Grok 4.5 (High) vs Kimi K3.1 Pro
Which is better for the money: Grok 4.5 (High) by SpaceXAI or Kimi K3.1 Pro 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
Kimi K3.1 Pro scores 16.3 points higher (55.1 vs 38.8) but costs 2.5× as much to run the benchmark ($3117 vs $1244; flagship vs premium cost classes). Pick Kimi K3.1 Pro when the extra intelligence is worth the premium, otherwise Grok 4.5 (High).
| Metric | Grok 4.5 (High) | Kimi K3.1 Pro | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 38.8 | 55.1 | +42.0% Kimi K3.1 Pro is 42.0% more intelligent |
| Total AA cost (lower is better) | $1,243.85 | $3,117.31 | +150.6% Kimi K3.1 Pro is 2.5× more expensive |
| End-to-end time (lower is better) | 19.45s | 46.58s | +139.5% Kimi K3.1 Pro is 139.5% slower |
| Price per 1M tokens (in / out) | $2.00 / $6.00 | $2.00 / $10.0 | |
| Input modalities | Text, Image | Text, Image |
Kimi K3.1 Pro vs Grok 4.5 (High): 42.0% more intelligence, 150.6% more cost to run the AA benchmark, and 139.5% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Grok 4.5 (High) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
- Kimi K3.1 Pro is on today's frontier: nothing is both smarter and cheaper.
Grok 4.5 (High)Kimi K3.1 ProToday's Pareto frontierEvery other model
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/grok-4-5/kimi-k3-1-pro · Markdown: /api/v1/compare/grok-4-5/kimi-k3-1-pro?format=md · llms.txt · agent skill