Gemini 2.5 Pro vs Gemini 3.8 Flash (High)
Which is better for the money: Gemini 2.5 Pro by Google or Gemini 3.8 Flash (High) by Google? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.
Trade-off
Verdict
Depends on your budget
Gemini 3.8 Flash (High) scores 24.8 points higher (40.9 vs 16.1) but costs 2.0× as much to run the benchmark ($1623 vs $823; both premium class). Pick Gemini 3.8 Flash (High) when the extra intelligence is worth the premium, otherwise Gemini 2.5 Pro.
| Metric | Gemini 2.5 Pro | Gemini 3.8 Flash (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 16.1 | 40.9 | +154.0% Gemini 3.8 Flash (Hig… is 2.5× more intelligent |
| Total AA cost (lower is better) | $822.85 | $1,622.73 | +97.2% Gemini 3.8 Flash (Hig… is 97.2% more expensive |
| End-to-end time (lower is better) | 27.13s | 33.13s | +22.1% Gemini 3.8 Flash (Hig… is 22.1% slower |
| Price per 1M tokens (in / out) | $1.25 / $10.0 | $0.75 / $3.75 | |
| Input modalities | Text, Image, Speech, Video | Text, Image, Speech, Video |
Gemini 3.8 Flash (High) vs Gemini 2.5 Pro: 154.0% more intelligence, 97.2% more cost to run the AA benchmark, and 22.1% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Gemini 2.5 Pro is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
- 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.
Gemini 2.5 ProGemini 3.8 Flash (High)Today's Pareto frontierEvery other model
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gemini-2-5-pro/gemini-3-8-flash · Markdown: /api/v1/compare/gemini-2-5-pro/gemini-3-8-flash?format=md · llms.txt · agent skill