10
Intelligence Index
Above 34% of 46 other free models
Op
OpenAI: gpt-oss-20b
Free allowance
Up to10,000requests / day
via NVIDIA
- 40 requests / minute
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...
- Input
- text
- Output
- text
Providers
Available through 3 free providers. Use the model ID and API settings below to connect.
* The provider match may differ from this model. Check its docs for details.
Benchmarks
Compare scores and explore results by category.
Bars show scores from other free models on this site. The marker shows this model’s score. Comparisons include only models with a score for that index.
Scores from Artificial AnalysisFrequently asked questions
Free access, setup, and what to expect.
gpt-oss-20b is available with up to 10,000 requests / day free through NVIDIA. Additional limits apply at the same time: 40 requests / minute. Free allowances can change. Check the gpt-oss-20b provider limits before you start.
To use gpt-oss-20b, choose one of the listed gpt-oss-20b API providers and follow the provider’s account and API-key setup guide. Copy the gpt-oss-20b model ID and connection settings for your chosen provider into your app or API client. Model IDs can differ between providers. API requests go directly to the provider; Free Models is a comparison site.
gpt-oss-20b accepts text as listed input formats. Listed output formats include text. Image or audio input support does not imply image or audio generation. Check the chosen provider’s gpt-oss-20b documentation for supported file types and request formats.
gpt-oss-20b has a listed context window of 131K tokens. Tokens are small pieces of content rather than a word count. Instructions, conversation history, and other inputs use context space, and the response also needs room. The maximum output length for gpt-oss-20b may be smaller than the context window and can vary by provider.
gpt-oss-20b has both reasoning and tool calling listed as supported capabilities. Reasoning enables additional processing for complex problems. Tool calling allows a model to request functions that your app executes. Check the chosen provider’s documentation for capability availability and setup.
Review the listed gpt-oss-20b benchmark results to compare performance on measured tasks. Compare scores within the same benchmark: coding indexes, Elo ratings, and win rates measure different things. The index comparison charts include only scored free models listed on Free Models. Evaluate gpt-oss-20b on examples from your own task alongside context size and provider limits.