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Top-Tier Reasoning

o1

OpenAI o1 is a groundbreaking AI model that thinks deeply before responding, mastering complex reasoning in science, coding, and math like never before. Unlock PhD-level problem-solving and self-fact-checking precision to tackle your toughest challenges with unmatched accuracy.

200k Context
Top-Tier Intelligence
Oct '23 Knowledge

Available for Chat, Vision, and File Uploads.

Performance Benchmarks

MMLU
90.8%
HumanEval
92.4%
MATH
85.5%

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 o1?

Capability Examples

Math Problem Solving
Solve this complex math puzzle: Cheryl's birthday is either July 16, August 15, or August 17. Albert and Bernard know the month and day separately. Albert says he doesn't know the date, but Bernard knows after hearing that. What's the date?
o1-preview analyzes step-by-step: Albert eliminates July 16 (unique day). Bernard, knowing day 15 or 17, deduces August 15 isn't possible. Date is August 17.
Tennis Balls Estimation
Estimate the maximum number of tennis balls that fit in a Boeing 737.
o1 calculates: Cabin volume ~100,000 liters. Tennis ball volume ~33.5 cm³. Packing efficiency 0.74. Max ~150 million balls, accounting for seats/cargo.

How to use

1
Go to Chat

Navigate to the "AI Chat" page.

2
Select Model

Ensure o1 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 o1 better than Claude 3.5 or Gemini? Test same prompts simultaneously in the Chat Playground.

Open Chat Playground

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