OpenAI requires bringing your own API key to use o3 over the API. Set up here: https://openrouter.ai/settings/integrations

OpenAI: o3

openai/o3

Created Apr 16, 2025200,000 context
$2/M input tokens$8/M output tokens$1.53/K input imgs

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. Note that BYOK is required for this model. Set up here: https://openrouter.ai/settings/integrations

Apps using o3

Top public apps this week using this model

    Apps Using OpenAI: o3 | OpenRouter