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Kimi K2.6 vs Kimi K3

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Kimi K2.6Kimi K3
AttributeKimi K2.6Moonshot · 12 in the newsKimi K3Moonshot · 35 in the news
Scores
Intelligence (ECI)151157
Coding7199
Math7081
Reasoning & Knowledge6078
Agentic & Tools6284
Specifications
DeveloperMoonshotMoonshot
FamilyKimiKimi
ReleasedApr 20, 2026Jul 16, 2026
Parameters1T2.8T
AvailabilityOpen weights (unrestricted)Open weights (non-commercial)
Context window262K1M
Price — $/M input$0.70$2.80
Price — $/M output$3.50$14.00
Inputstext, imagetext, image, video
Outputstexttext
Benchmarks
AIME 2024/202596%97%
APEX19%39%
FrontierMath39%
FrontierMath Tier 415%
GPQA Diamond91%93%
Humanity's Last Exam38%47%
SciCode54%59%
SimpleQA Verified39%43%
SWE-bench Verified77%
WebDev Arena15261682
WeirdML56%83%
τ²-bench96%
ARC-AGI95%
ARC-AGI-260%

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.