Gemini 3.8 Flash (High) vs Grok 4.6 (Xhigh)
Which is better for the money: Gemini 3.8 Flash (High) by Google or Grok 4.6 (Xhigh) by SpaceXAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Trade-off
Verdict
Depends on your budget
Grok 4.6 (Xhigh) scores 3.3 points higher (44.2 vs 40.9) but costs 1.4× as much to run the benchmark ($2242 vs $1623; flagship vs premium cost classes). Pick Grok 4.6 (Xhigh) when the extra intelligence is worth the premium, otherwise Gemini 3.8 Flash (High).
| Metric | Gemini 3.8 Flash (High) | Grok 4.6 (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 40.9 | 44.2 | +8.1% Grok 4.6 (Xhigh) is 8.1% more intelligent |
| Total AA cost (lower is better) | $1,622.73 | $2,241.91 | +38.2% Grok 4.6 (Xhigh) is 38.2% more expensive |
| End-to-end time (lower is better) | 32.17s | 37.86s | +17.7% Grok 4.6 (Xhigh) is 17.7% slower |
| Price per 1M tokens (in / out) | $0.75 / $3.75 | $2.00 / $6.00 | |
| Input modalities | Text, Image, Speech, Video | Text, Image |
Grok 4.6 (Xhigh) vs Gemini 3.8 Flash (High): 8.1% more intelligence, 38.2% more cost to run the AA benchmark, and 17.7% slower 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.
- Grok 4.6 (Xhigh) is off the frontier: at the same or lower cost, Claude Opus 5.5 (High, Default Fallback) scores 53.60 for $2172.
Gemini 3.8 Flash (High)Grok 4.6 (Xhigh)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-3-8-flash/grok-4-6-xhigh · Markdown: /api/v1/compare/gemini-3-8-flash/grok-4-6-xhigh?format=md · llms.txt · agent skill