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Claude Haiku 5.5 vs Kimi K3

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Claude Haiku 5.5Kimi K3
AttributeClaude Haiku 5.5Anthropic · 2 in the newsKimi K3Moonshot · 47 in the news
Scores
Intelligence (ECI)—158
Coding—94
Math—73
Reasoning & Knowledge—69
Agentic & Tools—66
Specifications
DeveloperAnthropicMoonshot
FamilyClaudeKimi
ReleasedOct 7, 2026Jul 16, 2026
Parameters—2.8T
Availability—Open weights (non-commercial)
Context window1M1M
Price — $/M input$0.10$1.44
Price — $/M output$0.50$9.00
Inputstext, image, filetext, image, video
Outputstexttext
Benchmarks
AIME 2024/2025—97%
APEX—51%
ARC-AGI—95%
ARC-AGI-2—60%
GPQA Diamond—93%
Humanity's Last Exam—47%
SciCode—60%
SimpleBench—61%
SimpleQA Verified—51%
WebDev Arena—1674
WeirdML—83%

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.