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.
View model card in Model Garden
Model ID
gpt-oss-20b-maas
Launch stage
GA
Supported inputs & outputs
- Inputs:
Text - Outputs:
Text
Capabilities
- Supported
- Not supported
Usage types
- Supported
- Not supported
Versions
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gpt-oss-20b-maas - Launch stage: GA
- Release date: August 13, 2025
Supported regions
Model availability
- United States
-
us-central1
ML processing
- United States
-
Multi-region
Limits
us-central1:
- Max output: 32,768
- Context length: 131,072
Pricing
