CrossModel
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Context, limits, capabilities, price and use cases side by side — up to 4 models at a time. The URL holds your selection, so you can share it.

GPT-5.5 ProChat with this model
AttributeGPT-5.5 Proopenai/gpt-5.5-pro
Specs
Context window1M
Max output128K
Input modalitiesTextImage
Output modalitiesText
Capabilities
StreamingNot supported
Tool callingSupported
Structured output (JSON)Supported
Image inputSupported
Thinking modeSupported
Price / 1M tokens
Input$ 30.00>= 272K$ 60.00
Output$ 180.00>= 272K$ 270.00
Cache read$ 30.00>= 272K$ 60.00
Cache write$ 30.00>= 272K$ 60.00
What it is good at
Best for
  • Difficult research and analysis
  • High-stakes knowledge work
Published benchmarks
BrowseComp (with tools)accuracy
  • 90.1%effort xhigh(setup not fully disclosed)
GDPval (wins or ties)wins_or_ties
  • 82.3%effort xhigh(setup not fully disclosed)
FrontierMath Tier 4accuracy
  • 39.6%effort xhigh(setup not fully disclosed)
Humanity's Last Exam Full (with tools)accuracy
  • 57.2%effort xhigh(setup not fully disclosed)
GeneBenchaccuracy
  • 33.2%effort xhigh(setup not fully disclosed)