o3

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.

ChatOpenAI200k tokens$2.1801 / $8.7205 · 1M

openai/o3

Context
200k tokens
Completion cap
100,000
Tools
Yes
JSON
Yes
Released
2025-04-16

Call it from Geek Hub

Same OpenAI SDK. Change the base URL and the model id.

curl https://api.geekhub.mx/v1/chat/completions \
  -H "Authorization: Bearer $GEEKHUB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/o3",
    "messages": [{"role": "user", "content": "Hola"}]
  }'
Get an API key

Frequently asked questions

What is o3?
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. o3 runs on the Geek Hub API (OpenAI-compatible). Model id: openai/o3.
Is o3 free?
No. Input is $2.1801 per 1M tokens and output is $8.7205 per 1M tokens on Geek Hub (markup included).
What is the context length of o3?
o3 has a 200k tokens context window. It supports up to 100,000 completion tokens.
Does o3 support tool calling and structured outputs?
o3 accepts tools and tool_choice for function calling. It also supports structured outputs via a JSON schema in response_format.
When was o3 released?
o3 was released on 2025-04-16.

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