GPT-5.6 Sol (Xhigh) vs GPT-6 Sol (High)
Which is better for the money: GPT-5.6 Sol (Xhigh) by OpenAI or GPT-6 Sol (High) by OpenAI? 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-5.6 Sol (Xhigh) scores 1.6 points higher (44.0 vs 42.4) but costs 3.4× as much to run the benchmark ($2082 vs $605; flagship vs premium cost classes). They are not alternatives at one budget: pick GPT-5.6 Sol (Xhigh) when you need intelligence above 42.4, and GPT-6 Sol (High) when 42.4 is enough.
| Metric | GPT-5.6 Sol (Xhigh) | GPT-6 Sol (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 44.0 | 42.4 | −3.6% GPT-6 Sol (High) is 3.6% less intelligent |
| Total AA cost (lower is better) | $2,082.28 | $604.52 | −71.0% GPT-6 Sol (High) is 71.0% cheaper |
| End-to-end time (lower is better) | 47.67s | 21.24s | −55.4% GPT-6 Sol (High) is 55.4% faster |
| Price per 1M tokens (in / out) | $4.00 / $20.0 | $2.00 / $10.0 | |
| Input modalities | Text, Image | Text, Image |
GPT-6 Sol (High) vs GPT-5.6 Sol (Xhigh): 3.6% less intelligence, 71.0% less cost to run the AA benchmark, and 55.4% faster end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.6 Sol (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
- GPT-6 Sol (High) is off the frontier: at the same or lower cost, GPT-6.1 Sol (High) scores 50.20 for $521.
GPT-5.6 Sol (Xhigh)GPT-6 Sol (High)Today'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/gpt-5-6-sol-xhigh/gpt-6-sol-high · Markdown: /api/v1/compare/gpt-5-6-sol-xhigh/gpt-6-sol-high?format=md · llms.txt · agent skill