Claude Sonnet 5 (Xhigh) vs Kimi K3 (Low)
Which is better for the money: Claude Sonnet 5 (Xhigh) by Anthropic or Kimi K3 (Low) by Kimi? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Trade-off
Verdict
Depends on your budget
Claude Sonnet 5 (Xhigh) scores 4.3 points higher (34.4 vs 30.1) but costs 2.7× as much to run the benchmark ($3255 vs $1190; flagship vs premium cost classes). Pick Claude Sonnet 5 (Xhigh) when the extra intelligence is worth the premium, otherwise Kimi K3 (Low).
| Metric | Claude Sonnet 5 (Xhigh) | Kimi K3 (Low) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 34.4 | 30.1 | −12.5% Kimi K3 (Low) is 12.5% less intelligent |
| Total AA cost (lower is better) | $3,255.40 | $1,190.42 | −63.4% Kimi K3 (Low) is 63.4% cheaper |
| End-to-end time (lower is better) | 26.92s | 53.54s | +98.9% Kimi K3 (Low) is 98.9% slower |
| Price per 1M tokens (in / out) | $2.00 / $10.0 | $3.00 / $15.0 | |
| Input modalities | Text, Image | Text, Image |
Kimi K3 (Low) vs Claude Sonnet 5 (Xhigh): 12.5% less intelligence, 63.4% less cost to run the AA benchmark, and 98.9% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Sonnet 5 (Xhigh) is off the frontier: at the same or lower cost, Kimi K3.1 Pro scores 55.10 for $3117.
- Kimi K3 (Low) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
Claude Sonnet 5 (Xhigh)Kimi K3 (Low)Today's Pareto frontierOpen-weights frontierEvery other model
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-sonnet-5-xhigh/kimi-k3-low · Markdown: /api/v1/compare/claude-sonnet-5-xhigh/kimi-k3-low?format=md · llms.txt · agent skill