The Model Index
Up to four models

GPT-6 vs GPT-6 Astra

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

GPT-6 and GPT-6 Astra are too close to call (0 points apart, within the uncertainty), ahead on 0 of 7 shared core tests.

Test by testthird-party results

GPT-6GPT-6 Astra
0%25%50%75%100%REASONING & KNOWLEDGEGPQA Diamond (Epoch AI)GPQA Diamond (Epoch AI)Humanity's Last ExamHumanity's Last ExamLiveBench Data AnalysisLiveBench Data AnalysisLiveBench IFLiveBench IFLiveBench LanguageLiveBench LanguageLiveBench ReasoningLiveBench ReasoningEBR-benchEBR-benchSimpleQA VerifiedSimpleQA VerifiedMATHSFrontierMath (tiers 1-3)FrontierMath (tiers 1-3)AIME-style maths (OTIS mock)AIME-style maths (OTIS mock)LiveBench MathematicsLiveBench MathematicsProofBench v1.1ProofBench v1.1Chess puzzlesChess puzzlesFrontierMath (tier 4)FrontierMath (tier 4)CODINGTerminal-Bench 4.0Terminal-Bench 4.0LiveBench Agentic CodingLiveBench Agentic CodingLiveBench CodingLiveBench CodingCode MigrationCode MigrationCyberBench v1.1CyberBench v1.1IOIIOIProgramBenchProgramBenchVibe Code Bench 1-100Vibe Code Bench 1-100Vibe Code Bench v1.1Vibe Code Bench v1.1DeepSWEDeepSWEFrontierSWEFrontierSWEGSO-BenchGSO-BenchWeirdMLWeirdMLAGENTSAPEX-AgentsAPEX-AgentsBioMysteryBenchBioMysteryBenchSRE BenchSRE BenchTerminal-Bench-ScienceTerminal-Bench-ScienceBALROGBALROGDTBenchDTBenchFurniture assemblyFurniture assemblyLMCALMCAMystery game puzzlesMystery game puzzlesPROFESSIONAL WORKFinance Agent (v2)Finance Agent (v2)EMBEMBHLAB-Vals-1.1HLAB-Vals-1.1Legal Research BenchLegal Research BenchMedCodeMedCodeMedScribeMedScribeSAGESAGETax Agent BenchTax Agent BenchNOVEL PROBLEMSARC-AGI-2ARC-AGI-2ARC-AGI-1ARC-AGI-1ARC-AGI-3ARC-AGI-3MysteryMechanismMysteryMechanism
Every result as a table
TestGPT-6GPT-6 Astra
Reasoning & knowledge
GPQA Diamond (Epoch AI)95.8%95.8%
Humanity's Last Exam54.8%54.8%
LiveBench Data Analysis83.0%83.0%
LiveBench IF75.6%75.6%
LiveBench Language89.4%89.4%
LiveBench Reasoning92.7%92.7%
EBR-bench76.2%76.2%
SimpleQA Verified75.6%75.6%
Maths
FrontierMath (tiers 1-3)93.7%93.7%
AIME-style maths (OTIS mock)100.0%100.0%
LiveBench Mathematics96.8%96.8%
ProofBench v1.199.0%99.0%
Chess puzzles74.0%74.0%
FrontierMath (tier 4)97.6%97.6%
Coding
Terminal-Bench 4.059.6%59.6%
LiveBench Agentic Coding57.3%57.3%
LiveBench Coding80.4%80.4%
Code Migration67.7%67.7%
CyberBench v1.141.1%41.1%
IOI100.0%100.0%
ProgramBench5.5%5.5%
Vibe Code Bench 1-10027.6%27.6%
Vibe Code Bench v1.189.6%89.6%
DeepSWE74.1%74.1%
FrontierSWE65.5%65.5%
GSO-Bench79.4%79.4%
WeirdML93.3%93.3%
Agents
APEX-Agents64.7%64.7%
BioMysteryBench79.3%79.3%
SRE Bench56.9%56.9%
Terminal-Bench-Science62.9%62.9%
BALROG68.3%68.3%
DTBench97.3%97.3%
Furniture assembly80.0%80.0%
LMCA64.4%64.4%
Mystery game puzzles84.0%84.0%
Professional work
Finance Agent (v2)53.5%53.5%
EMB71.7%71.7%
HLAB-Vals-1.17.1%7.1%
Legal Research Bench39.4%39.4%
MedCode48.5%48.5%
MedScribe87.9%87.9%
SAGE46.4%46.4%
Tax Agent Bench20.7%20.7%
Novel problems
ARC-AGI-295.0%95.0%
ARC-AGI-198.5%98.5%
ARC-AGI-362.7%62.7%
MysteryMechanism53.1%53.1%

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

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