GPT-5.5 Pro
Coming soongpt-5.5-pro
Context 1.1MMax out 128KReleased Apr 23, 2026Text chatVisionReasoningFunction callingStructured outputWeb searchFile searchCode InterpreterMcp
Pricing
| Input · per 1M tokens | $30.00 |
| Output · per 1M tokens | $180.00 |
| Web search · per call | $0.0100 |
Call it
Swap <YOUR_TTTTT_API_KEY> and the snippet runs as-is.
curl https://api.ttttt.ai/v1/chat/completions \ -H "Authorization: Bearer $TTTTT_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "model": "gpt-5.5-pro", "messages": [{ "role": "user", "content": "Hello!" }] }'More from OpenAI
This model is listed publicly but no enabled channel routes to it yet — calls will succeed once a channel is wired up.