gpt-5.5-pro

Common Name: GPT-5.5 Pro

OpenAI
Released on Apr 24 12:00 AMSupportedTool InvocationSupportedReasoning
CompareTry in Chat

GPT-5.5 Pro is the higher-accuracy GPT-5.5 variant for harder questions, deeper research, and more demanding end-to-end tasks.

Specifications

Context
1050K
Maximum Output
128K
Inputtext, image
Outputtext

Performance (7-day Average)

Collecting…
Collecting…
Collecting…

Pricing

Standard
Short Context (≤ 272K tokens)
Input$33.00/MTokens
Output$198.00/MTokens
Long Context (> 272K tokens)
Input$66.00/MTokens
Output$297.00/MTokens
Batch
Short Context (≤ 272K tokens)
Input$16.50/MTokens
Output$99.00/MTokens
Long Context (> 272K tokens)

Not Supported

Performance Metrics (24h)

Similar Models

$16.50/$132.00/M
ctx400Kmax272Kavailtps
InOutCap

GPT-5 pro uses more compute to think harder and provide consistently better answers.

$16.50/$132.00/M
ctx400Kmax272Kavailtps
InOutCap

GPT-5 pro uses more compute to think harder and provide consistently better answers.

$22.00/$88.00/M
ctx200Kmax100Kavailtps
InOutCap

Snapshot of o3-pro from June 10, 2025. Our most capable reasoning model for the hardest problems.

$22.00/$88.00/M
ctx200Kmax100Kavailtps
InOutCap

Our most capable reasoning model, using more compute for the best possible answers on the hardest problems.