GPT-5.6 Sol (Max) vs GPT-6.1 Terra (Xhigh)
Which is better for the money: GPT-5.6 Sol (Max) by OpenAI or GPT-6.1 Terra (Xhigh) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-27.
Trade-off
Verdict
Depends on your budget
GPT-5.6 Sol (Max) scores 1.6 points higher (47.0 vs 45.4) but costs 9.5× as much to run the benchmark ($3465 vs $365; flagship vs mid-range cost classes). They are not alternatives at one budget: pick GPT-5.6 Sol (Max) when you need intelligence above 45.4, and GPT-6.1 Terra (Xhigh) when 45.4 is enough.
| Metric | GPT-5.6 Sol (Max) | GPT-6.1 Terra (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 47.0 | 45.4 | −3.4% GPT-6.1 Terra (Xhigh) is 3.4% less intelligent |
| Total AA cost (lower is better) | $3,464.84 | $364.95 | −89.5% GPT-6.1 Terra (Xhigh) is 89.5% cheaper |
| End-to-end time (lower is better) | 112.29s | 27.17s | −75.8% GPT-6.1 Terra (Xhigh) is 75.8% faster |
| Price per 1M tokens (in / out) | $4.00 / $20.0 | $1.00 / $5.00 | |
| Input modalities | Text, Image | Text, Image |
GPT-6.1 Terra (Xhigh) vs GPT-5.6 Sol (Max): 3.4% less intelligence, 89.5% less cost to run the AA benchmark, and 75.8% faster end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.6 Sol (Max) is off the frontier: at the same or lower cost, Kimi K3.1 Pro scores 55.10 for $3117.
- GPT-6.1 Terra (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Medium) scores 47.80 for $361.
GPT-5.6 Sol (Max)GPT-6.1 Terra (Xhigh)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/gpt-6-1-terra-xhigh · Markdown: /api/v1/compare/gpt-5-6-sol/gpt-6-1-terra-xhigh?format=md · llms.txt · agent skill