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gpt-oss-20b: price, context, what it takes

gpt-oss-20b from OpenAI, as OpenRouter's public list names it: openai/gpt-oss-20b. Read 2026-11-06.

Prices are OpenRouter's, in US dollars. For most models that is the vendor's own list price; a vendor selling direct can differ.

The modelopenai/gpt-oss-20b
  • Input, per 1M tokens$0.0300
  • Output, per 1M tokens$0.130
  • Cached input, per 1M tokens$0.0300
  • Context window131,072 tokens
  • Longest answer117,964 tokens
  • Takestext
  • Givestext
  • Acceptsreasoning, JSON schema, tools
  • Released2025-08-05
  • In the list since2026-10-28
Price over time
  • 2026-11-05 - 2026-11-06: input $0.0300, output $0.130
  • 2026-11-04 - 2026-11-05: input $0.0180, output $0.0900
  • 2026-11-04 - 2026-11-04: input $0.0300, output $0.130
  • 2026-11-03 - 2026-11-03: input $0.0180, output $0.0900
  • 2026-11-01 - 2026-11-03: input $0.0300, output $0.130
  • 2026-10-28 - 2026-11-01: input $0.0180, output $0.0900
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All modelsJSON