OpenAI: gpt-oss-20b

OpenAI

gpt-oss-20b is an open-weight 21B parameter model released by OpenAI under the Apache 2.0 license. It uses a Mixture-of-

Ultra-low cost
Text
Visit official site →Compare →

Specifications

VendorOpenAI
Familyopenai
Context131.1K · 98.3k words（≈ a thesis）
Max output131.1K · 98.3k words（≈ a thesis）
Released2026-06-19
Open sourceNo
Tool use—

Pricing across channels

per 1M tokens, USD

ChannelTypeInputOutput→
OpenRouter (auto)Aggregator$0.029$0.14visitAd
OpenRouter API (auto-fetched)· 2026-06-19

Related models

Similar tier, vendor or price range

OpenAI: gpt-oss-120b
OpenAI
Intel. —$0.039/$0.18
OpenAI: gpt-oss-120b (free)
OpenAI
Intel. —$0/$0
OpenAI: gpt-oss-20b (free)
OpenAI
Intel. —$0/$0
OpenAI: gpt-oss-safeguard-20b
OpenAI
Intel. —$0.075/$0.30