OpenAI
GPT-5.5 Pro (xhigh)
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...
Introducing GPT-5.5Model Snapshot
ReleaseApr 23, 2026
Context1,050,000
Overall
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Coding
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Blended Price
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Strength Profile
Percentile score by analysis domain.
Not enough comparable domain data for this model.
Benchmark Percentiles
Higher bars mean stronger relative placement.
Model Details
Runtime
Max Output128,000
Streaming speed is not measured for this model yet.
Pricing
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All Benchmarks
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