The Model Index
Up to four models

GPT-6 Astra vs Mistral Large 4

On the index (GPT-4 = 100), GPT-6 Astra scores 199 and Mistral Large 4 160. 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 Astra
Presets
GPT-6 Astra
199182–215
WeightsClosed
ReleasedSep 2026
Price in / out$10 / $50
Context1.05M
Core tests taken7 of 9
Mistral Large 4
160144–177
WeightsOpen
ReleasedOct 2026
Price in / out$1.36 / $4.18
Context1.05M
Core tests taken4 of 9

GPT-6 Astra leads Mistral Large 4 by 38 points, ahead on 3 of 4 shared core tests, at 9.7× the price.

Test by testthird-party results

GPT-6 AstraMistral Large 4
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 MigrationIOIIOIVibe Code Bench 1-100Vibe Code Bench 1-100Vibe Code Bench v1.1Vibe Code Bench v1.1AGENTSBioMysteryBenchBioMysteryBenchDTBenchDTBenchFurniture assemblyFurniture assemblyLMCALMCAMystery game puzzlesMystery game puzzlesPROFESSIONAL WORKFinance Agent (v2)Finance Agent (v2)EMBEMBHLAB-Vals-1.1HLAB-Vals-1.1Legal Research BenchLegal Research BenchMedCodeMedCodeMedScribeMedScribeTax Agent BenchTax Agent BenchNOVEL PROBLEMSMysteryMechanismMysteryMechanism
Every result as a table
TestGPT-6 AstraMistral Large 4
Reasoning & knowledge
GPQA Diamond (Epoch AI)95.8%88.1%
SimpleQA Verified75.6%20.0%
Maths
FrontierMath (tiers 1-3)93.7%58.6%
AIME-style maths (OTIS mock)100.0%98.3%
ProofBench v1.199.0%10.0%
Chess puzzles74.0%33.0%
FrontierMath (tier 4)97.6%26.8%
Coding
Terminal-Bench 4.059.6%27.8%
Code Migration67.7%30.6%
IOI100.0%45.3%
Vibe Code Bench 1-10027.6%14.3%
Vibe Code Bench v1.189.6%78.4%
Agents
BioMysteryBench79.3%67.0%
DTBench97.3%88.2%
Furniture assembly80.0%20.8%
LMCA64.4%35.8%
Mystery game puzzles84.0%17.0%
Professional work
Finance Agent (v2)53.5%54.7%
EMB71.7%56.2%
HLAB-Vals-1.17.1%17.5%
Legal Research Bench39.4%31.7%
MedCode48.5%40.7%
MedScribe87.9%80.4%
Tax Agent Bench20.7%30.4%
Novel problems
MysteryMechanism53.1%12.2%

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

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