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gpt-oss-20b (free)

OpenRouterOpen weights

gpt-oss-20b (free) by OpenRouter costs $0.00 per 1M input tokens and $0.00 per 1M output tokens, with a 131K-token context window.

Pricing

Input (per 1M tokens)
$0.00
Output (per 1M tokens)
$0.00
Cached input (per 1M)
—

Specifications

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

Compare gpt-oss-20b (free) with…

gpt-oss-20b (free) vs GPT-5.3 Codex$14.00/1Mgpt-oss-20b (free) vs OpenRouter: Fusion$-1,000,000.00/1Mgpt-oss-20b (free) vs MiniMax-M2$1.00/1Mgpt-oss-20b (free) vs Qwen3 Coder Next$0.80/1Mgpt-oss-20b (free) vs GPT OSS 120B$0.15/1Mgpt-oss-20b (free) vs gpt-oss-20b$0.14/1M

FAQ

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