Intelligence index
Outperforms 28% of compared models
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 lower-latency inference and deployability on consumer or single-GPU hardware. The model is trained in OpenAI’s Harmony response format and supports reasoning level configuration, fine-tuning, and agentic capabilities including function calling, tool use, and structured outputs.
- Input / output price
- $0.018/$0.09per 1M tokens
- Context
- 131K
- Released
- 2025-08-05
Pricing
Artificial Analysis
Explore rankingsDesign Arena
Elo scores and win rates across design and agent tasks.
Model Arena
Data Visualization
933Elo
Win rate 39.7%
Website
852Elo
Win rate 27.9%
Related Models
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- Context
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