Gemini 3.1 Pro Preview vs GPT-5.6 Terra (Medium)
Which is better for the money: Gemini 3.1 Pro Preview by Google or GPT-5.6 Terra (Medium) 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 (Medium)
GPT-5.6 Terra (Medium) vs Gemini 3.1 Pro Preview: 1.3% more intelligence, 76.9% less cost to run the AA benchmark, and 76.6% faster end-to-end.
| Metric | Gemini 3.1 Pro Preview | GPT-5.6 Terra (Medium) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 29.7 | 30.1 | +1.3% GPT-5.6 Terra (Medium) is 1.3% more intelligent |
| Total AA cost (lower is better) | $1,935.39 | $446.53 | −76.9% GPT-5.6 Terra (Medium) is 76.9% cheaper |
| End-to-end time (lower is better) | 24.98s | 5.84s | −76.6% GPT-5.6 Terra (Medium) is 76.6% faster |
| Price per 1M tokens (in / out) | $2.00 / $12.0 | $2.00 / $12.0 | |
| Input modalities | Text, Image, Speech, Video | Text, Image |
Today's Pareto frontier
Against the frontier
- Gemini 3.1 Pro Preview is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
- GPT-5.6 Terra (Medium) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Medium) scores 47.80 for $361.
Gemini 3.1 Pro PreviewGPT-5.6 Terra (Medium)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/gemini-3-1-pro-preview/gpt-5-6-terra-medium · Markdown: /api/v1/compare/gemini-3-1-pro-preview/gpt-5-6-terra-medium?format=md · llms.txt · agent skill