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GPT-o3

OpenAIArena Rank #2

OpenAI's next-generation reasoning model succeeding o1. Delivers stronger performance on hard reasoning benchmarks.

Specifications

Context Window

200K

Parameters

Undisclosed

Input Price / 1M tokens

$10.00

Output Price / 1M tokens

$40.00

Release Date

April 16, 2025

Arena Rank

#2

Open Source

No

Best For

Advanced reasoningagentic tasksresearch

Pricing (per 1M tokens)

Input

$10.00

Output

$40.00

Frequently Asked Questions

What is GPT-o3?
OpenAI's next-generation reasoning model succeeding o1. Delivers stronger performance on hard reasoning benchmarks.
How much does GPT-o3 cost?
GPT-o3 costs $10.00 per 1M input tokens and $40.00 per 1M output tokens.
What is GPT-o3 best for?
GPT-o3 is best for: Advanced reasoning, agentic tasks, research.
Is GPT-o3 open source?
No, GPT-o3 is a proprietary model available through OpenAI's API.