Kimi K3.1 Pro vs Solar Pro 4
Which is better for the money: Kimi K3.1 Pro by Kimi or Solar Pro 4 by Upstage? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.
Trade-off
Verdict
Depends on your budget
Kimi K3.1 Pro scores 28.5 points higher (55.1 vs 26.6) but costs 4.2× as much to run the benchmark ($3117 vs $737; flagship vs premium cost classes). They are not alternatives at one budget: pick Kimi K3.1 Pro when you need intelligence above 26.6, and Solar Pro 4 when 26.6 is enough.
| Metric | Kimi K3.1 Pro | Solar Pro 4 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 55.1 | 26.6 | −51.7% Solar Pro 4 is 51.7% less intelligent |
| Total AA cost (lower is better) | $3,117.31 | $736.82 | −76.4% Solar Pro 4 is 76.4% cheaper |
| End-to-end time (lower is better) | 42.64s | Not reported | — not comparable |
| Price per 1M tokens (in / out) | $2.00 / $10.0 | $0.30 / $1.20 | |
| Input modalities | Text, Image | Text |
Solar Pro 4 vs Kimi K3.1 Pro: 51.7% less intelligence, 76.4% less cost to run the AA benchmark, and end-to-end time not fully reported.
Today's Pareto frontier
Against the frontier
- Kimi K3.1 Pro is on today's frontier: nothing is both smarter and cheaper.
- Solar Pro 4 is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
Kimi K3.1 ProSolar Pro 4Today'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/kimi-k3-1-pro/solar-pro4 · Markdown: /api/v1/compare/kimi-k3-1-pro/solar-pro4?format=md · llms.txt · agent skill