The Model Index
Up to four models

Compare

Side by side on the same third-party tests, with price and context. The link in your address bar shares this exact comparison.

Gemini 4 ArgonClaude Fable 5.1
Next to Gemini 4 Argon
Presets
Gemini 4 Argon
197180–215
WeightsClosed
ReleasedSep 2026
Price in / out–
Context–
Core tests taken3 of 9
Claude Fable 5.1
192175–208
WeightsClosed
ReleasedSep 2026
Price in / out$10 / $50
Context1M
Core tests taken6 of 9

Gemini 4 Argon and Claude Fable 5.1 are too close to call (5 points apart, within the uncertainty), ahead on 2 of 3 shared core tests.

Test by testthird-party results

Gemini 4 ArgonClaude Fable 5.1
0%25%50%75%100%MATHSProofBench v1.1ProofBench v1.1CODINGTerminal-Bench 4.0Terminal-Bench 4.0Code MigrationCode MigrationCyberBench v1.1CyberBench v1.1IOIIOIProgramBenchProgramBenchVibe Code Bench v1.1Vibe Code Bench v1.1FrontierSWEFrontierSWEAGENTSAPEX-AgentsAPEX-AgentsSRE BenchSRE BenchTerminal-Bench ScienceTerminal-Bench SciencePROFESSIONAL WORKFinance Agent (v2)Finance Agent (v2)EMBEMBHarvey's Legal Agent BenchmarkHarvey's Legal Agent BenchmarkLegalBenchLegalBenchLegal Research BenchLegal Research BenchMedCodeMedCodeMedScribeMedScribePublic Benefits Bench v1.1Public Benefits Bench v1.1SAGESAGETax Agent BenchTax Agent BenchNOVEL PROBLEMSMysteryMechanismMysteryMechanism

Tests at least two of these models have taken. Bold rows are the core tests.