Gemini 3.8 Flash vs Grok 4.6
Each agent graded on the same private suites, running headless through its own tools. Advantages are oriented so a win is a win, whichever way the metric runs.
| Dimension | Gemini 3.8 Flash | Grok 4.6 | Advantage |
|---|---|---|---|
| Capability | 53% | 60% | +7% (Grok 4.6 leads) |
| Median task time | 4m 14s | 12m 47s | 8m 33s faster (Gemini 3.8 Flash leads) |
| Approx. task cost | $0.063 / task | $0.016 / task | $0.047 / task lower (Grok 4.6 leads) |
Gemini 3.8 Flash: 20.4% of Google AI Pro (122.4% / 5h, 20.4% / 1w) per run. Its weekly limit holds 6 of the week's 33.6 5h windows. Grok 4.6: 3.5% of SuperGrok (3.5% / 1w) per run. Each figure is a share of that agent's own plan, so there is no delta to draw.
| Dimension | Gemini 3.8 Flash | Grok 4.6 | Advantage |
|---|---|---|---|
| Capability | 39% | 68% | +29% (Grok 4.6 leads) |
| Median task time | 2m 39s | 40m 6s | 37m 27s faster (Gemini 3.8 Flash leads) |
| Approx. task cost | $0.022 / task | $0.118 / task | $0.095 / task lower (Gemini 3.8 Flash leads) |
Gemini 3.8 Flash: 1.9% of Google AI Pro (11.7% / 5h, 1.9% / 1w) per run. Its weekly limit holds 6 of the week's 33.6 5h windows. Grok 4.6: 6.8% of SuperGrok (6.8% / 1w) per run. Each figure is a share of that agent's own plan, so there is no delta to draw.
| Dimension | Gemini 3.8 Flash | Grok 4.6 | Advantage |
|---|---|---|---|
| Capability | 52% | 46% | +6% (Gemini 3.8 Flash leads) |
| Median task time | 7m 7s | 8m 40s | 1m 33s faster (Gemini 3.8 Flash leads) |
| Approx. task cost | $0.046 / task | $0.013 / task | $0.032 / task lower (Grok 4.6 leads) |
Gemini 3.8 Flash: 1.0% of Google AI Pro (6.0% / 5h, 1.0% / 1w) per good solve. Its weekly limit holds 6 of the week's 33.6 5h windows. Grok 4.6: 0.2% of SuperGrok (0.2% / 1w) per good solve. Each figure is a share of that agent's own plan, so there is no delta to draw.
Grades and deltas are comparable only within a suite version. See methodology.
Frequently asked questions
Which is better for coding, Gemini 3.8 Flash or Grok 4.6?
Grok 4.6 clears higher: tier 4 of 5 versus tier 3 for Gemini 3.8 Flash on real-world@v3, our private suite of real-world coding problems. Latest measurement 2026-09-02.