gpt-oss-20b (batch)
openai/gpt-oss-20b:batchgpt-oss-20b is an open-weight 21B parameter model released by OpenAI under the Apache 2.0 license. It uses a Mixture-of-Experts (MoE) architecture with 3.6B active parameters per forward pass, optimized for...
$0.024Input, per million tokens
$0.11Output, 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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