Benchmark Almanac

GPT-6 Luna

GPT-6 Luna ranks first on 4 of the 252 benchmarks with five or more models scored.

OpenAI Released September 22nd, 2026 Compare with others
260
Benchmarks with a score
4
Ranked first, out of five or more models
8
In the top three
OpenAI Sep 2026

GPT-6 Luna

Closed weights

156.4 #36 of 256
Epoch Capabilities Index
Self-Reported Index 157.3 #48 of 404
  • AutomationBench 20.7% #17 /42
  • Agents' Last Exam 25% #16 /31
  • Terminal-Bench 4.0 16.4% #28 /40

Where it ranks

Its best score on each benchmark, and where that ranks among every model with a score there. We rank each model once, at its best setting.

Knowledge and language

BenchmarkScoreRankSource
HLE Extended 53.3% #7 of 31 Official leaderboard
LMArena (Elo) 1,441 #78 of 335 Official leaderboard
FACTS Grounding v2 76.7% #7 of 25 Official leaderboard
BullshitBench V2 59% #37 of 129 Official leaderboard
StudyArena Text 1,243 #30 of 85 Official leaderboard
BullshitBench 40% #39 of 107 Official leaderboard
AA-LCR Extended 68.3% #18 of 49 Official leaderboard
Global MMLU Lite 92% #18 of 43 Official leaderboard
FACTS Search V2 81.4% #10 of 21 Official leaderboard
Internal adversarially-designed factuality evaluations 7.60% #1 of 2 Lab model card
DesignArena ASCII Art 1,161 #39 of 77 Official leaderboard
FACTS Parametric V2 57% #14 of 27 Official leaderboard
FACTS Benchmark Suite 64.8% #12 of 23 Official leaderboard
Opening Lines Arena 1,515 #8 of 15 Official leaderboard
SimpleQA Verified 41.4% #51 of 94 Epoch AI run
Extended NYT Connections 68.7% #60 of 103 Official leaderboard
Factuality Heavy prompts 5.60% #2 of 3 Lab model card
High Stakes factuality prompts 4.50% #2 of 3 Lab model card
Joke Arena 1,486 #18 of 25 Official leaderboard
OpenAI user-flagged hallucination eval 18.7% #3 of 4 Lab model card
ELI5 Arena 1,422 #14 of 18 Official leaderboard
FACTS Multimodal 38.7% #21 of 23 Official leaderboard
Corp Speak Arena 1,218 #22 of 22 Official leaderboard

Math and science

BenchmarkScoreRankSource
OTIS Mock AIME 2024-2025 98.9% #27 of 212 Epoch AI run
GPQA Diamond 90.5% #45 of 229 Epoch AI run
FrontierMath Tiers 1-3 v2 79% #20 of 86 Official leaderboard
DTBench 90.1% #51 of 180 Official leaderboard
FrontierMath Tier 4 v2 56.1% #20 of 68 Official leaderboard
PHYSICS-Verified 82.6% #7 of 19 Official leaderboard
Verifying the Verifiers (Project APE CRED benchmark) 87.5% #9 of 23 Official leaderboard
ProofBench v1.1 64% #21 of 52 Official leaderboard
ARC-AGI-2 59.3% #40 of 98 Official leaderboard
ARC-AGI 86.7% #43 of 95 Official leaderboard
Prophet Arena 85.6 #13 of 24 Official leaderboard
scBench (LatchBio SingleCellBench) 53.9% #17 of 26 Official leaderboard
BixBench3 36.9 #14 of 20 Official leaderboard
LatchBio Capabilities v1.0 37.2% #20 of 27 Official leaderboard
MysteryMechanism 19.4% #27 of 31 Official leaderboard
BioMysteryBench 61.5% #27 of 30 Official leaderboard

Coding

BenchmarkScoreRankSource
DesignArena UI Component 1,292 #26 of 139 Official leaderboard
WebDev Arena 1,582 #23 of 105 arena.ai, via Epoch AI
Vibe Code Bench 81.7% #28 of 120 Official leaderboard
DesignArena SVG 1,238 #25 of 103 Official leaderboard
DesignArena Website 1,269 #37 of 151 Official leaderboard
ALE-Bench 1,791 #36 of 126 Official leaderboard
DesignArena Code 1,262 #44 of 143 Official leaderboard
DesignArena Game Dev 1,254 #44 of 143 Official leaderboard
Code Arena 1,577 #40 of 128 Official leaderboard
OpenDesign Arena 83.1 #7 of 21 Official leaderboard
Code Migration 42.5% #28 of 78 Official leaderboard
DAXBench v2 83% #17 of 47 Official leaderboard
Brokk Power Ranking 10.7 #7 of 19 Official leaderboard
DesignArena Android (Kotlin) 1,181 #20 of 46 Official leaderboard
Image-to-WebDev Arena 1,566 #24 of 55 Official leaderboard
DesignArena 3D Design 1,198 #60 of 136 Official leaderboard
IOI v2 (Vals) 55.6% #22 of 45 Official leaderboard
DesignArena Data Visualization 1,209 #61 of 118 Official leaderboard
SWE Atlas Codebase QnA Extended 15.3% #20 of 38 Official leaderboard
DeepSWE 66.6% #30 of 56 Lab model card
DesignArena Full Stack 1,140 #29 of 49 Official leaderboard
FrontierCode 2.0 22.7% #19 of 32 Official leaderboard
APEX-SWE 38.8% #39 of 65 Official leaderboard
DesignArena Agentic Overall 1,146 #46 of 74 Official leaderboard
Code Migration v1.1 46.7% #19 of 30 Official leaderboard
DesignArena Frontend Web App 1,162 #34 of 53 Official leaderboard
DesignArena Image to HTML 1,185 #33 of 51 Official leaderboard
WeirdML v3 7.87% #18 of 27 Official leaderboard
SWE-bench Verified Extended 39.3% #31 of 44 Official leaderboard
Next.js Agent Evals 86% #10 of 14 Official leaderboard
SWE-Together 59.6% #16 of 22 Official leaderboard
MacroscopeBench 72.5% #12 of 16 Official leaderboard
DesignArena React Native 1,119 #43 of 56 Official leaderboard
SWE Atlas v1.1 50.8% #22 of 28 Official leaderboard
Real-SWE 1.1 10.4% #12 of 15 Official leaderboard
Floorplan Arena 1,380 #9 of 11 Official leaderboard
MirrorCode 26.7% #32 of 39 Epoch AI run
FDE-Gym -0.12 #10 of 12 Official leaderboard
Chart Arena 1,415 #13 of 15 Official leaderboard
Android Bench 2.0 10.7% #15 of 17 Official leaderboard
SWE-Marathon v1.1 28.1% #18 of 20 Official leaderboard
FrontierCode 1.1 42.4% #12 of 13 Lab model card
Internal Research Debugging Evaluation 46.6% #6 of 6 Lab model card
KernelGen 1P 21.8% #4 of 4 Lab model card

Agents and tools

BenchmarkScoreRankSource
LLM Chess 1,219 #15 of 123 Official leaderboard
BrowseComp Extended 47.2% #9 of 42 Official leaderboard
LisanBench 3863.7 #30 of 133 Official leaderboard
LMArena Search Arena 1,211 #12 of 37 Official leaderboard
o11y-bench 84.4% #8 of 22 Official leaderboard
AutomationBench 20.7% #17 of 42 Official leaderboard
RuneBench 5.13 #31 of 76 Official leaderboard
CivBench 1,510 #8 of 19 Official leaderboard
Agent Arena 1.56% #26 of 56 Official leaderboard
Terminal-Bench 2.1 Extended 33.3% #22 of 44 Official leaderboard
AdaExploreBench 51.5% #4 of 8 Official leaderboard
Chess Puzzles 36% #47 of 93 Epoch AI run
ARC-AGI-3 0.59% #18 of 27 Official leaderboard
OSWorld 2.0 52.7% #13 of 19 Lab model card
Terminal-Bench 4.0 16.4% #28 of 40 Official leaderboard
Hermes Bench 70.5% #12 of 17 Official leaderboard
Terminal-Bench 4.1 15.2% #31 of 43 Official leaderboard
Game Arena Word Art 254 #29 of 39 Official leaderboard
Game Arena Word Association 117 #30 of 40 Official leaderboard
DuelLab GameBench 2 55.9 #43 of 57 Official leaderboard
Game Arena Dark Hex 137 #31 of 41 Official leaderboard
Game Arena Checkers 639 #32 of 41 Official leaderboard
Gym-Anything-RT 1.00% #4 of 5 Official leaderboard
Web Context (Nimble) 67.9% #9 of 11 Official leaderboard
Game Arena Bargaining 142 #32 of 39 Official leaderboard
Game Arena Go 474 #32 of 39 Official leaderboard
Game Arena Reversi 181 #32 of 39 Official leaderboard
Collaborative Intelligence Benchmark 43.4% #15 of 18 Official leaderboard
Game Arena Dots and Boxes 583 #34 of 40 Official leaderboard
Game Arena Chess 450 #36 of 42 Official leaderboard
Kaggle Game Arena 171 #36 of 42 Official leaderboard
Cresta-Bench 32.7% #12 of 14 Official leaderboard
Game Arena Clobber 66 #34 of 39 Official leaderboard
Game Arena Lines of Action 196 #34 of 39 Official leaderboard
BU Bench V2.1 69.2 #14 of 16 Official leaderboard
SpireClimb StS1 A20 Heart 0% #8 of 9 Official leaderboard
Game Arena Coin Game 177 #36 of 39 Official leaderboard
Game Arena Ultimate Tic-Tac-Toe 25 #36 of 39 Official leaderboard
Game Arena Four in a Row 128 #40 of 43 Official leaderboard
Mystery Game Puzzles 7.00% #79 of 84 Epoch AI run
Game Arena Nine Men's Morris 0 #39 of 39 Official leaderboard
SpireClimb 0% #9 of 9 Epoch AI run
SpireClimb StS2 A10 0% #9 of 9 Official leaderboard
StarSkirmish Bench 13.1% #9 of 9 Official leaderboard

Professional work

BenchmarkScoreRankSource
PolicyBench 91.5% #7 of 50 Official leaderboard
Excel Modeling Benchmark 68.5% #16 of 76 Official leaderboard
HealthBench Consensus 95.9% #5 of 17 Lab model card
Vals Index v2 58.5% #20 of 65 Official leaderboard
MedCode 44.7% #39 of 96 Official leaderboard
MedScribe 83.7% #41 of 97 Official leaderboard
Excel Modeling Benchmark v1.1 70% #19 of 42 Official leaderboard
HW-Bench 30% #7 of 15 Official leaderboard
HealthBench Professional 60.8% #13 of 26 Lab model card
Agents' Last Exam 25% #16 of 31 Official leaderboard
Harvey LAB (Legal Agent Benchmark) 2.92% #44 of 80 Official leaderboard
Vals Finance Agent v2 49.9% #45 of 80 Official leaderboard
DAYJOB: Finance 6.80% #22 of 39 Official leaderboard
EnterpriseBench: CoreCraft 43.1% #29 of 51 Official leaderboard
Vals Index v2.1 51.2% #28 of 49 Official leaderboard
FoodTruck Bench $17,211 #34 of 59 Official leaderboard
Tuesday Work Index 45.3 #26 of 44 Official leaderboard
GDPx 5.11% #12 of 20 Official leaderboard
Legal Research Bench 30.3% #57 of 93 Official leaderboard
APEX-1 62% #44 of 71 Official leaderboard
TaxCalcBench v2 36% #20 of 32 Official leaderboard
PRBench 42.9% #31 of 48 Official leaderboard
Bedside Bench 87.2% #11 of 17 Official leaderboard
CAD Arena 0.30 #8 of 12 Official leaderboard
Tax Agent Bench 19.9% #57 of 84 Official leaderboard
HealthBench Hard 31.4% #15 of 21 Lab model card
APEX-Agents 44.3% #45 of 61 Collected by Epoch AI, source not named
GDP.xlsx 14.9% #15 of 20 Official leaderboard
APEX-Agents 1.1 59% #49 of 65 Official leaderboard
APEX-Accounting 53.9% #37 of 49 Official leaderboard
Public Benefits Bench 57.6% #38 of 50 Official leaderboard
DeepFinance 26.4% #18 of 23 Official leaderboard
DAYJOB: Healthcare 1.20% #29 of 37 Official leaderboard
Clipping Bench $374 #15 of 19 Official leaderboard
Vals Finance Index 53% #32 of 40 Official leaderboard
RCM-Bench-1 85.8% #16 of 20 Official leaderboard
Vals Index v2.2 52.3% #30 of 37 Official leaderboard
YC-Bench $331,093 #48 of 59 Official leaderboard
Vals Finance Agent v2.1 56.8% #33 of 40 Official leaderboard
DesignArena PDF 1,120 #31 of 37 Official leaderboard
Immigration Bench 62.5% #21 of 25 Official leaderboard
EEBench 31.1% #26 of 30 Official leaderboard
Thrive Holdings helpdesk ticket resolution benchmark 34.6% #13 of 15 Official leaderboard
Harvey LAB v1.1 (HLAB-Vals-1.1) 4.17% #33 of 38 Official leaderboard
Vals Legal Index 62.2% #33 of 38 Official leaderboard
HealthBench 54.5% #27 of 31 Lab model card
Short Form Bench $2,107 #8 of 9 Official leaderboard
MedXpertQA MM Extended 46.4% #37 of 41 Official leaderboard
Holdings-IndividualTaxBench 67.6% #12 of 13 Official leaderboard
GDPval Extended 0% #43 of 43 Official leaderboard
DesignArena Spreadsheet 947 #35 of 35 Official leaderboard
Legora BAR 88.0 #17 of 17 Official leaderboard

Vision, audio and robotics

BenchmarkScoreRankSource
BVB 70.3 #11 of 45 Official leaderboard
ZeroBench 20% #22 of 76 Official leaderboard
ExtractBench 91% #9 of 27 Official leaderboard
VoxelBench 1,818 #20 of 56 Official leaderboard
Vision Arena 1,235 #56 of 136 Official leaderboard
Chartography 29.1% #18 of 43 Official leaderboard
Furniture Assembly Benchmark 44.2% #16 of 35 Official leaderboard
ParseBench 64.1% #21 of 44 Official leaderboard
MMMU-Pro Extended 34.8% #19 of 38 Official leaderboard
SplatBench 8.60 #4 of 8 Official leaderboard
Code2Video-Compass 7.40 #8 of 15 Official leaderboard
Blueprint-Bench 2 31.2% #21 of 38 Official leaderboard
GlobeBench 17.8% #12 of 19 Official leaderboard
Frontier3DBench 48.6 #8 of 11 Official leaderboard
Code2Video Benchmark 1,469 #14 of 19 Official leaderboard
CharXiv Extended 76.4% #30 of 38 Official leaderboard
vCX Benchmark 80.7% #36 of 42 Official leaderboard
DesignArena Code to Video 1,028 #27 of 29 Official leaderboard
Humanity's Sixth Sense 21% #34 of 34 Official leaderboard
1H-VideoQA 57.4% #20 of 20 Official leaderboard
ExtractBench Pro 0% #7 of 7 Official leaderboard
ShadowBench 35.1 #6 of 6 Official leaderboard

Safety and security

BenchmarkScoreRankSource
Tacit Knowledge and Troubleshooting 94% #1 of 30 Lab model card
FORTRESS 10.8% #6 of 73 Official leaderboard
CyberBench v1.1 (Vals) 76.3% #5 of 44 Official leaderboard
Respecting Warnings 11.8% #1 of 7 Lab model card
Phage-plasmid Co-evolution 10.7 #1 of 6 Lab model card
Unintended Engagement with External Agent Messages 0% #1 of 6 Lab model card
BioTIER Refuse 79.5% #18 of 69 Official leaderboard
AAV Capsid Packaging Prediction (OpenAI) 0.53 #2 of 7 Lab model card
Declining to Exploit a Honeypot During Difficult ExploitGym Problems 0% #2 of 7 Lab model card
nocot-bench (NCRI) 77.3 #66 of 185 Official leaderboard
TroubleshootingBench 41.5% #8 of 20 Lab model card
BioSecBench-Refusal 37.5% #10 of 22 Official leaderboard
DeepsecBench 21.0 #14 of 29 Official leaderboard
Coding Deception 2.81% #3 of 6 Lab model card
OncologyBench 16% #17 of 30 Official leaderboard
Instruction hierarchy attacks 99.97% #4 of 7 Lab model card
Prompt injection robustness 98.6% #4 of 7 Lab model card
Respecting Auto-Review 0% #4 of 7 Lab model card
Suicide Memory Bench 0.66 #7 of 12 Official leaderboard
ProtocolQA Open-Ended 34.9% #16 of 27 Lab model card
Blocker Deception 11.1% #3 of 5 Lab model card
SRE-Bench 2.67% #22 of 35 Official leaderboard
TxBench-Oligo-Discovery 33.6% #20 of 30 Official leaderboard
Broken Search Tool 7.83% #6 of 9 Lab model card
MetagenomicsBench 31% #18 of 26 Official leaderboard
BioTIER Permit 98.9% #48 of 69 Official leaderboard
TxBench-Antibody-Discovery 34% #21 of 30 Official leaderboard
BioSecBench-Surveillance 41.5% #19 of 27 Official leaderboard
TxBench-Preclinical-Pharmacology 44.3% #22 of 30 Official leaderboard
scBench-Long 11.9% #20 of 27 Official leaderboard
MentalHealthBench 51.7% #3 of 4 Lab model card
Sandbox Bench 4.50% #3 of 4 Lab model card
ExploitBench 46.2% #16 of 21 Lab model card
Multimodal Troubleshooting Virology 49.1% #21 of 27 Lab model card
SpatialBench-Long 23.2% #21 of 27 Official leaderboard
dfbench 45.7% #14 of 18 Official leaderboard
DistressBench 66.7% #34 of 42 Official leaderboard
EpiBench 19.2% #22 of 27 Official leaderboard
BioSimBench 0.12 #10 of 12 Official leaderboard
IPI Bench 31.8% #5 of 6 Official leaderboard
VariantBench 27.7% #23 of 27 Official leaderboard
SEC-bench Pro 51.8% #10 of 11 Lab model card
BioSecBench-Function 27.3% #25 of 27 Official leaderboard
ExploitGym 11.6% #14 of 15 Lab model card
SecIT Bench 58% #26 of 26 Official leaderboard
Coronavirus-ACE2 Cell-Entry Screen 0.37 #6 of 6 Lab model card
SHP2 Protein Function Prediction 0.21 #6 of 6 Lab model card
ExploitBench - Internal Port 0% #5 of 5 Lab model card

Other

BenchmarkScoreRankSource
ACCoRD 72.1 #37 of 152 Official leaderboard
JevBench 98.4% #1 of 4 Official leaderboard
LMCA 44.5% #44 of 147 Official leaderboard
Conceptual Reasoning Index 57.8 #46 of 151 Official leaderboard
SAGE (Vals) 48.1% #28 of 81 Official leaderboard
Political Science LLM Benchmark 66.6% #21 of 42 Official leaderboard
Xbench 28.9 #10 of 17 Official leaderboard
SAGE v1.1 (Vals) 83.4% #21 of 29 Official leaderboard
LiveBench 60.4% #23 of 31 Official leaderboard
Hermes Index 33.9 #14 of 17 Official leaderboard
Vals Science Index 28.4% #22 of 25 Official leaderboard

Its lab's numbers put it at 157.3, in line with its ECI

The Self-Reported Index fits one score to the 9 capability results OpenAI reported for this model, on the scale of the Epoch Capabilities Index. Labs choose which benchmarks to show and how to run them, so read it as the lab's claim, not an independent measurement. The 90% interval runs from 152.6 to 162.1. How we compute it.

Its lab's numbers next to 2 leaderboards

Where the benchmark's own leaderboard, or Epoch AI's run, also has this model. Gaps mostly come from different harnesses, effort levels and task subsets. Every pair.

Benchmark Lab says Board says Gap
Agents' Last Exam 50.9% Agents' Last Exam (GPT-6 Luna max) 25% Leaderboard, max, codex +26 pts
AutomationBench 20.7% AutomationBench 1.0.6 (GPT-6 Luna max) 20.7% Leaderboard, max Same

OpenAI's models over time

OpenAI's models in color, against every other model on the Epoch Capabilities Index, by release date.

50 100 150 2023 2024 2025 2026 2027 GPT-6.1 Terra GPT-6 Luna GPT-5.4 Mini GPT-5.2 Pro GPT-5 GPT-5 nano GPT-4.1 nano 50 100 150 2023 2024 2025 2026 2027 GPT-6.1 Terra GPT-6 Luna

Source: Epoch Capabilities Index, Epoch AI (CC BY 4.0)

Its launch post

The benchmarks the lab chose to headline, with the scores it gave.

Its system cards

Every result in the longer documents the lab published with it. 33 of them aren't in the launch post.

Cyber risk

Cyber risk