GPT-5.5 vs GPT-5.5 Pro vs GPT-5.4 mini

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

OpenAI
GPT-5.5GA
8.7
AI Panel
OpenAI
GPT-5.5 ProGA
7.7
AI Panel
OpenAI
GPT-5.4 miniGA
9.0
AI Panel

Identity & lifecycle

ProviderOpenAIOpenAIOpenAI
Family / tierGPT-5 · ProGPT-5 · ProGPT-5 · mini
StatusGAGAGA
Released2026-04-222026-04-232026-03-16
Knowledge cutoff2025-122025-122025-08

Architecture & context

Context window1.1M1.1M400K
Max output tokens128K128K128K
Input modalitiestext, imagetext, imagetext, image
Reasoning modeoptionalalwaysoptional
Open weightsNoNoNo

Pricing (per Mtok)

Input$5$30$0.75
Output$30$180$4.5
Cached input$0.5$0.075
Batch input$2.5$15$0.375
Free tierNoNoNo

Speed

Output speed (tok/s)68.7180
Time to first token (s)640.5
Latency tierslowslowfast

Trust & deployment

Trains on inputsNoNoNo
LicenseProprietaryProprietaryProprietary
CloudsAzure OpenAI, Azure AI FoundryAzure OpenAI, Azure AI FoundryAzure OpenAI, Azure AI Foundry
ComplianceSOC2, GDPR, CCPA, HIPAASOC2, GDPR, CCPA, HIPAASOC2, GDPR, CCPA, HIPAA

AI Panel scoring

Unified score8.77.79
Decision Maker989
Domain Strategist8.87.59
Finance Lead7610
Domain Practitioner9.279
Power User988
Skeptic7.878.5
Value score6.559.8

Benchmarks

MMLU-Pro92.4
GPQA Diamond93.694
SWE-bench Verified88.789
MMMU81.2
TAU-bench98
Terminal-Bench82.7
MRCR Long Context74
Humanity's Last Exam41.4
LMArena Elo1476
Artificial Analysis Index60

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