openai
openai/gpt-5-5-2026-04-23/Released Apr 2026

GPT 5.5

OpenAI's newest frontier model — improved reasoning over 5.4 at the same 1.05M context, configurable thinking budget, and full tool-use support.

Featured
Provider
openai
Modality
multi-to-text
Released
Apr 2026
Pricing
$6.50 / 1M in$39.00 / 1M out

Ready to build with GPT 5.5?

Sign in to grab your API key and start making requests.
bash
curl -sSf -X POST https://hub.oxen.ai/api/chat/completions \
    -H "Content-Type: application/json" \
    -H "Authorization: Bearer $OXEN_API_KEY" \
    -d '{
  "model": "gpt-5-5-2026-04-23",
  "messages": [
    {
      "role": "user",
      "content": "Try sending a message."
    }
  ]
}'