OpenAI gpt-oss 20B

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 Batch predictions Function calling Structured output Not supported
Usage types	Supported Dynamic shared quota Fixed quota Not supported Provisioned Throughput
Versions	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	See Pricing.