O1

o1-2024-12-17
byOpenAI|Created Jun 7, 2025
Chat Completions

The latest and strongest model family from OpenAI, o1 is designed to spend more time thinking before responding. Trained with large-scale reinforcement learning for chain-of-thought reasoning, it is optimized for math, science, programming, and other STEM tasks, consistently achieving PhD-level accuracy on industry benchmarks.

Pricing

Pay-as-you-go rates for this model. More details can be found here.

Input Tokens (1M)

$7.50

Output Tokens (1M)

$30.00

Capabilities

Input Modalities

Text
Image
File

Output Modalities

Text

Supported Parameters

Available parameters for API requests

Frequency Penalty
Logit Bias
Max Completion Tokens
Parallel Tool Calls
Prediction
Presence Penalty
Reasoning Effort
Response Format
Stop
Temperature
Top P
Web Search Options