gpt-oss-20b
Catalogue only
Open weights
Sovereignty and hosting
Catalogue only
This model is catalogued for reference. It is not hosted on LLM EU yet, and no first-party endpoint serves it here. Requests to it go to the provider directly, under that provider's own terms.
Summary
gpt-oss-20b is the smaller of OpenAI’s two open-weight reasoning models: 21B total parameters, 3.6B active, Apache-2.0 licensed and small enough to run in about 16GB of memory. Its configuration declares the same 131,072-token context window as the 120B model. It targets local and latency-sensitive deployments rather than peak quality.
Specifications
- Provider
- OpenAI (US)
- Context window
- 131k
- Parameters
- 20.91B
- Modalities
- text
- License
- apache-2.0 · licence
- Open weights
- yes
- Release date
- 05 Aug 2025
- Tasks
- reasoning, cheap, coding, rag
Languages
Strong: en
Adequate: de, fr, es, it, pt, ja, zh
Languages
Strong
- en
Adequate
- de
- fr
- es
- it
- pt
- ja
- zh
Not verified: the provider has not documented this claim. — a language is listed as strong only where a source claims it; the card links the evidence where one exists.
When to use it
Strengths
- runs in about 16GB of memory
- same 131,072-token window as the larger sibling
- Apache-2.0 licence
- reasoning-effort control
Limits
- quality clearly below the 120B model
- harmony response format required
- no evaluation has been run by LLM EU