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OpenAI

gpt-oss-20b (free)

openai/gpt-oss-20b:free · rates as of · Benchmarks · Plans · Calculator

Open-weight GPT model for self-hosted reasoning and instruction-following workloads

Cheapest input
$0
$/MTok · OpenRouter
Cheapest output
$0
$/MTok
Context
131K
tokens
Offers
1
2 sources

Offers

Same model, different listings. First-party, router, and aggregator rows stay separate so you can see the spread instead of a single blended number. Showing free/$0 offers. Hide them.

SourceProviderInputOutputCache readContext
OpenRoutercheapestopenai/gpt-oss-20b:freeOpenRouter$0$0$0131K

Capabilities

  • Reasoning
  • Tool calling
  • Structured output
  • Open weights
  • In: text
  • Out: text
Released: 2025-08-05Family: gpt-oss

Scores

Sparse coverage on purpose. Missing a score means we have not linked one yet, not that the model is unranked. Full boards on /benchmarks.

Sources: Arena AI, Artificial Analysis. See /benchmarks.

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