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gpt-oss-20b

OpenRouterOpen weights

gpt-oss-20b by OpenRouter costs $0.03 per 1M input tokens and $0.14 per 1M output tokens, with a 131K-token context window.

Pricing

Input (per 1M tokens)
$0.03
Output (per 1M tokens)
$0.14
Cached input (per 1M)

Specifications

Provider
OpenRouter
Context window
131K tokens
Parameters
21B
Released
Aug 2025
Open weights
Yes
Frontier model
No

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FAQ

Pricing is per 1M tokens (USD); confirm with the provider before production use.