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 context window (922K input, 128K output) with support for text and image inputs, enabling large-scale reasoning, coding, and multimodal workflows within a single system.
by Openai|1M context|$5.00/M input tokens|$30.00/M output tokens
Endpoints
Available providers for this model, with details on pricing, context limits, and real-time health metrics.
