FAST & FRUGAL · OpenAI
gpt-oss-20b
gpt-oss-20b is a reasoning, tool-using model from OpenAI in the GPT family, living in Silvergrass Fields (fast & frugal). It reads text and writes text, with a 131K-token context window and up to 33K tokens of output. On OpenRouter it costs $0.020 per million input tokens and $0.090 per million output tokens.
See gpt-oss-20b in 3DOpen in the WorktableView on OpenRouter
Specifications
- Provider
- OpenAI
- Family
- GPT
- Province
- Silvergrass Fields
- Context window
- 131K tokens
- Maximum output
- 33K tokens
- Input / 1M tokens
- $0.020
- Output / 1M tokens
- $0.090
- Accepts
- text
- Produces
- text
- Reasoning
- Yes
- Tool use
- Yes
- Added to OpenRouter
- 2025-08-05
- Model ID
openai/gpt-oss-20b- Price history
- —All recorded prices
From the 2026-10-24 catalog snapshot. Prices are US dollars per million tokens.