gpt-oss-120b
OpenAIgpt-ossOpen weightsActive
Open-weight 117B-parameter mixture-of-experts reasoning model from OpenAI.
- Released
- —
- Knowledge cutoff
- 2024-06-30
- Context window
- 131,072 tokens
- Max input
- —
- Max output
- —
- Modalities
- text → text
- Reasoning
- Yes
- Tool calling
- Yes
Licence: Apache-2.0. Model documentation
Prices by provider
Exact USD list prices. — means the price is unknown (not free). History is append-only: a change adds a new entry.
OpenRouter
Model id: openai/gpt-oss-120b
| Meter | Standard | Batch | Unit |
|---|---|---|---|
| Input | $0.037 | $0.0296 | per 1M tokens |
| Output | $0.17 | $0.136 | per 1M tokens |
Prices for openai/gpt-oss-120b on OpenRouter
- Effective from
- 2026-10-09
- Source
- OpenRouter API, fetched 2026-10-09 19:37:00 UTC
- Source entry
openai/gpt-oss-120b- Notes
- OpenRouter's listed price; individual upstream endpoints may cost more. Batch rates are the separate openai/gpt-oss-120b:batch id.
No earlier prices recorded.
API example
curl https://openrouter.ai/api/v1/chat/completions \
-H "Authorization: Bearer $OPENROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "openai/gpt-oss-120b", "messages": [{"role": "user", "content": "Hello"}]}'Model ids
| Provider | Id to send | Also accepted |
|---|---|---|
| OpenRouter | openai/gpt-oss-120b | |
This model as JSON
curl -s https://models.omg.bitop.dev/api/v1/models/gpt-oss-120b.json