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o3

OpenAI · o3

Default
Flagship
Latest in family

Key Metrics

Input Limit

200K tokens

Output Limit

100K tokens

Input Cost

$10.00/1M

Output Cost

$40.00/1M

Sample API Code

Required Libraries

Notes

o3 is a well-rounded and powerful model, our most powerful reasoning model. Excels at technical writing and instruction-following. Use it to think through multi-step problems. Reasoning: Highest. Speed: Slowest. Fine-tuning, distillation, and predicted outputs are not supported. Reasoning token support.

Capabilities

math
science
coding
visual reasoning
technical writing
instruction-following
multi-step problem solving
analysis across text, code, and images
reasoning
streaming
function calling
structured outputs

Supported Data Types

Input Types

text
image

Output Types

text

Strengths & Weaknesses

Exceptional at

math
science
coding
visual reasoning
technical writing
instruction-following
multi-step problem solving
analysis across text, code, and images
reasoning

Poor at

slowest speed

Additional Information

Latest Update

Apr 16, 2025

Knowledge Cutoff

2024-06-01