GPT-5.5 Pro vs GPT-5.4 mini

Best cell per row highlighted. Null means undisclosed — never counted as zero.

OpenAI
GPT-5.5 ProGA
7.7
AI Panel
OpenAI
GPT-5.4 miniGA
9.0
AI Panel

Identity & lifecycle

ProviderOpenAIOpenAI
Family / tierGPT-5 · ProGPT-5 · mini
StatusGAGA
Released2026-04-232026-03-16
Knowledge cutoff2025-122025-08

Architecture & context

Context window1.1M400K
Max output tokens128K128K
Input modalitiestext, imagetext, image
Reasoning modealwaysoptional
Open weightsNoNo

Pricing (per Mtok)

Input$30$0.75
Output$180$4.5
Cached input$0.075
Batch input$15$0.375
Free tierNoNo

Speed

Output speed (tok/s)180
Time to first token (s)0.5
Latency tierslowfast

Trust & deployment

Trains on inputsNoNo
LicenseProprietaryProprietary
CloudsAzure OpenAI, Azure AI FoundryAzure OpenAI, Azure AI Foundry
ComplianceSOC2, GDPR, CCPA, HIPAASOC2, GDPR, CCPA, HIPAA

AI Panel scoring

Unified score7.79
Decision Maker89
Domain Strategist7.59
Finance Lead610
Domain Practitioner79
Power User88
Skeptic78.5
Value score59.8

Benchmarks

GPQA Diamond94
SWE-bench Verified89

Scores link to their sources. Missing cells mean the vendor hasn't disclosed a result — honesty over padding.