GPT-5.6 Sol (High) vs GPT-5.6 Terra (Xhigh)
Which is better for the money: GPT-5.6 Sol (High) by OpenAI or GPT-5.6 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 (High) scores 4.3 points higher (42.3 vs 38.0) but costs 1.3× as much to run the benchmark ($1487 vs $1187; both premium class). Pick GPT-5.6 Sol (High) when the extra intelligence is worth the premium, otherwise GPT-5.6 Terra (Xhigh).
| Metric | GPT-5.6 Sol (High) | GPT-5.6 Terra (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 42.3 | 38.0 | −10.2% GPT-5.6 Terra (Xhigh) is 10.2% less intelligent |
| Total AA cost (lower is better) | $1,487.34 | $1,186.77 | −20.2% GPT-5.6 Terra (Xhigh) is 20.2% cheaper |
| End-to-end time (lower is better) | 16.35s | 33.63s | +105.7% GPT-5.6 Terra (Xhigh) is 105.7% slower |
| Price per 1M tokens (in / out) | $4.00 / $20.0 | $2.00 / $12.0 | |
| Input modalities | Text, Image | Text, Image |
GPT-5.6 Terra (Xhigh) vs GPT-5.6 Sol (High): 10.2% less intelligence, 20.2% less cost to run the AA benchmark, and 105.7% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.6 Sol (High) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
- 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-5.6 Sol (High)GPT-5.6 Terra (Xhigh)Today's Pareto frontierEvery other model
Matchup
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