OpenAI gpt-oss 20B is a 20B open-weight language model released under the Apache 2.0 license. It is well-suited for reasoning and function calling use cases. The model is optimized for deployment on consumer hardware.
The 20B model delivers similar results to OpenAI o3-mini on common benchmarks and can run on edge devices with 16GB of memory, making it ideal for on-device use cases, local inference, or rapid iteration without costly infrastructure.
Managed API (MaaS) specifications
View model card in Model Garden
gpt-oss-20b-maas
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gpt-oss-20b-maas - Launch stage: GA
- Release date: August 13, 2025
Model availability
- United States
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us-central1
ML processing
- United States
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Multi-region
us-central1:
- Max output: 32,768
- Context length: 131,072
Deploy as a self-deployed model
To self-deploy the model, navigate to the gpt-oss 20B model card in the Model Garden console and click Deploy model. For more information about deploying and using partner models, see Deploy a partner model and make prediction requests .
