GPT-5.5 Pro

Name: GPT-5.5 Pro
Price: 30 USD
Author: OpenAI

OpenAI·US·Released 2026-04-23

ClosedGeneral LLMReasoningTool useVision

1Mcontext

$30 / $180per 1M tokens (in / out)

—parameters

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Specs

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Context window1M

Max output125K

Parameters—

Knowledge cutoff2025-12-01

LicenceProprietary

Commercial useAPI only

InputText · Image · PDF

OutputText

Familygpt-pro

USD per 1M tokens

Input$30

Output$180

Cached input—

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2026-06-30

2026-06-29