OpenAI: gpt-oss-20b
openai/gpt-oss-20b
gpt-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...
Modalities
In / Out Price
$0.018 / $0.09 per 1M
Context
131K
Released
Aug 5, 2025
Knowledge Cutoff
Jun 2024
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