Gemini 3.5 Flash (High) vs GPT-5.6 Terra (Xhigh)
Which is better for the money: Gemini 3.5 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.
Clear winner
Verdict
Pick GPT-5.6 Terra (Xhigh)
GPT-5.6 Terra (Xhigh) vs Gemini 3.5 Flash (High): 16.6% more intelligence, 71.9% less cost to run the AA benchmark, and 96.8% slower end-to-end.
| Metric | Gemini 3.5 Flash (High) | GPT-5.6 Terra (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 32.6 | 38.0 | +16.6% GPT-5.6 Terra (Xhigh) is 16.6% more intelligent |
| Total AA cost (lower is better) | $4,222.12 | $1,186.77 | −71.9% GPT-5.6 Terra (Xhigh) is 71.9% cheaper |
| End-to-end time (lower is better) | 17.12s | 33.69s | +96.8% GPT-5.6 Terra (Xhigh) is 96.8% slower |
| Price per 1M tokens (in / out) | $1.50 / $9.00 | $2.00 / $12.0 | |
| Input modalities | Text, Image, Speech, Video | Text, Image |
Today's Pareto frontier
Against the frontier
- Gemini 3.5 Flash (High) is off the frontier: at the same or lower cost, Claude Opus 5.5 (Xhigh, Default Fallback) scores 56.00 for $4057.
- 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 3.5 Flash (High)GPT-5.6 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/gemini-3-5-flash/gpt-5-6-terra-xhigh · Markdown: /api/v1/compare/gemini-3-5-flash/gpt-5-6-terra-xhigh?format=md · llms.txt · agent skill