About GPT 5
GPT 5 is a multimodal LLM featuring a multi-model architecture with dynamic routing across specialized sub-models for different prompt complexities. It excels in reducing hallucinations, maintaining higher factual accuracy, supporting extended context lengths, and handling simultaneous text and image inputs with notable improvements in reasoning and coding reliability.
Some other noteworthy features of GPT 5 include adaptive response modes (Auto, Fast, Thinking) for balancing speed and reasoning effort, parameter control for verbosity and reasoning depth, and enhanced function calling for toolchain integration.
| Metric | Value |
|---|---|
| Context Length | 400,000 tokens |
| Multilingual | Yes |
Ready to build with GPT 5?
Try GPT 5 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": "gpt-5-2025-08-07",
"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