About o3
o3 is an LLM that excels in advanced reasoning, coding, mathematics, science, and visual perception tasks. It is notable for its ability to integrate web browsing and image understanding directly into its problem-solving process.
Some other noteworthy features of o3 include agentic tool use—allowing it to chain together multiple tool calls (such as searching the web, running code, generating graphs or images) within a single task—and support for up-to-date information retrieval beyond its built-in knowledge. o3 can also interact with custom tools via function calling in the API and demonstrates strong performance on complex benchmarks across coding, science questions, software engineering tasks, and abstract reasoning.
| Metric | Value |
|---|---|
| Context Length | 200,000 tokens |
| Multilingual | Yes |
Ready to build with o3?
Try o3 in the Workbench to prompt it, compare outputs, and iterate on prompts without writing any code. When you're ready to ship, call the same model from our API and build your own apps on top of it.
curl -sSf -X POST https://hub.oxen.ai/api/ai/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer $OXEN_API_KEY" \
-d '{
"model": "o3-2025-04-16",
"messages": [
{
"role": "user",
"content": "Try sending a message."
}
]
}'API endpoint
See the API reference for request and response formats.
https://hub.oxen.ai/api/ai/chat/completions