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o3

About

OpenAI o3 reasoning model with advanced multi-step problem-solving capabilities.

Capabilities

VisionMultimodalReasoningFunction CallingTool UseStructured OutputsCode Execution

Providers(3)

Compare all →
ProviderInput (per 1M)Output (per 1M)Type
OpenAI API$10$40Serverless
OpenRouter$2$8Serverless
OpenAI Batch API$1$4Serverless

Benchmark Scores(7)

BenchmarkScoreVersionSource
HumanEval96.72025-04OpenAI
SWE-bench Verified71.72025-01OpenAI
LiveCodeBench79.12025-04OpenAI
Aider Polyglot81.32026-04 (high)https://aider.chat/docs/leaderboards
Chatbot Arena1412.0https://lmarena.ai
Google-Proof Q&A87.7diamondhttps://openai.com/index/openai-o3-and-o4-mini-system-card/
Massive Multi-discipline Multimodal Understanding82.9https://mmmu-benchmark.github.io/

Rankings

Specifications

Familyo3
Released2025-03-31
Context128K
ArchitectureDecoder Only
Specializationgeneral
Trainingfinetuning

Created by

Cutting-edge research and development.

San Francisco, California, United States
Founded 2015
Website