gpt-oss-120b (free) pricing
gpt-oss-120b is an open-weight, 117B-parameter Mixture-of-Experts (MoE) language model from OpenAI designed for high-reasoning, agentic, and general-purpose production use cases. It activates 5.1B parameters per forward pass and is optimized... Live index: 1 priced offer. Best input $0.0000 per million tokens from Openrouter. Best output $0.0000 per million tokens from Openrouter.
Pricing across providers
Use this table to read gpt-oss-120b (free) list prices. We show 1 source right now. Lowest input in the grid: Openrouter. The chart below the table helps when output prices are much higher than input prices.
| Provider | Input / 1M | Output / 1M | Cached input | Batch |
|---|---|---|---|---|
O Openrouter | $0.0000 | $0.0000 | — | — |
Input vs output · 1M tokens
Cost calculator
Use this block to stress test gpt-oss-120b (free) cost without a spreadsheet. All estimates come from public list rates in this page.
Model specifications
Quick spec sheet for gpt-oss-120b (free) before you dive back into pricing. Reported under OpenAI.
- Context window
- 131,072 tokens
- Max output
- 131,072 tokens
- Vision (images)
- No
- Tool / function calling
- Yes
- Streaming
- Yes
- Released
- Aug 2025
- Primary provider
- OpenAI
- Model family
- N/A
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Frequently asked questions
Read these after the table if you want plain language around gpt-oss-120b (free) rates. The short model note from our index: gpt-oss-120b is an open-weight, 117B-parameter Mixture-of-Experts (MoE) language model from OpenAI designed for high-reasoning, agentic, and general-purpose production use cases. It activates 5.1B parameters per forward ...
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