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OpenAI

Available in Shortly AI

GPT 5.5

Released April 24, 2026

ReasoningVision (Image)Tool Use

GPT‑5.5 understands what you’re trying to do faster and can carry more of the work itself. It excels at writing and debugging code, researching online, analyzing data, creating documents and spreadsheets, operating software, and moving across tools until a task is finished. Instead of carefully managing every step, you can give GPT‑5.5 a messy, multi-part task and trust it to plan, use tools, check its work, navigate through ambiguity, and keep going.

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Context window
1M tokens
Maximum output
128K tokens
Input pricing
$5.00/M
Output pricing
$30.00/M

Independent benchmark

LiveBench performance

80.2overall

Benchmark data from LiveBench, release 2026-06-25. Scores are pinned and are not fetched on page load.

GPT 5.5 LiveBench category scores
CategoryScore
Reasoning89.654
Coding82.149
Agentic Coding53.990
Mathematics95.857
Data Analysis81.576
Language87.363
Instruction Following70.729

Benchmarks measure selected evaluation tasks and do not guarantee performance for every prompt or workflow.

FAQ

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