Gemini 3.1 Pro vs Claude Opus 4.8

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

Google
Gemini 3.1 Propreview
8.7
AI Panel
Anthropic
Claude Opus 4.8GA
9.2
AI Panel

Identity & lifecycle

ProviderGoogleAnthropic
Family / tierGemini 3 · ProClaude 4 · Opus
StatuspreviewGA
Released2026-02-192026-05-28
Knowledge cutoff2025-012026-01

Architecture & context

Context window1.0M1M
Max output tokens66K128K
Input modalitiestext, image, audio, videotext, image
Reasoning modeoptionalalways
Open weightsNoNo

Pricing (per Mtok)

Input$2$5
Output$12$25
Cached input$0.2$0.5
Batch input$1$2.5
Free tierNoNo

Speed

Output speed (tok/s)142.760
Time to first token (s)30.780.5
Latency tierslowmedium

Trust & deployment

Trains on inputsNoNo
LicenseProprietaryProprietary
CloudsVertex AI, GCPBedrock, Vertex AI, Azure AI Foundry
ComplianceSOC2, HIPAA, GDPR, ISO27001, FedRAMP, CCPASOC2, HIPAA, GDPR, ISO27001

AI Panel scoring

Unified score8.79.2
Decision Maker99
Domain Strategist99
Finance Lead8.58.5
Domain Practitioner8.59.5
Power User8.59
Skeptic7.58
Value score8.58

Benchmarks

MMLU92.6—
GPQA Diamond94.393.6
SWE-bench Verified80.688.6
LiveCodeBench2887—
MMMU80.5—
TAU-bench90.8—
Terminal-Bench68.574.6
MRCR Long Context84.9—
Humanity's Last Exam44.4—
LMArena Elo14871481
LMArena Coding Elo15201533

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