About GPT 5.6 Sol
GPT 5.6 Sol is the top-tier GPT-5.6 model for complex reasoning, coding, and professional workflows. The gpt-5.6 alias routes requests to this model. It reaches the family's highest quality with fewer output tokens than GPT 5.5, and produces more polished frontend layouts, visual hierarchy, and design judgment.
It supports configurable reasoning effort (none, low, medium, high, xhigh, and max), a pro reasoning mode for quality-first tasks, programmatic tool calling, persisted reasoning across turns, and a broad tool set including functions, web search, file search, and computer use.
| Metric | Value |
|---|---|
| Context Length | 1,050,000 tokens |
| Max Output Tokens | 128,000 tokens |
| Knowledge Cutoff | Feb 16, 2026 |
| Multilingual | Yes |
Ready to build with GPT 5.6 Sol?
Try GPT 5.6 Sol 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-5-6-sol",
"messages": [
{
"role": "user",
"content": "Try sending a message."
}
]
}'