How to use from
vLLM
Install from pip and serve model
# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "stealth-model/missingno"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "stealth-model/missingno",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'
Use Docker
docker model run hf.co/stealth-model/missingno:IQ2_XXS
Quick Links

MISSINGNO., the purple mystery jelly in a fake moustache, at a Nous Portal checkpoint.

Our token counts matched MISSINGNO. to the tokenizer family behind Beam on all 24 phrases, five days before Reflection named it.

By Stealth Models.

StealthMark results for the released Beam 1.0:

StealthMark 1.8.8 results for the released Beam 1.0: benchmark score 31.9 out of 100, General Intelligence 30.9, Visual Intelligence 33.8. Beam, the model behind MISSINGNO., is strongest at composing a whole scene: 52.4 on Beach.

Every StealthMark result of the released Beam 1.0: Beach 52.4, Foresight 49.4, Raccoon 46.3, Selfie 45.4, Latch 37.3, Ground Truth 27.9, Newton's Mirror 21.7, Mona Lisa 0.7.

See the token-count test

The case file. First seen 10 Oct 2026, revealed 16 Oct 2026, developer Reflection AI, context 262,144 tokens, input Text, tool calls Yes, including parallel calls, speed in our tests about 846 tok/s. 11 Oct 2026, our finding: Our token-count test matches all 24 phrases to the tokenizer family Beam turned out to use. 15 Oct 2026, our finding: The Cat Jam preview matches the same 24 counts in our test. 16 Oct 2026: Reflection releases Beam 1.0 with open weights and credits the MissingNo demo to it.

Compare Beam with MiMo-V2.6-Pro, whose tokenizer it shares

Facts as text
Fact Value
First seen 10 Oct 2026
Revealed 16 Oct 2026
Developer Reflection AI
Context 262,144 tokens
Input Text
Tool calls Yes, including parallel calls
Speed in our tests about 846 tok/s
Access Preview ended; the released Beam is available

Run it

MissingNo was Beam 1.0, which is open under Apache 2.0 at reflection/Beam-1.0-501B-A23B. Its GGUF files are right here.

File Size Best for
IQ2_XXS/ 134 GB in 4 parts The smallest size we recommend: 192 GB machines, or a 32 GB GPU with 128 GB of RAM
hf download stealth-model/missingno --local-dir beam-1.0 --include "IQ2_XXS/*"

llama-server \
  -m beam-1.0/IQ2_XXS/Beam-1.0-501B-A23B-IQ2_XXS-00001-of-00004.gguf \
  -ngl all --n-cpu-moe 52 -fa on --jinja --temp 0.7 --top-p 0.99

--n-cpu-moe 52 keeps all 52 expert layers in system RAM. Lower it until your GPU is full. On a 192 GB Mac, leave it out.


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Text and images: CC BY 4.0, stealthmodels.com.

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