Publish portable Isaac-0.5 artifact (#1)

- feat: publish portable Isaac-0.5 artifact (ed7b4370659d8ef535fed5b1827c36bbd57f67c7)


Co-authored-by: Philipp G <philperceptron@users.noreply.huggingface.co>

.gitattributes

@@ -39,3 +39,6 @@ isaac_model_card_assets/perception-benchmarks.png filter=lfs diff=lfs merge=lfs
 isaac_model_card_assets/scaling-law-contours.png filter=lfs diff=lfs merge=lfs -text
 isaac_model_card_assets/training-data-plane.png filter=lfs diff=lfs merge=lfs -text
 isaac_model_card_assets/yam-simulation-tasks.png filter=lfs diff=lfs merge=lfs -text
+tokenizer.json filter=lfs diff=lfs merge=lfs -text
+policy_normalization.json filter=lfs diff=lfs merge=lfs -text
+policy_inference_recipe.json filter=lfs diff=lfs merge=lfs -text

.gitignore

@@ -0,0 +1,3 @@
+# Local runtime caches.
+__pycache__/
+.ruff_cache/

LICENSE

@@ -0,0 +1,202 @@
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README.md

@@ -1,6 +1,7 @@
 ---
 language:
 - en
+license: apache-2.0
 tags:
 - robotics
 - vision-language-model
@@ -8,8 +9,6 @@ tags:
 - embodied-ai
 ---
 
-<!-- Add the final license and pipeline_tag before publication. -->
-
 # Isaac 0.5 by Perceptron
 
 Introducing Isaac 0.5, our open foundation model for robot learning.
@@ -18,13 +17,30 @@ Isaac 0.5 brings multimodal video understanding, embodied reasoning, spatial gro
 
 To our knowledge, Isaac 0.5 is the first open model operating at the frontier of multimodal video understanding, embodied reasoning, and robot control.
 
-**[Read the paper](https://pub-d90b81cad7254a1aa6b148ac18153c0c.r2.dev/isaac-0.5.pdf) · [Download the weights (COMING SOON)](https://huggingface.co/PerceptronAI/Isaac-0.5) · [View the code](https://github.com/perceptron-ai-inc/isaac)**
+**[Read the paper](https://pub-d90b81cad7254a1aa6b148ac18153c0c.r2.dev/isaac-0.5.pdf) · [Download the weights](https://huggingface.co/PerceptronAI/Isaac-0.5) · [View the code](https://github.com/perceptron-ai-inc/isaac)**
+
+## Using this checkpoint
+
+This checkpoint is consumed through the [Perceptron Isaac repository](https://github.com/perceptron-ai-inc/isaac). Direct Transformers and stock LeRobot usage are not currently supported. It is compatible with [Perceptron Isaac commit `be6507b`](https://github.com/perceptron-ai-inc/isaac/commit/be6507b4aed7472f2029606c22684d4ebc9d73e6).
+
+```bash
+git clone https://github.com/perceptron-ai-inc/isaac.git
+cd isaac
+git checkout be6507b4aed7472f2029606c22684d4ebc9d73e6
+git submodule update --init --recursive
+git -C lerobot fetch origin main
+git -C lerobot checkout e12389c1f8f591ad05dced4e284d4e92e48c5df4
+cd lerobot
+uv sync --locked --extra perceptron_isaac
+```
+
+The pinned repository lockfile defines the supported runtime versions.
 
 ## Extending the frontier of open robot learning
 
 Isaac 0.5 is trained on more than 35 robot systems, 100,000 hours of robot experience, one million hours of general video, and three trillion multimodal tokens. Video understanding, spatial grounding, task progress, future-percept prediction, and robot action are co-trained from the beginning on one shared backbone.
 
-Teams can fine-tune Isaac as a robot policy or use its visual outputs inside a planner, controller, or data engine. The release includes base and action checkpoints, action-training and inference code, LeRobot integration, a reference policy server, evaluation tools, and the manifests needed to reproduce the model's data and checkpoint interfaces.
+Teams can fine-tune Isaac as a robot policy or use its visual outputs inside a planner, controller, or data engine. This model repository provides checkpoint weights and portable runtime manifests. The companion [Perceptron Isaac repository](https://github.com/perceptron-ai-inc/isaac) provides action-training and inference code, LeRobot integration, a reference policy server, evaluation tools, and reproduction guides.
 
 ## What's new in Isaac 0.5
 
@@ -33,7 +49,7 @@ Teams can fine-tune Isaac as a robot policy or use its visual outputs inside a p
 - **Unified perception, reasoning, and control:** One shared sparse backbone supports video understanding, pointing, tracking, task-state estimation, and robot action generation.
 - **Continuous and discrete action interfaces:** Isaac supports continuous control through a dedicated Flow expert and diffusion transformer, plus discrete control through a 2,048-token FAST action vocabulary.
 - **Real-time closed-loop control:** Isaac predicts the next action chunk while the current chunk is still executing, using the latest observation and previously issued commands.
-- **Open training and deployment stack:** The release includes model weights, training code, inference code, LeRobot integration, a reference policy server, evaluation code, and reproduction manifests.
+- **Open training and deployment stack:** This model repository publishes checkpoint weights and portable manifests; the companion [Perceptron Isaac repository](https://github.com/perceptron-ai-inc/isaac) provides training, inference, LeRobot integration, the reference policy server, and evaluation code.
 
 ## A scaling law for video and robot experience
 
@@ -101,23 +117,27 @@ We evaluate the same Isaac checkpoints across multimodal video understanding, sp
 
 Isaac 0.5 can be fine-tuned on new demonstrations, used as a visual backbone inside a larger embodied system, or deployed as an action policy through LeRobot or our reference server.
 
-The release includes:
+This model repository provides:
 
-- base and action-capable weights;
+- checkpoint weights;
 - continuous Flow and discrete FAST action configurations;
-- action training and fine-tuning code;
 - text, pointing, tracking, and task-state output schemas;
+- checkpoint, data, and model-I/O manifests;
+- the technical report and model card.
+
+The companion [Perceptron Isaac repository](https://github.com/perceptron-ai-inc/isaac) provides:
+
+- action training, fine-tuning, and inference code;
 - LeRobot integration and a reference policy server;
 - evaluation code, task definitions, and rollout manifests;
-- checkpoint, data, and model-I/O manifests;
-- the technical report, model card, and reproduction guide.
+- reproduction and deployment guides.
 
 ## Resources
 
-- **Weights (COMING SOON):** [Hugging Face](https://huggingface.co/PerceptronAI/Isaac-0.5)
+- **Weights:** [Hugging Face](https://huggingface.co/PerceptronAI/Isaac-0.5)
 - **Code:** [GitHub](https://github.com/perceptron-ai-inc/isaac)
 - **Technical report:** [Read the paper](https://pub-d90b81cad7254a1aa6b148ac18153c0c.r2.dev/isaac-0.5.pdf)
 
-Open models are essential to robotics progress. We are releasing Isaac 0.5 with its weights, code, interfaces, benchmarks, and manifests so others can inspect, reproduce, and extend the work.
+Open models are essential to robotics progress. The weights and portable manifests are published here; code, interfaces, evaluation tools, and deployment guides are maintained in the companion [Perceptron Isaac repository](https://github.com/perceptron-ai-inc/isaac).
 
 For help deploying Isaac on your infrastructure, contact [sales@perceptron.inc](mailto:sales@perceptron.inc).

chat_template.jinja

@@ -0,0 +1,154 @@
+{%- set image_count = namespace(value=0) %}
+{%- set video_count = namespace(value=0) %}
+{%- macro render_content(content, do_vision_count, is_system_content=false) %}
+    {%- if content is string %}
+        {{- content }}
+    {%- elif content is iterable and content is not mapping %}
+        {%- for item in content %}
+            {%- if 'image' in item or 'image_url' in item or item.type == 'image' %}
+                {%- if is_system_content %}
+                    {{- raise_exception('System message cannot contain images.') }}
+                {%- endif %}
+                {%- if do_vision_count %}
+                    {%- set image_count.value = image_count.value + 1 %}
+                {%- endif %}
+                {%- if add_vision_id %}
+                    {{- 'Picture ' ~ image_count.value ~ ': ' }}
+                {%- endif %}
+                {{- '<|vision_start|><|image_pad|><|vision_end|>' }}
+            {%- elif 'video' in item or item.type == 'video' %}
+                {%- if is_system_content %}
+                    {{- raise_exception('System message cannot contain videos.') }}
+                {%- endif %}
+                {%- if do_vision_count %}
+                    {%- set video_count.value = video_count.value + 1 %}
+                {%- endif %}
+                {%- if add_vision_id %}
+                    {{- 'Video ' ~ video_count.value ~ ': ' }}
+                {%- endif %}
+                {{- '<|vision_start|><|video_pad|><|vision_end|>' }}
+            {%- elif 'text' in item %}
+                {{- item.text }}
+            {%- else %}
+                {{- raise_exception('Unexpected item type in content.') }}
+            {%- endif %}
+        {%- endfor %}
+    {%- elif content is none or content is undefined %}
+        {{- '' }}
+    {%- else %}
+        {{- raise_exception('Unexpected content type.') }}
+    {%- endif %}
+{%- endmacro %}
+{%- if not messages %}
+    {{- raise_exception('No messages provided.') }}
+{%- endif %}
+{%- if tools and tools is iterable and tools is not mapping %}
+    {{- '<|im_start|>system\n' }}
+    {{- "# Tools\n\nYou have access to the following functions:\n\n<tools>" }}
+    {%- for tool in tools %}
+        {{- "\n" }}
+        {{- tool | tojson }}
+    {%- endfor %}
+    {{- "\n</tools>" }}
+    {{- '\n\nIf you choose to call a function ONLY reply in the following format with NO suffix:\n\n<tool_call>\n<function=example_function_name>\n<parameter=example_parameter_1>\nvalue_1\n</parameter>\n<parameter=example_parameter_2>\nThis is the value for the second parameter\nthat can span\nmultiple lines\n</parameter>\n</function>\n</tool_call>\n\n<IMPORTANT>\nReminder:\n- Function calls MUST follow the specified format: an inner <function=...></function> block must be nested within <tool_call></tool_call> XML tags\n- Required parameters MUST be specified\n- You may provide optional reasoning for your function call in natural language BEFORE the function call, but NOT after\n- If there is no function call available, answer the question like normal with your current knowledge and do not tell the user about function calls\n</IMPORTANT>' }}
+    {%- if messages[0].role == 'system' %}
+        {%- set content = render_content(messages[0].content, false, true)|trim %}
+        {%- if content %}
+            {{- '\n\n' + content }}
+        {%- endif %}
+    {%- endif %}
+    {{- '<|im_end|>\n' }}
+{%- else %}
+    {%- if messages[0].role == 'system' %}
+        {%- set content = render_content(messages[0].content, false, true)|trim %}
+        {{- '<|im_start|>system\n' + content + '<|im_end|>\n' }}
+    {%- endif %}
+{%- endif %}
+{%- set ns = namespace(multi_step_tool=true, last_query_index=messages|length - 1) %}
+{%- for message in messages[::-1] %}
+    {%- set index = (messages|length - 1) - loop.index0 %}
+    {%- if ns.multi_step_tool and message.role == "user" %}
+        {%- set content = render_content(message.content, false)|trim %}
+        {%- if not(content.startswith('<tool_response>') and content.endswith('</tool_response>')) %}
+            {%- set ns.multi_step_tool = false %}
+            {%- set ns.last_query_index = index %}
+        {%- endif %}
+    {%- endif %}
+{%- endfor %}
+{%- if ns.multi_step_tool %}
+    {{- raise_exception('No user query found in messages.') }}
+{%- endif %}
+{%- for message in messages %}
+    {%- set content = render_content(message.content, true)|trim %}
+    {%- if message.role == "system" %}
+        {%- if not loop.first %}
+            {{- raise_exception('System message must be at the beginning.') }}
+        {%- endif %}
+    {%- elif message.role == "user" %}
+        {{- '<|im_start|>' + message.role + '\n' + content + '<|im_end|>' + '\n' }}
+    {%- elif message.role == "assistant" %}
+        {%- set reasoning_content = '' %}
+        {%- if message.reasoning_content is string %}
+            {%- set reasoning_content = message.reasoning_content %}
+        {%- else %}
+            {%- if '</think>' in content %}
+                {%- set reasoning_content = content.split('</think>')[0].rstrip('\n').split('<think>')[-1].lstrip('\n') %}
+                {%- set content = content.split('</think>')[-1].lstrip('\n') %}
+            {%- endif %}
+        {%- endif %}
+        {%- set reasoning_content = reasoning_content|trim %}
+        {%- if (preserve_thinking is defined and preserve_thinking is true) or (loop.index0 > ns.last_query_index) %}
+            {{- '<|im_start|>' + message.role + '\n<think>\n' + reasoning_content + '\n</think>\n\n' + content }}
+        {%- else %}
+            {{- '<|im_start|>' + message.role + '\n' + content }}
+        {%- endif %}
+        {%- if message.tool_calls and message.tool_calls is iterable and message.tool_calls is not mapping %}
+            {%- for tool_call in message.tool_calls %}
+                {%- if tool_call.function is defined %}
+                    {%- set tool_call = tool_call.function %}
+                {%- endif %}
+                {%- if loop.first %}
+                    {%- if content|trim %}
+                        {{- '\n\n<tool_call>\n<function=' + tool_call.name + '>\n' }}
+                    {%- else %}
+                        {{- '<tool_call>\n<function=' + tool_call.name + '>\n' }}
+                    {%- endif %}
+                {%- else %}
+                    {{- '\n<tool_call>\n<function=' + tool_call.name + '>\n' }}
+                {%- endif %}
+                {%- if tool_call.arguments is defined %}
+                    {%- for args_name, args_value in tool_call.arguments|items %}
+                        {{- '<parameter=' + args_name + '>\n' }}
+                        {%- set args_value = args_value | string if args_value is string else args_value | tojson | safe %}
+                        {{- args_value }}
+                        {{- '\n</parameter>\n' }}
+                    {%- endfor %}
+                {%- endif %}
+                {{- '</function>\n</tool_call>' }}
+            {%- endfor %}
+        {%- endif %}
+        {{- '<|im_end|>\n' }}
+    {%- elif message.role == "tool" %}
+        {%- if loop.previtem and loop.previtem.role != "tool" %}
+            {{- '<|im_start|>user' }}
+        {%- endif %}
+        {{- '\n<tool_response>\n' }}
+        {{- content }}
+        {{- '\n</tool_response>' }}
+        {%- if not loop.last and loop.nextitem.role != "tool" %}
+            {{- '<|im_end|>\n' }}
+        {%- elif loop.last %}
+            {{- '<|im_end|>\n' }}
+        {%- endif %}
+    {%- else %}
+        {{- raise_exception('Unexpected message role.') }}
+    {%- endif %}
+{%- endfor %}
+{%- if add_generation_prompt %}
+    {{- '<|im_start|>assistant\n' }}
+    {%- if enable_thinking is defined and enable_thinking is false %}
+        {{- '<think>\n\n</think>\n\n' }}
+    {%- else %}
+        {{- '<think>\n' }}
+    {%- endif %}
+{%- endif %}

config.json

@@ -0,0 +1,313 @@
+{
+  "_name_or_path": "",
+  "action_expert": {
+    "action_dim": 64,
+    "action_horizon": 64,
+    "causal_attn": false,
+    "context_layer_norm": true,
+    "drop_action_dim_overflow": false,
+    "ffn_multiple_of": 256,
+    "hidden_dim": 768,
+    "k_batched_cross_attn": true,
+    "k_batched_cross_attn_backend": "flash_gqa",
+    "mask_padded_action_rows": true,
+    "mlp_ratio": 4.0,
+    "num_heads": 8,
+    "num_inference_steps": 10,
+    "num_layers": 36,
+    "qk_norm": true,
+    "qk_norm_eps": 1e-06,
+    "rope": true,
+    "rtc_delay_sampling": "poisson",
+    "rtc_max_delay_steps": 12,
+    "rtc_poisson_mean": 5.0,
+    "rtc_probability": 0.5,
+    "schema_version": 1,
+    "timestep_embed_dim": 256,
+    "timestep_sampling_alpha": 1.5,
+    "timestep_sampling_beta": 1.0,
+    "timestep_sampling_offset": 0.001,
+    "timestep_sampling_scale": 0.999,
+    "train_samples_per_chunk": 8,
+    "type": "dit"
+  },
+  "architectures": [
+    "Isaac05ForConditionalGeneration"
+  ],
+  "auto_map": {
+    "AutoConfig": "configuration_isaac05.Isaac05Config",
+    "AutoModelForCausalLM": "modeling_isaac05.Isaac05ForConditionalGeneration",
+    "AutoProcessor": "processing_isaac05.Isaac05Processor"
+  },
+  "chunk_size_feed_forward": 0,
+  "dtype": "bfloat16",
+  "id2label": {
+    "0": "LABEL_0",
+    "1": "LABEL_1"
+  },
+  "image_token_id": 248056,
+  "is_encoder_decoder": false,
+  "isaac05_artifact": {
+    "artifact_kind": "trained_policy",
+    "schema_version": 1,
+    "tensor_bytes": 142894027456,
+    "tensor_count": 1616
+  },
+  "isaac05_coord_tokens": {
+    "enabled": true,
+    "offset": 248320,
+    "size": 1001
+  },
+  "isaac05_fast_tokens": {
+    "enabled": true,
+    "offset": 249321,
+    "size": 2048,
+    "tokenizer": "physical-intelligence/fast"
+  },
+  "isaac05_moe": {
+    "logical_router_outputs": 512,
+    "num_null_experts": 256,
+    "num_real_experts": 256,
+    "physical_router_outputs": 257,
+    "route_norm": true,
+    "route_scale": 1.0,
+    "router_contract": [
+      256,
+      256
+    ],
+    "router_contract_version": 1,
+    "score_before_experts": false,
+    "score_func": "softmax",
+    "shared_null_router_row": true,
+    "top_k": 8,
+    "uses_expert_bias": false
+  },
+  "isaac05_test_only_reduced_geometry": false,
+  "isaac05_vla": {
+    "action_expert": {
+      "action_dim": 64,
+      "action_horizon": 64,
+      "causal_attn": false,
+      "context_layer_norm": true,
+      "drop_action_dim_overflow": false,
+      "ffn_multiple_of": 256,
+      "hidden_dim": 768,
+      "k_batched_cross_attn": true,
+      "k_batched_cross_attn_backend": "flash_gqa",
+      "mask_padded_action_rows": true,
+      "mlp_ratio": 4.0,
+      "num_heads": 8,
+      "num_inference_steps": 10,
+      "num_layers": 36,
+      "qk_norm": true,
+      "qk_norm_eps": 1e-06,
+      "rope": true,
+      "rtc_delay_sampling": "poisson",
+      "rtc_max_delay_steps": 12,
+      "rtc_poisson_mean": 5.0,
+      "rtc_probability": 0.5,
+      "schema_version": 1,
+      "timestep_embed_dim": 256,
+      "timestep_sampling_alpha": 1.5,
+      "timestep_sampling_beta": 1.0,
+      "timestep_sampling_offset": 0.001,
+      "timestep_sampling_scale": 0.999,
+      "train_samples_per_chunk": 8,
+      "type": "dit"
+    },
+    "mtp": {
+      "action_runtime": "exclude",
+      "physical_layers": 0,
+      "present": false,
+      "rollout_steps": 0
+    },
+    "rmsnorm_weight_convention": "zero_centered_1_plus_weight",
+    "schema_version": 1,
+    "state_dict_schema": "pr3154_v1",
+    "vector_encoder": {
+      "bias": false,
+      "hidden_dim": 2048,
+      "max_states": 128,
+      "output_dim": 2048,
+      "type": "linear_silu_linear"
+    }
+  },
+  "label2id": {
+    "LABEL_0": 0,
+    "LABEL_1": 1
+  },
+  "max_sequence_length": 262144,
+  "model_type": "isaac_0_5",
+  "output_attentions": false,
+  "output_hidden_states": false,
+  "problem_type": null,
+  "return_dict": true,
+  "runtime_dtype": "bfloat16",
+  "storage_dtype": "float32",
+  "text_config": {
+    "_name_or_path": "",
+    "architectures": null,
+    "attention_bias": false,
+    "attention_dropout": 0.0,
+    "attn_output_gate": true,
+    "bos_token_id": 248044,
+    "chunk_size_feed_forward": 0,
+    "dtype": "bfloat16",
+    "eos_token_id": 248044,
+    "full_attention_interval": 4,
+    "head_dim": 256,
+    "hidden_act": "silu",
+    "hidden_size": 2048,
+    "id2label": {
+      "0": "LABEL_0",
+      "1": "LABEL_1"
+    },
+    "initializer_range": 0.02,
+    "is_encoder_decoder": false,
+    "isaac05_moe": {
+      "logical_router_outputs": 512,
+      "num_null_experts": 256,
+      "num_real_experts": 256,
+      "physical_router_outputs": 257,
+      "route_norm": true,
+      "route_scale": 1.0,
+      "router_contract": [
+        256,
+        256
+      ],
+      "router_contract_version": 1,
+      "score_before_experts": false,
+      "score_func": "softmax",
+      "shared_null_router_row": true,
+      "top_k": 8,
+      "uses_expert_bias": false
+    },
+    "label2id": {
+      "LABEL_0": 0,
+      "LABEL_1": 1
+    },
+    "layer_types": [
+      "linear_attention",
+      "linear_attention",
+      "linear_attention",
+      "full_attention",
+      "linear_attention",
+      "linear_attention",
+      "linear_attention",
+      "full_attention",
+      "linear_attention",
+      "linear_attention",
+      "linear_attention",
+      "full_attention",
+      "linear_attention",
+      "linear_attention",
+      "linear_attention",
+      "full_attention",
+      "linear_attention",
+      "linear_attention",
+      "linear_attention",
+      "full_attention",
+      "linear_attention",
+      "linear_attention",
+      "linear_attention",
+      "full_attention",
+      "linear_attention",
+      "linear_attention",
+      "linear_attention",
+      "full_attention",
+      "linear_attention",
+      "linear_attention",
+      "linear_attention",
+      "full_attention",
+      "linear_attention",
+      "linear_attention",
+      "linear_attention",
+      "full_attention",
+      "linear_attention",
+      "linear_attention",
+      "linear_attention",
+      "full_attention"
+    ],
+    "linear_conv_kernel_dim": 4,
+    "linear_key_head_dim": 128,
+    "linear_num_key_heads": 16,
+    "linear_num_value_heads": 32,
+    "linear_value_head_dim": 128,
+    "mamba_ssm_dtype": "float32",
+    "max_position_embeddings": 262144,
+    "model_type": "qwen3_5_moe_text",
+    "moe_intermediate_size": 512,
+    "mtp_num_hidden_layers": 0,
+    "mtp_use_dedicated_embeddings": false,
+    "num_attention_heads": 16,
+    "num_experts": 256,
+    "num_experts_per_tok": 8,
+    "num_hidden_layers": 40,
+    "num_key_value_heads": 2,
+    "output_attentions": false,
+    "output_hidden_states": false,
+    "output_router_logits": false,
+    "pad_token_id": null,
+    "partial_rotary_factor": 0.25,
+    "problem_type": null,
+    "return_dict": true,
+    "rms_norm_eps": 1e-06,
+    "rope_parameters": {
+      "mrope_interleaved": true,
+      "mrope_section": [
+        11,
+        11,
+        10
+      ],
+      "partial_rotary_factor": 0.25,
+      "rope_theta": 10000000,
+      "rope_type": "default"
+    },
+    "router_aux_loss_coef": 0.001,
+    "shared_expert_intermediate_size": 512,
+    "tie_word_embeddings": false,
+    "use_cache": true,
+    "vocab_size": 256279
+  },
+  "tie_word_embeddings": false,
+  "transformers_version": "5.5.4",
+  "vector_max_states": 128,
+  "video_token_id": 248057,
+  "vision_config": {
+    "_name_or_path": "",
+    "architectures": null,
+    "chunk_size_feed_forward": 0,
+    "deepstack_visual_indexes": [],
+    "depth": 27,
+    "dtype": null,
+    "hidden_act": "gelu_pytorch_tanh",
+    "hidden_size": 1152,
+    "id2label": {
+      "0": "LABEL_0",
+      "1": "LABEL_1"
+    },
+    "in_channels": 3,
+    "initializer_range": 0.02,
+    "intermediate_size": 4304,
+    "is_encoder_decoder": false,
+    "label2id": {
+      "LABEL_0": 0,
+      "LABEL_1": 1
+    },
+    "model_type": "qwen3_5_moe",
+    "num_heads": 16,
+    "num_position_embeddings": 2304,
+    "out_hidden_size": 2048,
+    "output_attentions": false,
+    "output_hidden_states": false,
+    "patch_size": 16,
+    "problem_type": null,
+    "return_dict": true,
+    "spatial_merge_size": 2,
+    "temporal_patch_size": 2
+  },
+  "vision_end_token_id": 248054,
+  "vision_rescale_factor": 0.00392156862745098,
+  "vision_start_token_id": 248053,
+  "vision_token": "<|image_pad|>"
+}

configuration_isaac05.py

@@ -0,0 +1,188 @@
+"""Transformers configuration for the portable Isaac-0.5 VLA repository."""
+
+from __future__ import annotations
+
+import copy
+from collections.abc import Mapping
+from typing import Any
+
+from transformers import Qwen3_5MoeConfig
+
+_ISAAC05_ARCHITECTURES = ["Isaac05ForConditionalGeneration"]
+_ISAAC05_AUTO_MAP = {
+    "AutoConfig": "configuration_isaac05.Isaac05Config",
+    "AutoModelForCausalLM": "modeling_isaac05.Isaac05ForConditionalGeneration",
+    "AutoProcessor": "processing_isaac05.Isaac05Processor",
+}
+_PRODUCTION_COORD_TOKENS = {"enabled": True, "offset": 248_320, "size": 1_001}
+_PRODUCTION_FAST_TOKENS = {
+    "enabled": True,
+    "tokenizer": "physical-intelligence/fast",
+    "offset": 249_321,
+    "size": 2_048,
+}
+_PRODUCTION_ARTIFACT = {
+    "schema_version": 1,
+    "artifact_kind": "trained_policy",
+    "tensor_count": 1_616,
+    "tensor_bytes": 142_894_027_456,
+}
+_PRODUCTION_VECTOR_ENCODER = {
+    "type": "linear_silu_linear",
+    "max_states": 128,
+    "hidden_dim": 2_048,
+    "output_dim": 2_048,
+    "bias": False,
+}
+_PRODUCTION_ACTION_EXPERT = {
+    "action_dim": 64,
+    "action_horizon": 64,
+    "num_layers": 36,
+    "hidden_dim": 768,
+    "num_heads": 8,
+    "mlp_ratio": 4.0,
+    "num_inference_steps": 10,
+    "timestep_sampling_alpha": 1.5,
+    "timestep_sampling_beta": 1.0,
+    "timestep_sampling_scale": 0.999,
+    "timestep_sampling_offset": 0.001,
+    "train_samples_per_chunk": 8,
+    "timestep_embed_dim": 256,
+    "rtc_max_delay_steps": 12,
+    "rtc_probability": 0.5,
+    "rtc_delay_sampling": "poisson",
+    "rtc_poisson_mean": 5.0,
+    "mask_padded_action_rows": True,
+    "drop_action_dim_overflow": False,
+    "ffn_multiple_of": 256,
+    "qk_norm": True,
+    "qk_norm_eps": 1e-6,
+    "rope": True,
+    "context_layer_norm": True,
+    "causal_attn": False,
+    "k_batched_cross_attn": True,
+    "k_batched_cross_attn_backend": "flash_gqa",
+    "schema_version": 1,
+    "type": "dit",
+}
+_PRODUCTION_MTP = {
+    "present": False,
+    "physical_layers": 0,
+    "rollout_steps": 0,
+    "action_runtime": "exclude",
+}
+
+
+def _copy_mapping(value: Mapping[str, Any] | None, *, name: str) -> dict[str, Any]:
+    if not isinstance(value, Mapping):
+        raise ValueError(f"Isaac05Config {name} must be a JSON object.")
+    return copy.deepcopy(dict(value))
+
+
+def _require_exact(value: Mapping[str, Any], expected: Mapping[str, Any], *, name: str) -> None:
+    if dict(value) != dict(expected):
+        raise ValueError(f"Isaac05Config {name} does not match the portable artifact contract.")
+
+
+def _reserved_token_range(value: Mapping[str, Any], *, name: str) -> range:
+    if value.get("enabled") is not True:
+        raise ValueError(f"Isaac05Config {name}.enabled must be true.")
+    offset = value.get("offset")
+    size = value.get("size")
+    if not isinstance(offset, int) or isinstance(offset, bool) or offset < 0:
+        raise ValueError(f"Isaac05Config {name}.offset must be a non-negative integer.")
+    if not isinstance(size, int) or isinstance(size, bool) or size <= 0:
+        raise ValueError(f"Isaac05Config {name}.size must be a positive integer.")
+    return range(offset, offset + size)
+
+
+class Isaac05Config(Qwen3_5MoeConfig):
+    """Portable Isaac-0.5 configuration for the published checkpoint."""
+
+    model_type = "isaac_0_5"
+    has_no_defaults_at_init = True
+
+    def __init__(
+        self,
+        *,
+        isaac05_artifact: Mapping[str, Any] | None = None,
+        isaac05_coord_tokens: Mapping[str, Any] | None = None,
+        isaac05_fast_tokens: Mapping[str, Any] | None = None,
+        isaac05_vla: Mapping[str, Any] | None = None,
+        storage_dtype: str = "float32",
+        runtime_dtype: str = "bfloat16",
+        max_sequence_length: int = 262_144,
+        vision_token: str = "<|image_pad|>",
+        vision_rescale_factor: float = 1 / 255,
+        isaac05_test_only_reduced_geometry: bool = False,
+        **kwargs: Any,
+    ) -> None:
+        architectures = kwargs.pop("architectures", _ISAAC05_ARCHITECTURES)
+        auto_map = kwargs.pop("auto_map", _ISAAC05_AUTO_MAP)
+        if architectures != _ISAAC05_ARCHITECTURES:
+            raise ValueError(f"Isaac05Config architectures must be {_ISAAC05_ARCHITECTURES!r}.")
+        if auto_map != _ISAAC05_AUTO_MAP:
+            raise ValueError("Isaac05Config auto_map does not match the portable repository API.")
+
+        artifact = _copy_mapping(isaac05_artifact, name="isaac05_artifact")
+        coord_tokens = _copy_mapping(isaac05_coord_tokens, name="isaac05_coord_tokens")
+        fast_tokens = _copy_mapping(isaac05_fast_tokens, name="isaac05_fast_tokens")
+        vla = _copy_mapping(isaac05_vla, name="isaac05_vla")
+
+        if storage_dtype != "float32":
+            raise ValueError("Isaac05Config storage_dtype must be 'float32'.")
+        if runtime_dtype != "bfloat16":
+            raise ValueError("Isaac05Config runtime_dtype must be 'bfloat16'.")
+        if max_sequence_length <= 0:
+            raise ValueError("Isaac05Config max_sequence_length must be positive.")
+        if not vision_token:
+            raise ValueError("Isaac05Config vision_token must not be empty.")
+        if vision_rescale_factor <= 0:
+            raise ValueError("Isaac05Config vision_rescale_factor must be positive.")
+        coord_range = _reserved_token_range(coord_tokens, name="isaac05_coord_tokens")
+        fast_range = _reserved_token_range(fast_tokens, name="isaac05_fast_tokens")
+        if coord_range.start < fast_range.stop and fast_range.start < coord_range.stop:
+            raise ValueError("Isaac05Config reserved token ranges overlap.")
+        if not isaac05_test_only_reduced_geometry:
+            _require_exact(artifact, _PRODUCTION_ARTIFACT, name="isaac05_artifact")
+            _require_exact(coord_tokens, _PRODUCTION_COORD_TOKENS, name="isaac05_coord_tokens")
+            _require_exact(fast_tokens, _PRODUCTION_FAST_TOKENS, name="isaac05_fast_tokens")
+            _require_exact(
+                _copy_mapping(vla.get("vector_encoder"), name="isaac05_vla.vector_encoder"),
+                _PRODUCTION_VECTOR_ENCODER,
+                name="isaac05_vla.vector_encoder",
+            )
+            _require_exact(
+                _copy_mapping(vla.get("action_expert"), name="isaac05_vla.action_expert"),
+                _PRODUCTION_ACTION_EXPERT,
+                name="isaac05_vla.action_expert",
+            )
+        _require_exact(
+            _copy_mapping(vla.get("mtp"), name="isaac05_vla.mtp"),
+            _PRODUCTION_MTP,
+            name="isaac05_vla.mtp",
+        )
+        if vla.get("schema_version") != 1:
+            raise ValueError("Isaac05Config isaac05_vla.schema_version must be 1.")
+        if vla.get("state_dict_schema") != "pr3154_v1":
+            raise ValueError("Isaac05Config isaac05_vla.state_dict_schema must be 'pr3154_v1'.")
+        if vla.get("rmsnorm_weight_convention") != "zero_centered_1_plus_weight":
+            raise ValueError(
+                "Isaac05Config isaac05_vla.rmsnorm_weight_convention must be 'zero_centered_1_plus_weight'."
+            )
+
+        super().__init__(architectures=architectures, auto_map=auto_map, **kwargs)
+        self.isaac05_artifact = artifact
+        self.isaac05_coord_tokens = coord_tokens
+        self.isaac05_fast_tokens = fast_tokens
+        self.isaac05_vla = vla
+        vector_encoder = _copy_mapping(vla.get("vector_encoder"), name="isaac05_vla.vector_encoder")
+        action_expert = _copy_mapping(vla.get("action_expert"), name="isaac05_vla.action_expert")
+        self.vector_max_states = int(vector_encoder["max_states"])
+        self.action_expert = action_expert
+        self.storage_dtype = storage_dtype
+        self.runtime_dtype = runtime_dtype
+        self.max_sequence_length = int(max_sequence_length)
+        self.vision_token = vision_token
+        self.vision_rescale_factor = float(vision_rescale_factor)
+        self.isaac05_test_only_reduced_geometry = bool(isaac05_test_only_reduced_geometry)

fast_processor_pinned/processing_action_tokenizer.py

@@ -0,0 +1,158 @@
+import logging
+from typing import ClassVar
+
+import numpy as np
+from scipy.fft import dct
+from scipy.fft import idct
+from tokenizers import ByteLevelBPETokenizer
+from tokenizers.trainers import BpeTrainer
+from transformers import PreTrainedTokenizerFast
+from transformers.processing_utils import ProcessorMixin
+
+
+class UniversalActionProcessor(ProcessorMixin):
+    attributes: ClassVar[list[str]] = ["bpe_tokenizer"]
+    bpe_tokenizer_class: str = "AutoTokenizer"
+
+    def __init__(
+        self,
+        bpe_tokenizer: PreTrainedTokenizerFast,
+        scale: float = 10,
+        vocab_size: int = 1024,
+        min_token: int = 0,
+        *,
+        action_dim: int | None = None,
+        time_horizon: int | None = None,
+    ):
+        self.scale = scale
+        self.vocab_size = vocab_size
+        self.min_token = min_token
+
+        # Action horizon and dimension needed during decoding. These can be specified
+        # in three ways (in order of priority):
+        # 1. passed in as kwargs to decode()
+        # 2. in the constructor
+        # 3. cached from the last time decode() was called
+        self.time_horizon = time_horizon
+        self.action_dim = action_dim
+        self.called_time_horizon = time_horizon
+        self.called_action_dim = action_dim
+
+        super().__init__(bpe_tokenizer)
+
+    def __call__(self, action_chunk: np.array) -> np.array:
+        assert action_chunk.ndim <= 3, "Only 3 dimensions supported: [batch, timesteps, action_dim]"
+        if action_chunk.ndim == 2:
+            action_chunk = action_chunk[None, ...]
+
+        # Cache the time horizon and action dimension for decoding
+        self.called_time_horizon = action_chunk.shape[-2]
+        self.called_action_dim = action_chunk.shape[-1]
+
+        dct_coeff = dct(action_chunk, axis=1, norm="ortho")
+        dct_coeff = np.around(dct_coeff * self.scale)
+        tokens = []
+        for elem in dct_coeff:
+            token_str = "".join(map(chr, np.maximum(elem.flatten() - self.min_token, 0).astype(int)))
+            tokens.append(self.bpe_tokenizer(token_str)["input_ids"])
+        return tokens
+
+    def decode(
+        self,
+        tokens: list[list[int]],
+        *,
+        time_horizon: int | None = None,
+        action_dim: int | None = None,
+    ) -> np.array:
+        self.time_horizon = time_horizon or self.time_horizon or self.called_time_horizon
+        self.action_dim = action_dim or self.action_dim or self.called_action_dim
+
+        # Cache the time horizon and action dimension for the next call
+        self.called_time_horizon = self.time_horizon
+        self.called_action_dim = self.action_dim
+
+        assert (
+            self.time_horizon is not None and self.action_dim is not None
+        ), "Tokenizer not initialized, call encode() once or pass in time_horizon and action_dim."
+
+        decoded_actions = []
+        for token in tokens:
+            try:
+                decoded_tokens = self.bpe_tokenizer.decode(token)
+                decoded_dct_coeff = np.array(list(map(ord, decoded_tokens))) + self.min_token
+                decoded_dct_coeff = decoded_dct_coeff.reshape(-1, self.action_dim)
+                assert (
+                    decoded_dct_coeff.shape
+                    == (
+                        self.time_horizon,
+                        self.action_dim,
+                    )
+                ), f"Decoded DCT coefficients have shape {decoded_dct_coeff.shape}, expected ({self.time_horizon}, {self.action_dim})"
+            except Exception as e:
+                print(f"Error decoding tokens: {e}")
+                print(f"Tokens: {token}")
+                decoded_dct_coeff = np.zeros((self.time_horizon, self.action_dim))
+            decoded_actions.append(idct(decoded_dct_coeff / self.scale, axis=0, norm="ortho"))
+        return np.stack(decoded_actions)
+
+    @classmethod
+    def fit(
+        cls,
+        action_data: list[np.array],
+        scale: float = 10,
+        vocab_size: int = 1024,
+        *,
+        time_horizon: int | None = None,
+        action_dim: int | None = None,
+    ) -> "UniversalActionProcessor":
+        # Run DCT over all inputs
+        dct_tokens = [dct(a, axis=0, norm="ortho").flatten() for a in action_data]
+
+        # Quantize and find min token
+        max_token = int(np.around(np.concatenate(dct_tokens) * scale).max())
+        min_token = int(np.around(np.concatenate(dct_tokens) * scale).min())
+        min_vocab_size = max_token - min_token
+
+        assert (
+            min_vocab_size <= vocab_size
+        ), f"Vocab size {vocab_size} is too small for the range of tokens {min_vocab_size}"
+        if min_vocab_size + 100 > vocab_size:
+            logging.warning(
+                f"Initial alphabet size {min_vocab_size} is almost as large as the vocab"
+                f"size {vocab_size}, consider increasing vocab size"
+            )
+
+        # Make token iterator for BPE training
+        def _token_iter():
+            for tokens in dct_tokens:
+                rounded_tokens = np.around(tokens * scale) - min_token
+                rounded_tokens = rounded_tokens.astype(int)
+                string = "".join(map(chr, rounded_tokens))
+                yield string
+
+        # Train BPE tokenizer
+        bpe = ByteLevelBPETokenizer()
+
+        # Set up the entire range of possible tokens as the initial alphabet
+        alphabet = [chr(i) for i in range(max_token - min_token + 1)]
+        trainer = BpeTrainer(
+            vocab_size=vocab_size,
+            min_frequency=2,
+            show_progress=True,
+            special_tokens=[],
+            initial_alphabet=alphabet,
+            max_token_length=10000,
+        )
+
+        # Train the inner tokenizer (don't use ByteLevelBPETokenizer.train_from_iterator()
+        # because it doesn't support custom alphabets)
+        bpe._tokenizer.train_from_iterator(_token_iter(), trainer=trainer)
+
+        return cls(
+            PreTrainedTokenizerFast(tokenizer_object=bpe, clean_up_tokenization_spaces=False),
+            scale=scale,
+            vocab_size=vocab_size,
+            min_token=min_token,
+            time_horizon=time_horizon,
+            action_dim=action_dim,
+        )

fast_processor_pinned/processor_config.json

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+  "processor_class": "UniversalActionProcessor",
+  "scale": 10,
+  "time_horizon": null,
+  "vocab_size": 2048
+}

fast_processor_pinned/special_tokens_map.json

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fast_processor_pinned/tokenizer.json

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+oid sha256:6507dd709287fd018882120c0071787f1f62bad9f180f1e8c5235bda1b71fa78
+size 686974

fast_processor_pinned/tokenizer_config.json

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+  "model_max_length": 1000000000000000019884624838656,
+  "processor_class": "UniversalActionProcessor",
+  "tokenizer_class": "PreTrainedTokenizerFast"
+}

isaac_deployment_adapter.json

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+{
+  "schema": "perceptron_isaac_deployment_adapter_v1",
+  "contract_sha256": {
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+    "policy_inference_recipe.json": "85e5f52d50a3c89b6ff3adc594189bde3e1d345fbecc7bda082561308b3ee905"
+  },
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+  "normalization_scope": "libero_spatial",
+  "objective": "Flow",
+  "render_dataset_name": "libero",
+  "robot_type": "libero",
+  "control_mode": "ee",
+  "image_size": [
+    256,
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+  "camera_views": [
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+  "adapter_validation_status": "reviewed_offline",
+  "provenance": {
+    "checkpoint": "PerceptronAI/Isaac-0.5",
+    "purpose": "LIBERO Spatial Flow reference deployment profile",
+    "profile_source": "LeRobot tested LIBERO deployment profile",
+    "selected_by": "user"
+  }
+}

isaac_stats.json

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+  "stats_sha256": "b2676fdb56b148f49f21fb7633769a2d2e152a7c4cd63e05884232274748ead0",
+  "target_fps": 20.0,
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+}

lerobot_policy/config.json

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+{
+    "type": "perceptron_isaac",
+    "n_obs_steps": 3,
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+    "hf_model_path": "..",
+    "artifact_kind": "trained_policy",
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+    "action_conditioning": false,
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+    "dtype": "bfloat16",
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+        "ACTION": "IDENTITY"
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+}

lerobot_policy/isaac_deployment_adapter.json

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+  "robot_type": "libero",
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+  "camera_order": [
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+    "purpose": "LIBERO Spatial Flow reference deployment profile",
+    "profile_source": "LeRobot tested LIBERO deployment profile",
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+}

lerobot_policy/isaac_stats.json

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lerobot_policy/policy_postprocessor.json

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lerobot_policy/policy_preprocessor.json

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