The Model Index
Up to four models

GPT-6.1 Sol vs Gemini 3.8 Flash

On the index (GPT-4 = 100), GPT-6.1 Sol scores 196 and Gemini 3.8 Flash 175. Side by side on the same third-party tests, with price and context. The link in your address bar shares this exact comparison.

Next to GPT-6.1 Sol
Presets
GPT-6.1 Sol
196180–212
WeightsClosed
ReleasedSep 2026
Price in / out$2.0 / $10
Context1.05M
Core tests taken6 of 9
Gemini 3.8 Flash
175159–191
WeightsClosed
ReleasedSep 2026
Price in / out$0.82 / $4.13
Context1.05M
Core tests taken7 of 9

GPT-6.1 Sol leads Gemini 3.8 Flash by 21 points, ahead on 3 of 6 shared core tests, at 2.4× the price.

Test by testthird-party results

GPT-6.1 SolGemini 3.8 Flash
0%25%50%75%100%REASONING & KNOWLEDGEGPQA Diamond (Epoch AI)GPQA Diamond (Epoch AI)SimpleQA VerifiedSimpleQA VerifiedMATHSFrontierMath (tiers 1-3)FrontierMath (tiers 1-3)AIME-style maths (OTIS mock)AIME-style maths (OTIS mock)ProofBench v1.1ProofBench v1.1Chess puzzlesChess puzzlesFrontierMath (tier 4)FrontierMath (tier 4)CODINGTerminal-Bench 4.0Terminal-Bench 4.0Code MigrationCode MigrationCyberBench v1.1CyberBench v1.1IOIIOIProgramBenchProgramBenchVibe Code Bench v1.1Vibe Code Bench v1.1AGENTSAPEX-AgentsAPEX-AgentsBioMysteryBenchBioMysteryBenchSRE BenchSRE BenchTerminal-Bench-ScienceTerminal-Bench-ScienceDTBenchDTBenchFurniture assemblyFurniture assemblyLMCALMCAMystery game puzzlesMystery game puzzlesPROFESSIONAL WORKFinance Agent (v2)Finance Agent (v2)EMBEMBHLAB-Vals-1.1HLAB-Vals-1.1Legal Research BenchLegal Research BenchMedCodeMedCodeMedScribeMedScribePublic Benefits Bench v1.1Public Benefits Bench v1.1SAGESAGETax Agent BenchTax Agent BenchNOVEL PROBLEMSARC-AGI-2ARC-AGI-2ARC-AGI-1ARC-AGI-1ARC-AGI-3ARC-AGI-3MysteryMechanismMysteryMechanism
Every result as a table
TestGPT-6.1 SolGemini 3.8 Flash
Reasoning & knowledge
GPQA Diamond (Epoch AI)95.4%95.4%
SimpleQA Verified73.9%69.7%
Maths
FrontierMath (tiers 1-3)93.7%68.4%
AIME-style maths (OTIS mock)100.0%98.9%
ProofBench v1.199.0%48.0%
Chess puzzles68.0%58.0%
FrontierMath (tier 4)100.0%21.9%
Coding
Terminal-Bench 4.055.0%19.7%
Code Migration65.1%36.5%
CyberBench v1.139.3%43.8%
IOI96.9%56.9%
ProgramBench3.0%1.0%
Vibe Code Bench v1.188.9%78.6%
Agents
APEX-Agents60.0%64.3%
BioMysteryBench79.6%62.2%
SRE Bench50.8%11.1%
Terminal-Bench-Science52.9%8.6%
DTBench96.5%95.7%
Furniture assembly80.0%31.7%
LMCA62.8%52.9%
Mystery game puzzles80.0%47.0%
Professional work
Finance Agent (v2)52.0%61.4%
EMB70.8%72.2%
HLAB-Vals-1.16.3%12.1%
Legal Research Bench38.5%38.9%
MedCode48.8%48.1%
MedScribe86.5%84.5%
Public Benefits Bench v1.159.3%65.3%
SAGE46.5%35.1%
Tax Agent Bench21.8%32.1%
Novel problems
ARC-AGI-294.2%89.2%
ARC-AGI-198.5%98.5%
ARC-AGI-352.7%10.4%
MysteryMechanism46.4%36.5%

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

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