GPT-5.6 Terra (Xhigh) vs GPT-6.1 Sol (High)
Which is better for the money: GPT-5.6 Terra (Xhigh) by OpenAI or GPT-6.1 Sol (High) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.
Clear winner
Verdict
Pick GPT-6.1 Sol (High)
GPT-6.1 Sol (High) vs GPT-5.6 Terra (Xhigh): 32.1% more intelligence, 56.1% less cost to run the AA benchmark, and 189.8% slower end-to-end.
| Metric | GPT-5.6 Terra (Xhigh) | GPT-6.1 Sol (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 38.0 | 50.2 | +32.1% GPT-6.1 Sol (High) is 32.1% more intelligent |
| Total AA cost (lower is better) | $1,186.77 | $521.32 | −56.1% GPT-6.1 Sol (High) is 56.1% cheaper |
| End-to-end time (lower is better) | 14.99s | 43.44s | +189.8% GPT-6.1 Sol (High) is 189.8% slower |
| Price per 1M tokens (in / out) | $2.00 / $12.0 | $2.00 / $10.0 | |
| Input modalities | Text, Image | Text, Image |
Today's Pareto frontier
Against the frontier
- GPT-5.6 Terra (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
- GPT-6.1 Sol (High) is on today's frontier: nothing is both smarter and cheaper.
GPT-5.6 Terra (Xhigh)GPT-6.1 Sol (High)Today's Pareto frontierEvery other model
Matchup
Compare something else
Agents:
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-6-terra-xhigh/gpt-6-1-sol-high · Markdown: /api/v1/compare/gpt-5-6-terra-xhigh/gpt-6-1-sol-high?format=md · llms.txt · agent skill