Grok 4 vs Kimi K3
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Kimi K3 by Moonshot AI wins on 6 of 6 benchmarks against Grok 4 by xAI, which leads on 0. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from our benchmark data.
Category-by-Category Breakdown
Coding: In coding, Kimi K3 scores 1377 on Design Arena ELO compared to Grok 4's 1073, while Kimi K3 scores 1352 on Website Arena ELO compared to Grok 4's 1056.
Reasoning: In reasoning, Kimi K3 scores 91.5% on GPQA Diamond compared to Grok 4's 87.0%.
Context: In context, Kimi K3 scores 1.0M on Context Length compared to Grok 4's 256K.
Pricing Comparison
Grok 4 costs $3.0/1M input tokens and $15.0/1M output tokens, while Kimi K3 costs $2.6/1M input and $13.3/1M output. Kimi K3 is the more affordable option for API usage.
Verdict
Kimi K3 leads across the board in affordability, making it the stronger overall choice in this comparison.
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Grok 4 vs Kimi K3 — FAQ
Which is better, Grok 4 or Kimi K3?
Kimi K3 wins on more benchmarks overall (6 vs 0). However, the best choice depends on your specific needs — each model excels in different areas.
How does Grok 4 compare to Kimi K3 for coding?
SWE-bench Verified data is not available for both models. Check the detailed comparison charts above for other coding-related metrics.
Is Grok 4 cheaper than Kimi K3?
Yes, Kimi K3 is cheaper. Grok 4 costs $3.0/1M input and $15.0/1M output tokens. Kimi K3 costs $2.6/1M input and $13.3/1M output tokens.
Which is faster, Grok 4 or Kimi K3?
Output speed data is not available for both models. Check the speed section of the comparison above for available performance data.
What benchmarks does the Grok 4 vs Kimi K3 comparison cover?
This comparison covers 6 benchmarks including GPQA Diamond, Input Cost, Output Cost, Context Length, Design Arena ELO, Website Arena ELO. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.