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GPT-5.6 Luna Pro (batch) vs Kimi K3

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GPT-5.6 Luna Pro (batch)Kimi K3
AttributeGPT-5.6 Luna Pro (batch)OpenAIKimi K3Moonshot · 35 in the news
Scores
Intelligence (ECI)157
Coding99
Math81
Reasoning & Knowledge78
Agentic & Tools84
Specifications
DeveloperOpenAIMoonshot
FamilyGPTKimi
ReleasedJul 9, 2026Jul 16, 2026
Parameters2.8T
AvailabilityOpen weights (non-commercial)
Context window1.1M1M
Price — $/M input$0.10$2.80
Price — $/M output$0.60$14.00
Inputsfile, image, texttext, image, video
Outputstexttext
Benchmarks
AIME 2024/202597%
APEX39%
ARC-AGI95%
ARC-AGI-260%
GPQA Diamond93%
Humanity's Last Exam47%
SciCode59%
SimpleQA Verified43%
WebDev Arena1682
WeirdML83%

Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.

Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.