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/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...

Capabilities:

Input
  • Text input
  • Image input (vision)
  • File input (PDF)
  • Audio input
  • Video input
Output
  • Text output
  • Image output
  • Audio output
Pricing & availability:

  • OpenRouterOpenRouter

    $0.029 / $0.14 per M
Sources:
OpenRouterOpenRouter
Share:
Details:

  • OpenAIProvider

    OpenAI

  • Context window

    131K

  • Input price

    $0.029/M

  • Output price

    $0.14/M

  • Open weights

    Yes

  • Knowledge cutoff

    Jun 2024

  • Released

    Aug 2025
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Appears in rankings:
Best models to run with Ollama
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