# openai/gpt-oss-20b

This model is an open weight reasoning model that uses the harmony response format and can adjust reasoning effort across low, medium, and high levels. It supports function calling, web browsing, Python code execution, structured outputs, and fine tuning for specialized use cases.

## Cite this

- Page: https://huggingbay.xyz/artifact/hf-model-openai-gpt-oss-20b
- Citation: openai/gpt-oss-20b. The Hugging Bay model record. https://huggingbay.xyz/artifact/hf-model-openai-gpt-oss-20b (retrieved 2026-11-14).
- Check a downloaded file: run `shasum -a 256 <file>` (macOS), `sha256sum <file>` (Linux) or `Get-FileHash -Algorithm SHA256 <file>` (Windows), then compare with that file's SHA-256 at https://huggingbay.xyz/api/artifacts/hf-model-openai-gpt-oss-20b/files?limit=100. How checks work: https://huggingbay.xyz/verification

## Facts

- Type: LLM
- Task: text-generation
- Framework: transformers
- License: apache-2.0: Permissive open license: commercial use, modification, and redistribution are permitted. (https://huggingface.co/openai/gpt-oss-20b/blob/main/LICENSE)
- Source: https://huggingface.co/openai/gpt-oss-20b
- Hosting: hosted (13 files)
- Files: 13 hosted of 17 listed
- File counts: "listed" is every file in the source repository; only hosted files download from Hugging Bay, and the download plan lists the files it selects for one download, so its count can differ.
- Hosted here: 13 hosted of 17 listed
- Full repo upstream: 41.3 GB
- Recommended file: 13.8 GB · model.safetensors
- Parameters: 20B
- Download: https://huggingbay.xyz/api/artifacts/hf-model-openai-gpt-oss-20b/download-plan (download plan: https://huggingbay.xyz/api/artifacts/hf-model-openai-gpt-oss-20b/download-plan)
- Per-file SHA-256: available for 13 of 13 hosted files via https://huggingbay.xyz/api/artifacts/hf-model-openai-gpt-oss-20b/files?limit=100
- Availability: Ready
- Downloadable: yes
- Run-ready: no (Hugging Bay has not certified a run path for this model; hosted bytes are downloadable and hash-checkable only)
- Peer-assisted fallbacks: 0 verified, 0 pending review
- Downloads: 7000889
- Stars: 5295
- Card completeness: 85%

## Description

This model is an open weight reasoning model that uses the harmony response format and can adjust reasoning effort across low, medium, and high levels. It supports function calling, web browsing, Python code execution, structured outputs, and fine tuning for specialized use cases.

## Model Card Facts

- Declared license: apache-2.0
- Pipeline: text-generation
- Library: transformers
- Task categories: text-generation
- Paper ids: 2508.10925
- File hints: 16 upstream file samples

## Referenced Data

- Paper: 2508.10925

## File Hints

- .gitattributes
- LICENSE
- README.md
- USAGE_POLICY
- chat_template.jinja
- config.json
- generation_config.json
- metal/model.bin
- model-00000-of-00002.safetensors
- model-00001-of-00002.safetensors
- model-00002-of-00002.safetensors
- model.safetensors.index.json

## Quality Checklist

- Summary: passed
- Description: passed
- Model card metadata: passed
- License: passed
- Provenance: passed
- File inventory: passed
- Hosted bytes: passed
- Scan result: passed
- Manifest signature: passed

## Safety Notes

- Mirrored 6 selected Hugging Face files by configured-admin; hashes computed from downloaded bytes and manifest signed.
- External catalog metadata imported from Hugging Face public API on 2026-07-02T00:22:10.011Z.
- Open license detected as apache-2.0.
- Not a run kit: hosted, hash-checked bytes only; run readiness is not certified for this model yet.

## Actions

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- Distribution: https://huggingbay.xyz/api/artifacts/hf-model-openai-gpt-oss-20b/distribution
- Manifest: https://huggingbay.xyz/api/manifests/hf-model-openai-gpt-oss-20b
- Download plan (per-file SHA-256 + signed download URLs): https://huggingbay.xyz/api/artifacts/hf-model-openai-gpt-oss-20b/download-plan
- Hosted download rows: https://huggingbay.xyz/api/downloadable-files?artifactId=hf-model-openai-gpt-oss-20b&limit=100
- Request mirror: not applicable.
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