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

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

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

Identity & lifecycle

ProviderOpenAIOpenAIOpenAI
Family / tierGPT-5 · miniGPT-5 · ProGPT-5 · Pro
StatusGAGAGA
Released2026-03-162026-04-232026-04-22
Knowledge cutoff2025-082025-122025-12

Architecture & context

Context window400K1.1M1.1M
Max output tokens128K128K128K
Input modalitiestext, imagetext, imagetext, image
Reasoning modeoptionalalwaysoptional
Open weightsNoNoNo

Pricing (per Mtok)

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

Speed

Output speed (tok/s)18068.7
Time to first token (s)0.564
Latency tierfastslowslow

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 score97.78.7
Decision Maker989
Domain Strategist97.58.8
Finance Lead1067
Domain Practitioner979.2
Power User889
Skeptic8.577.8
Value score9.856.5

Benchmarks

MMLU-Pro92.4
GPQA Diamond9493.6
SWE-bench Verified8988.7
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.