$2/M input tokens$8/M output tokens$10/K web search
o3 is a well-rounded and powerful model across domains. It sets a new standard for math, science, coding, and visual reasoning tasks. It also excels at technical writing and instruction-following. Use it to think through multi-step problems that involve analysis across text, code, and images.
Recent activity on o3
Total usage per day on OpenRouter
Prompt
39.7M
Reasoning
5.29M
Completion
3.72M
Prompt tokens measure input size. Reasoning tokens show internal thinking before a response. Completion tokens reflect total output length.