Fix the license of Solar modeling and inference code.

Corrected the license of `configuration_solar_open.py` and `modeling_solar_open.py` to Apache 2.0, as they are derived from `transformers`.

README.md

@@ -18,7 +18,7 @@ tags:
 
 # **Solar Open**
 
-**Solar Open** is Upstage's flagship **102B-parameter** large language model, trained **entirely from scratch** and released under the **Solar-Apache License 2.0** (see [LICENSE](./LICENSE)). As a **Mixture-of-Experts (MoE)** architecture, it delivers enterprise-grade performance in reasoning, instruction-following, and agentic capabilities—all while prioritizing transparency and customization for the open-source community.
+**Solar Open** is Upstage's flagship **102B-parameter** large language model, trained **entirely from scratch** and released under the **Solar-Apache License 2.0** (see [LICENSE](#LICENSE) for details). As a **Mixture-of-Experts (MoE)** architecture, it delivers enterprise-grade performance in reasoning, instruction-following, and agentic capabilities—all while prioritizing transparency and customization for the open-source community.
 
 ## Highlights
 
@@ -40,6 +40,18 @@ tags:
 * **Hardware Requirements:**
     * **Minimum:** 4x NVIDIA A100 (80GB)
 
+## License
+This repository contains both model weights and code,
+which are licensed under different terms:
+
+1. MODEL WEIGHTS (*.safetensors)
+   Licensed under **Solar-Apache License 2.0**
+   See: https://huggingface.co/upstage/Solar-Open-100B/blob/main/LICENSE
+
+2. CODE (*.py, *.json, *.jinja files)
+   Licensed under **Apache License 2.0**
+   See: https://www.apache.org/licenses/LICENSE-2.0
+
 ## Performance
 
 TBA
@@ -77,7 +89,6 @@ model = AutoModelForCausalLM.from_pretrained(
     pretrained_model_name_or_path=MODEL_ID,
     torch_dtype=torch.bfloat16,
     device_map="auto",
-    trust_remote_code=True,
 )
 
 # Prepare input
@@ -99,6 +110,7 @@ generated_ids = model.generate(
     top_p=0.95,
     top_k=50,
     do_sample=True,
+    trust_remote_code=True,
 )
 generated_text = tokenizer.decode(generated_ids[0][inputs.input_ids.shape[1] :])
 print(generated_text)
@@ -168,7 +180,7 @@ If you use Solar Open in your research, please cite:
 
 ```bibtex
 @misc{solar-open-2025,
-    title={Solar Open 100B},
+    title={Solar Open: Scaling Upstage's LLM Capabilities with MoE},
     author={Upstage AI},
     year={2025},
     url={https://huggingface.co/Upstage/Solar-Open-100B}

configuration_solar_open.py

@@ -1,17 +1,24 @@
 # coding=utf-8
-# Copyright 2025 Upstage AI. All rights reserved.
+# Copyright 2025 Upstage AI.
+# Copyright 2025 The ZhipuAI Inc. team and HuggingFace Inc. team.
 #
-# Licensed under the Solar-Apache License, Version 2.0 (the "License");
+# Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-#     https://huggingface.co/upstage/Solar-Open-100B/blob/main/LICENSE
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+#
+# This file has been modified by Upstage AI including
+# -  Hyperparameter Adjustments: Modified the model architecture by increasing vocab_size and num_hidden_layers, while decreasing num_attention_heads, intermediate_size, and moe_intermediate_size.
+# RoPE Configuration: Replaced the generic rope_parameters argument with explicit rope_theta and rope_scaling parameters to define Rotary Positional Embeddings settings.
+#
+# Based on code from: https://github.com/huggingface/transformers/blob/main/src/transformers/models/glm4_moe/configuration_glm4_moe.py
 
 from transformers.configuration_utils import PretrainedConfig
 from transformers.modeling_rope_utils import rope_config_validation

modeling_solar_open.py

@@ -1,17 +1,25 @@
 # coding=utf-8
-# Copyright 2025 Upstage AI. All rights reserved.
+# Copyright 2025 Upstage AI.
+# Copyright 2025 The GLM4 & ZhipuAI team and HuggingFace Inc. team.
 #
-# Licensed under the Solar-Apache License, Version 2.0 (the "License");
+# Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-#     https://huggingface.co/upstage/Solar-Open-100B/blob/main/LICENSE
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+#
+# This file has been modified by Upstage AI including:
+# - Hybrid MoE Architecture: Replaced the standard dense structure with a depth-dependent Hybrid MoE, adding `SolarOpenMoE` and `SolarOpenTopkRouter` classes.
+# - RoPE Strategy: Changed the rotary position embedding strategy from GLM4's interleaved rotation to Llama-style block rotation (via modified `rotate_half`).
+# - Normalization Logic: Simplified the layer normalization structure by removing GLM4's extra post-operation norms and adding optional Query-Key Normalization (`use_qk_norm`).
+#
+# Based on code from: https://github.com/huggingface/transformers/blob/main/src/transformers/models/glm4/modeling_glm4.py
 
 from typing import Callable, Optional, Union
 

parallel_tool_call_logits_processor.py

@@ -1,11 +1,11 @@
 # coding=utf-8
-# Copyright 2025 Upstage AI. All rights reserved.
+# Copyright 2025 Upstage AI.
 #
-# Licensed under the Solar-Apache License, Version 2.0 (the "License");
+# Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-#     https://huggingface.co/upstage/Solar-Open-100B/blob/main/LICENSE
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,

solar_open_logits_processor.py

@@ -1,11 +1,11 @@
 # coding=utf-8
-# Copyright 2025 Upstage AI. All rights reserved.
+# Copyright 2025 Upstage AI.
 #
-# Licensed under the Solar-Apache License, Version 2.0 (the "License");
+# Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-#     https://huggingface.co/upstage/Solar-Open-100B/blob/main/LICENSE
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,

solar_open_reasoning_parser.py

@@ -1,11 +1,11 @@
 # coding=utf-8
-# Copyright 2025 Upstage AI. All rights reserved.
+# Copyright 2025 Upstage AI.
 #
-# Licensed under the Solar-Apache License, Version 2.0 (the "License");
+# Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-#     https://huggingface.co/upstage/Solar-Open-100B/blob/main/LICENSE
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,

solar_open_tool_parser.py

@@ -1,11 +1,11 @@
 # coding=utf-8
-# Copyright 2025 Upstage AI. All rights reserved.
+# Copyright 2025 Upstage AI.
 #
-# Licensed under the Solar-Apache License, Version 2.0 (the "License");
+# Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-#     https://huggingface.co/upstage/Solar-Open-100B/blob/main/LICENSE
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,