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OpenAI: GPT-5.5 Pro

OpenAI·Released 2026-04-24
1.1M ctxMultimodal
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About

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...

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Pricing

Input

$30.00

per 1M tokens

Output

$180.00

per 1M tokens

Blended

$67.50

per 1M tokens

Cheaper than 0% of models. Median price is $0.54/1M tokens.

Cost Calculator

Tokens per day1M
100K100M

Daily

$67.50

Monthly

$2025.00

vs. Similar Models

OpenAI: GPT-5.4 Pro
$67.500%
Anthropic: Claude Opus 4.6 (Fast)
$60.00-11%
Anthropic: Claude Opus 4.7 (Fast)
$60.00-11%
OpenAI: GPT-5.2 Pro
$57.75-14%

Performance

Context Window

1.1M

tokens

Larger than 97% of models

Max Output

128K

tokens

12% of context

Context Window Comparison

OpenAI: GPT-5.5
1.1MSame
OpenAI: GPT-5.4
1.1MSame
OpenAI GPT Latest
1.1MSame

Quick Compare

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Compare all 7 models