GPT-5.5

OpenAI·US·Released 2026-04-23
ClosedGeneral LLMReasoningTool useVision

OpenAI's GPT-5.5 is a frontier model supporting text, image, and PDF inputs, excelling at coding, computer use, research, and knowledge work.

1Mcontext
$5 / $30per 1M tokens (in / out)
—parameters
134stories in our feed

Specs

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Context window1M
Max output125K
Parameters—
Knowledge cutoff2025-12-01
LicenceProprietary
Commercial useAPI only
InputText · Image · PDF
OutputText
Familygpt

API price

USD per 1M tokens
Input$5
Output$30
Cached input$0.5

No price change recorded since we started tracking.

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2026-08-28
2026-08-26