Models / OpenAI

GPT-5.5 Pro

GPT 5 · Released 2026-04-23

OpenAI's premium GPT-5.5 tier. Responses API only — higher reasoning ceiling than standard GPT-5.5.

OpenAI Pro-tier pick when accuracy matters more than latency — legal, finance, and multi-pass research workflows.

Composite41
Context1M
Input / 1M$30
Output / 1M$180
Knowledge cutoff2025-12-01
Statussolid
Not enough families covered yet.Add more benchmark rows for GPT-5.5 Pro to see the family profile.
Benchmark placements

Where GPT-5.5 Pro places on each public benchmark source that publishes a row. Rank counts every model with a latest row in the same test — not a universal quality score.

BenchmarkFamilyRankScoreSourceDate
FrontierMathMath#1/ 1552Epoch AI FrontierMath Tiers 1-3 (v2) CSV2026-08-15
CritPtReasoning#2/ 1231Artificial Analysis — CritPt2026-09-01
AA output speedPerformance#165/ 195Artificial Analysis2026-09-28
Family context

The three highest-scoring models with pages in each capability family. Where GPT-5.5 Pro shows up, it's highlighted.

Newest receipts

Benchmark rows added to the public ledger for GPT-5.5 Pro in the last 120 days. Older rows live in the full table below.

3 recent
Family coverage

A high composite that hides a weak family is a trap. These bars surface the families where this model hasn't been publicly tested, and where it leads.

Reasoning31
Math52
Price vs. performance
0255075100$0.10$0.30$1$3$10$30input USD / 1M tokens · log scale →← intelligence

Hover any dot for name, score, and input price. Keyboard: tab through the top twelve, or use the ranking below.

AnthropicOpenAIGoogleAlibabaMetaZhipuxAIDeepSeekMiniMaxXiaomiMoonshotOtherMeituanMistralNVIDIACohere

Full benchmark ledger

Every catalog benchmark for GPT-5.5 Pro. Scores link to the original source; gaps mean no public row exists yet.

3 sourced rows

3 of 13 catalog benchmarks have a sourced row for GPT-5.5 Pro.

Reasoning

Math

Performance

Changelog
  1. Released GPT-5.5 Pro — premium tier, $30/$180, Responses API.
Sources

Questions this model page answers

Every answer below is assembled from the dated fields on this page. Nothing is written separately for search.

What is GPT-5.5 Pro?

GPT-5.5 Pro is a OpenAI model: OpenAI's premium GPT-5.5 tier. Responses API only — higher reasoning ceiling than standard GPT-5.5.

What is GPT-5.5 Pro for?

OpenAI Pro-tier pick when accuracy matters more than latency — legal, finance, and multi-pass research workflows.

What does GPT-5.5 Pro cost?

GPT-5.5 Pro lists $30 input and $180 output per 1M tokens. Pricing last checked 2026-06-10.

How large is the GPT-5.5 Pro context window?

GPT-5.5 Pro publishes a 1M token context window.

What is the VerdictPal status of GPT-5.5 Pro?

GPT-5.5 Pro carries Solid status on the model atlas.

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