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High Reasoning

o3-mini-high

OpenAI o3-mini-high is a specialized reasoning model that delivers intelligence comparable to o1 with exceptional STEM capabilities, faster performance, and improved efficiency for technical domains requiring precision and speed. It features adjustable reasoning effort levels, supports key developer features like function calling and structured outputs, and is available to all paid users with unlimited access for Pro subscribers.

200k Context
High Intelligence
Oct '23 Knowledge

Available for Chat, Vision, and File Uploads.

Performance Benchmarks

MMLU
86.9%
MATH
97.9%
MGSM
92.0%

How do you want to interact?

Start a Conversation

Ask anything.
Have a natural conversation, brainstorm ideas, draft emails, or ask for advice.

Start Chatting

Use a Persona

Specialized Experts.
Instruct the AI to act as a Coding Tutor, Marketing Expert, or Travel Guide.

Pick a Persona

Why use o3-mini-high?

Enhanced Chain-of-Thought Reasoning

Delivers scalable, deeper reasoning steps with up to 100,000 tokens for complex multi-step problems like math and logic

Superior Performance in Math and Coding

Achieves high accuracy on benchmarks like Omni-MATH (68.5%), FrontierMath (32%+), and LiveBench coding, outperforming predecessors

Multimodal Visual Reasoning

Handles visual tasks with strong performance, reaching 48.0% on VisualProbe-Hard with extended interaction turns

Capability Examples

Complex Math Problem
Solve this AIME-level problem: Find the number of positive integers n ≤ 1000 such that the equation x^2 + n x + (n^2 - 1) = 0 has integer roots.
After reasoning step-by-step, the discriminant is n^2 - 4(n^2 - 1) = 4 - 3n^2. For integer roots, discriminant must be a perfect square k^2 ≥ 0, so 4 - 3n^2 = k^2. Thus 3n^2 + k^2 = 4. Possible n=1 (k=1), roots -1,-2. No other n≤1000 works. Answer: 1
Coding Challenge
Write Python code to solve a real GitHub issue: Implement a function to detect cycles in a directed graph using DFS, optimized for large inputs.
python
This passes SWE-bench style tests efficiently.
fas fa-code

How to use

1
Go to Chat

Navigate to the "AI Chat" page.

2
Select Model

Ensure o3-mini-high is selected.

3
Type Prompt

Ask a question or paste code.

4
Interact

Refine the answer by replying to the AI.

Compare LLMs Side-by-Side

Is o3-mini-high better than Claude 3.5 or Gemini? Test same prompts simultaneously in the Chat Playground.

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