Gemini 3.8 Flash (High) vs GPT-5.6 Terra (Xhigh)
Which is better for the money: Gemini 3.8 Flash (High) by Google or GPT-5.6 Terra (Xhigh) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Trade-off
Verdict
Depends on your budget
Gemini 3.8 Flash (High) scores 2.9 points higher (40.9 vs 38.0) but costs 1.4× as much to run the benchmark ($1623 vs $1187; both premium class). Pick Gemini 3.8 Flash (High) when the extra intelligence is worth the premium, otherwise GPT-5.6 Terra (Xhigh).
| Metric | Gemini 3.8 Flash (High) | GPT-5.6 Terra (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 40.9 | 38.0 | −7.1% GPT-5.6 Terra (Xhigh) is 7.1% less intelligent |
| Total AA cost (lower is better) | $1,622.73 | $1,186.77 | −26.9% GPT-5.6 Terra (Xhigh) is 26.9% cheaper |
| End-to-end time (lower is better) | 29.02s | 28.74s | −1.0% GPT-5.6 Terra (Xhigh) is 1.0% faster |
| Price per 1M tokens (in / out) | $0.75 / $3.75 | $2.00 / $12.0 | |
| Input modalities | Text, Image, Speech, Video | Text, Image |
GPT-5.6 Terra (Xhigh) vs Gemini 3.8 Flash (High): 7.1% less intelligence, 26.9% less cost to run the AA benchmark, and 1.0% faster end-to-end.
Today's Pareto frontier
Against the frontier
- Gemini 3.8 Flash (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.
Gemini 3.8 Flash (High)GPT-5.6 Terra (Xhigh)Today's Pareto frontierEvery other model
Matchup
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