o4-mini
OpenAI o4-mini is a compact reasoning model in the o-series, optimized for fast, cost-efficient performance while retaining strong multimodal and agentic capabilities. It supports tool use and demonstrates competitive reasoning...
Capabilities
Modalities
Quick stats
Performance
Supported parameters
| Parameter | Always | Default |
|---|---|---|
| include_reasoning | - | |
| max_tokens | - | |
| reasoning | - | |
| response_format | - | |
| seed | - | |
| structured_outputs | - | |
| tool_choice | - | |
| tools | - |
Pricing
| Input price | $0.66 · 1M tokens |
| Output price | $2.64 · 1M tokens |
| Context window | 200K tokens |
| Compatible endpoints | openai |
| Vendor | OpenAI |
Call o4-mini from your code
Point any OpenAI-compatible SDK at UnoRouter and request the model by name. Replace YOUR_API_KEY with a real key from your dashboard.
curl https://api.unorouter.com/v1/chat/completions \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "o4-mini",
"messages": [{"role": "user", "content": "Hello!"}]
}'Frequently asked questions
How much does o4-mini cost per 1M tokens?
Input is priced at $0.66 per 1M tokens, output at $2.64 per 1M tokens. Billing is per token, no rounding to batch sizes.
How do I access o4-mini via API?
Send requests to the UnoRouter /v1/chat/completions endpoint with model=o4-mini. Any OpenAI-compatible client library works. Authentication uses a standard Bearer token.
What is the context window of o4-mini?
o4-mini supports a context window of 200K tokens, shared between your prompt and the model's response.