GPT-6 Astra (Xhigh) vs Kimi K2.6 (Reasoning)
Which is better for the money: GPT-6 Astra (Xhigh) by OpenAI or Kimi K2.6 (Reasoning) by Kimi? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Trade-off
Verdict
Depends on your budget
GPT-6 Astra (Xhigh) scores 25.4 points higher (52.4 vs 27.0) but costs 2.5× as much to run the benchmark ($3803 vs $1528; flagship vs premium cost classes). Pick GPT-6 Astra (Xhigh) when the extra intelligence is worth the premium, otherwise Kimi K2.6 (Reasoning).
| Metric | GPT-6 Astra (Xhigh) | Kimi K2.6 (Reasoning) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 52.4 | 27.0 | −48.5% Kimi K2.6 (Reasoning) is 48.5% less intelligent |
| Total AA cost (lower is better) | $3,802.98 | $1,528.20 | −59.8% Kimi K2.6 (Reasoning) is 59.8% cheaper |
| End-to-end time (lower is better) | 176.59s | 54.26s | −69.3% Kimi K2.6 (Reasoning) is 69.3% faster |
| Price per 1M tokens (in / out) | $10.0 / $50.0 | $0.95 / $4.00 | |
| Input modalities | Text, Image | Text, Image, Video |
Kimi K2.6 (Reasoning) vs GPT-6 Astra (Xhigh): 48.5% less intelligence, 59.8% less cost to run the AA benchmark, and 69.3% faster end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-6 Astra (Xhigh) is off the frontier: at the same or lower cost, Kimi K3.1 Pro scores 55.10 for $3117.
- Kimi K2.6 (Reasoning) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
GPT-6 Astra (Xhigh)Kimi K2.6 (Reasoning)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/gpt-6-astra-xhigh/kimi-k2-6 · Markdown: /api/v1/compare/gpt-6-astra-xhigh/kimi-k2-6?format=md · llms.txt · agent skill