GPT-5.6 Sol vs GPT-6.1 Sol vs GPT-6 Sol

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

OpenAI
GPT-5.6 SolGA
8.8
AI Panel
OpenAI
GPT-6.1 SolGA
9.5
AI Panel
OpenAI
GPT-6 SolGA
9.0
AI Panel

Identity & lifecycle

ProviderOpenAIOpenAIOpenAI
Family / tierGPT-5 · ProGPT-6 · ProGPT-6 · Pro
StatusGAGAGA
Released2026-07-092026-09-292026-09-22
Knowledge cutoff2026-022026-042026-04

Architecture & context

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

Pricing (per Mtok)

Input$4$2$2
Output$20$10$10
Cached input$0.4$0.1$0.2
Batch input$2$1$1
Free tier—NoNo

Speed

Output speed (tok/s)—53—
Time to first token (s)—5.5—
Latency tiermediummediummedium

Trust & deployment

Trains on inputsNoNoNo
LicenseProprietaryProprietaryProprietary
CloudsAzure OpenAI, Azure AI Foundry, BedrockAzure OpenAI, Azure AI Foundry, BedrockAzure OpenAI, Azure AI Foundry, Bedrock
ComplianceSOC2, ISO27001, GDPR, CCPA, HIPAASOC2, ISO27001, GDPR, CCPA, HIPAASOC2, ISO27001, GDPR, CCPA, HIPAA

AI Panel scoring

Unified score8.89.59
Decision Maker99.48
Domain Strategist8.497.5
Finance Lead89.58.8
Domain Practitioner9.39.29
Power User98.88.2
Skeptic7.487.4
Value score7.59.59

Benchmarks

GPQA Diamond—95.494.3
Humanity's Last Exam—52.947.9
LMArena Elo1483—1457
LMArena Coding Elo1528—1520
Artificial Analysis Index—5248

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