o3 Pro
The o-series of models are trained with reinforcement learning to think before they answer and perform complex reasoning. The o3-pro model uses more compute to think harder and provide consistently...
o3 Pro specs and pricing
- Provider: OpenAI
- Released: June 10, 2025
- Context window: 200K tokens
- Max output: 100K tokens
- Input: text, files, images
- Output: text
- Price: $20 input / $80 output per 1M tokens
- Reasoning: yes
- Tool calling: yes
FAQ
- How much does o3 Pro cost? o3 Pro costs $20 per million input tokens and $80 per million output tokens through OpenRouter. In todo.is a typical agent step costs about 67.2 credits ($1 = 100 credits).
- What is the context window of o3 Pro? o3 Pro can read up to 200K tokens at once and write up to 100K tokens in one reply.
- Can I use o3 Pro without coding? Yes. In todo.is you pick o3 Pro as your agent's model and write to-dos in plain words, on the web, the Android app, WhatsApp or Telegram. No API key needed: credits are included, or you can bring your own key.
JavaScript is required to use the todo.is app.