GPT-5.5 (Xhigh) vs Kimi K2.7 Code
Which is better for the money: GPT-5.5 (Xhigh) by OpenAI or Kimi K2.7 Code by Kimi? 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
GPT-5.5 (Xhigh) scores 12.6 points higher (38.4 vs 25.8) but costs 5.3× as much to run the benchmark ($5294 vs $993; flagship vs premium cost classes). They are not alternatives at one budget: pick GPT-5.5 (Xhigh) when you need intelligence above 25.8, and Kimi K2.7 Code when 25.8 is enough.
| Metric | GPT-5.5 (Xhigh) | Kimi K2.7 Code | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 38.4 | 25.8 | −32.8% Kimi K2.7 Code is 32.8% less intelligent |
| Total AA cost (lower is better) | $5,294.36 | $992.88 | −81.2% Kimi K2.7 Code is 81.2% cheaper |
| End-to-end time (lower is better) | 44.96s | 46.75s | +4.0% Kimi K2.7 Code is 4.0% slower |
| Price per 1M tokens (in / out) | $5.00 / $30.0 | $0.95 / $4.00 | |
| Input modalities | Text, Image | Text, Image, Video |
Kimi K2.7 Code vs GPT-5.5 (Xhigh): 32.8% less intelligence, 81.2% less cost to run the AA benchmark, and 4.0% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.5 (Xhigh) is off the frontier: at the same or lower cost, Claude Opus 5.5 (Xhigh, Default Fallback) scores 56.00 for $4057.
- Kimi K2.7 Code is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
GPT-5.5 (Xhigh)Kimi K2.7 CodeToday'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/gpt-5-5/kimi-k2-7-code · Markdown: /api/v1/compare/gpt-5-5/kimi-k2-7-code?format=md · llms.txt · agent skill