Models·OpenAI

gpt-oss-120b (batch)

openai/gpt-oss-120b:batch

gpt-oss-120b is an open-weight, 117B-parameter Mixture-of-Experts (MoE) language model from OpenAI designed for high-reasoning, agentic, and general-purpose production use cases. It activates 5.1B parameters per forward pass and is optimized...

$0.030Input, per million tokens
$0.14Output, per million tokens
131KContext window
118KLongest answer

131K tokens of context — about 98,304 words, on a scale that ends at 2M.

What it can do

  • Reasoning
  • Tool use
  • Open weights
  • Takes text
  • Gives text

Released 5 Aug 2025 · checked 3 Oct 2026.

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