OpenAI o3
OpenAI
★ Free Tier Available🌐 Text & Logic📊 3+ Use Cases
Overview
The precursor to GPT-5 reasoning. o3 is a pure 'Chain of Thought' model. It doesn't have vision or audio but it is the fastest and smartest model for solving logic riddles and coding bugs. It is designed to 'check its work' multiple times before responding.
How OpenAI o3 works:
- 1
Ask it to 'Check your work twice'
- 2
Provide the error log
📋 Quick Specs
Pricing
Pro ($200/mo) | API High Tier
Context Window
128K tokens
API Access
✅ Yes
Released
September 2025
Supports:
text-only
🚀 Try This Prompt
Find the logic error in this Python script that causes a race condition.
💡 Paste this into OpenAI o3 to see it in action.
Details
Best For
DebuggingMath RiddlesLogic Validation
Limitations
- ! Text-only
- ! No real-time web search
Developer Resources
Listing Info
PublisherOpenAI
CategoryText & Logic
UpdatedJan 2026