$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.
OpenAI: o3 – Recent Activity and Usage Stats | OpenRouter
Recent activity on o3
Total usage per day on OpenRouter
Prompt
105M
Reasoning
10.7M
Completion
5.78M
Prompt tokens measure input size. Reasoning tokens show internal thinking before a response. Completion tokens reflect total output length.