GPT-5.5 Pro (Xhigh)
OpenAIGPTProprietary
Description
GPT-5.5 Pro is the Pro variant of GPT-5.5, designed for the hardest questions and highest-accuracy work. It scales reasoning further than GPT-5.5 with significantly more comprehensive, well-structured, and accurate responses, with especially strong performance in business, legal, education, science, and data analysis. Priced at $30/1M input and $180/1M output tokens with a 1M context window.
Release Date
2026-04-23
Parameters
—
Context Length
1.1M
Modalities
image, pdf, text
Capability Radar
60
general
0
coding
50
reasoning
43
scienceest.
60
agents
85
multimodal
Science is estimated from LLM Stats science scores or reasoning when no dedicated science benchmarks are available.
Rankings
No ranking data available
Benchmark Scores (LLM Stats)
(LLM Stats (zeroeval))Agents
GeneBench
33.2%SR
General
GDPval-MM
82.3%SR
Math
FrontierMath
39.6%SR
Reasoning
BrowseCompOpenAI (2025)
90.1%SR
Humanity's Last Exam
57.2%SR
AA Evaluation Indices
(Artificial Analysis)No AA evaluation data available
LLM Stats Category Scores
(LLM Stats (zeroeval))Search90
Multimodal80
Finance80
Reasoning60
General60
Agents60
Vision60
Math50
Science30
Pricing
Input Price$30 / 1M tokens
Output Price$180 / 1M tokens
Blended Price (3:1)$67.5 / 1M tokens
Speed
No speed data available
Provider Price Ranking
Provider Price Ranking
20 providers
Cheapest: PoeMost Expensive: AI/ML API
ProviderInputOutput
1PoeCheapest
$27.2727
$163.6364
2OpenAIPRIMARY
$30
$180
3OpenRouter
$30
$180
4ZenMux
$30
$180
5Kilo Gateway
$30
$180
6Cloudflare AI Gateway
$30
$180
7OpenCode
$30
$180
8AIHubMix
$30
$180
9Requesty
$30
$180
10Vercel AI Gateway
$30
$180
11DevPass (LLM Gateway)
$30
$180
12FastRouter
$30
$180
13OrcaRouter
$30
$180
14Neon
$30
$180
15CrossModel
$30
$180
16Impossibl
$30
$180
17Eden AI
$30
$180
18LLM Gateway
$30
$180
19Opper
$30
$180
20AI/ML API
$31.74
$190.44
Compare pricing across different API providers for this model.