AI model · OpenAI
GPT-5.5
Model ID: openai/gpt-5.5
- Input
- $5 per 1M tokens
- Output
- $30 per 1M tokens
- Context
- 1.1M tokens at once
- Max output
- 128K tokens per reply
- Released
- 24 Apr 2026 OpenAI
What it can do
- YesReasoning
- YesTool calling
- YesImage input
- NoOpen weights
- NoFree to use
Takes file, image, text; gives text.
How its listing describes it
GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token...
Sources
- OpenAI: GPT-5.5 on OpenRouter — read 2 Oct 2026