Context 1 is an open-source language model by chromadb. Features: 20b LLM, VRAM: 41.8GB, Context: 128K, License: apache-2.0, LLM Explorer Score: 0.43.
Model Card on HF 🤗: https://huggingface.co/chromadb/context-1
Context 1 Benchmarks
nn.n% — How the model compares to the reference models: Anthropic Sonnet 3.5 ("so35"), GPT-4o ("gpt4o") or GPT-4 ("gpt4").
What is the LLM Explorer Rank (Score)
Context 1 Parameters and Internals
| LLM Name | Context 1 |
| Repository 🤗 | https://huggingface.co/chromadb/context-1 |
| Base Model(s) | |
| Model Size | 20b |
| Required VRAM | 41.8 GB |
| Updated | 2026-03-27 |
| Maintainer | chromadb |
| Model Type | gpt_oss |
| Model Files | |
| Model Architecture | GptOssForCausalLM |
| License | apache-2.0 |
| Context Length | 131072 |
| Model Max Length | 131072 |
| Transformers Version | 5.3.0 |
| Tokenizer Class | TokenizersBackend |
| Padding Token | <|endoftext|> |
| Vocabulary Size | 201088 |
Best Alternatives to Context 1
Best Alternatives |
Context / RAM |
Downloads |
Likes |
|---|---|---|---|
| GPT Oss 20B | 128K / 13.8 GB | 7309629 | 3575 |
| GPT Oss Safeguard 20B | 128K / 13.8 GB | 43610 | 202 |
| GPT Oss 20B Heretic | 128K / 41.6 GB | 3612 | 103 |
| OptiMind SFT | 128K / 42 GB | 968 | 98 |
| GPT Oss 20B BF16 | 128K / 41.6 GB | 110851 | 20 |
| GPT Oss 20B | 128K / 13.8 GB | 41873 | 35 |
| Medical Reasoning GPT Oss 20B | 128K / 12.5 GB | 3422 | 24 |
| GPT Oss 20B Dequantized | 128K / 41.6 GB | 4120 | 0 |
| Jinx GPT Oss 20B Mxfp4 Mlx | 128K / 13.7 GB | 181 | 3 |
| GPT OSS Code Reasoning 20B | 128K / 13.8 GB | 25 | 17 |
Note: green Score (e.g. "73.2") means that the model is better than chromadb/context-1 .
Rank the Context 1 Capabilities
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Original data from HuggingFace, OpenCompass and various public git repos.
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Release v20260327b