GPT 5.5 Pro
Review GPT 5.5 Pro on key metrics including price, context length, throughput, and model features.
AuthorOpenAI
Context Length1.1M
Supports Tools
GPT-5.5 Pro is OpenAI’s high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads. It features a 1M+ token context window (922K input, 128K output) with support for text and image inputs, and is designed for long-horizon problem solving, agentic coding, and precise execution across multi-step workflows.
Activity
Last 14 daysPrompt
7Completion
13Total
20Startup
Startup
Latency (p50)4.04s
Throughput (p50)-
Pricing
Input$20.00/M tokens
Output$100.00/M tokens
Features
Input Modalitiestext, image, file
Output Modalitiestext
Supported EndpointsChat Completions
Vision
Supports Tools