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GPT Luna

#23of 28 · general

GPT-6 Luna

1.1Mcontext
$0.10 / $0.50per 1M in / out
2026-09-22released
2026-05-18knowledge cutoff
50100Coding 28 · #20 of 28Agents 18 · #25 of 29Cyber 45 · #1 of 24Engineering 15 · #21 of 26Math 42 · #12 of 26Health 20 · #20 of 24Legal 19 · #24 of 27Professional 18 · #24 of 28Writing 3 · #20 of 21 · one sourceInstruct 6 · #24 of 25Hallucination 40 · #12 of 26Multimodal 35 · #13 of 24
Coding28#20
Agents18#25
Cyber45#1
Engineering15#21
Math42#12
Health20#20
Legal19#24
Professional18#24
Writing3#20
Instruct6#24
Hallucination40#12
Multimodal35#13

History

ECI156157158159160161Jul 2026Sep 2026GPT-5.6 Luna · $0.2/M in · 2026-07-09 · still served · Epoch Capabilities Index 156.5 ECI pointsGPT-5.6 Terra · $2/M in · 2026-07-09 · still served · Epoch Capabilities Index 160.1 ECI pointsGPT-6 Luna · $0.1/M in · 2026-09-22 · still served · Epoch Capabilities Index 156.8 ECI points5.6 Luna5.6 Terra
  • OpenAI
  • older → newer
$ / M input tokens3 of 176 priced models · price is a third-party claim, not a vendor quote

Usage

1.2TtokensSep 23 – Oct 6▼ 8% 7d
300B600B900B1.2TSep 23Sep 26Sep 29Oct 2Oct 5Oct 6

Geography

United States14.0%
Brazil6.5%
Germany5.9%
Spain5.5%
Japan4.6%
India3.4%
France3.3%
Singapore2.9%
Colombia2.8%
Argentina2.7%

Effort

GPT-6 Luna
% of best score02550751000.1×0.2×0.5×1×× the best effort’s cost · log scaleNoneLowMedHighXhighMax

Measured

≈ imputed · amber dot = lab-self-reported among the sources
GPQA Diamond90.5%#16Epoch AI
HLE38.5%#21Artificial Analysis
LiveBench72.0%#17LiveBench
SciCode54.6%#17Artificial AnalysisEpoch AI
CritPt19.4%#13Artificial AnalysisEpoch AI
Terminal-Bench73.0%#9Vals.ai
APEX Agents44.3%#17Epoch AI
GDPval46.6%#20Artificial Analysis
Arena1443#18Arena
AA Index38.1#20Artificial Analysis
Vals Index51.2#17Vals.ai
Epoch Capabilities Index156.8#11Epoch AI

Neighbors

Step→ weaker math · pricierMiMo Flash→ weaker multimodal · less factualGLM Flash→ near-twinMiniMax Flash→ stronger agentDeepSeek Pro→ follows instructions better · pricier