GPT OSS 120B

GPT OSS 120B

OpenAI's first open-weight model since GPT-2, featuring 117B parameters with MoE architecture. Designed for high-reasoning, agentic, and general-purpose production use cases with configurable reasoning depth and native tool use.

ConversationReasoningCode GenerationAnalysisTool UseFunction Calling
Provider
Openai
Release Date
2025-08-05
Size
XLARGE
Parameters
117B total (5.1B active per forward pass)

Benchmark Performance

Performance metrics on industry standard AI benchmarks that measure capabilities across reasoning, knowledge, and specialized tasks.

Codeforces

Outperforms o3-mini
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MMLU

Matches/exceeds o4-mini
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HLE

Matches/exceeds o4-mini
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TauBench

Matches/exceeds o4-mini (tool calling)
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Model Insights

All Model Responses

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