Gemini 3.8 Flash vs Composer 2.5
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 | Composer 2.5 | Advantage |
|---|---|---|---|
| Capability | 53% | 57% | +3% (Composer 2.5 leads) |
| Median task time | 4m 14s | 1m 49s | 2m 25s faster (Composer 2.5 leads) |
| Approx. task cost | $0.063 / task | $0.024 / task | $0.039 / task lower (Composer 2.5 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. Composer 2.5: 1.8% of Cursor Pro (1.8% / 1m) 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 | Composer 2.5 | Advantage |
|---|---|---|---|
| Capability | 39% | 49% | +10% (Composer 2.5 leads) |
| Median task time | 2m 39s | 1m 49s | 50s faster (Composer 2.5 leads) |
| Approx. task cost | $0.022 / task | $0.023 / task | $0.000 / 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. Composer 2.5: 0.5% of Cursor Pro (0.5% / 1m) 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 | Composer 2.5 | Advantage |
|---|---|---|---|
| Capability | 52% | 35% | +17% (Gemini 3.8 Flash leads) |
| Median task time | 7m 7s | 2m 13s | 4m 54s faster (Composer 2.5 leads) |
| Approx. task cost | $0.046 / task | $0.028 / task | $0.017 / task lower (Composer 2.5 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. Composer 2.5: 0.1% of Cursor Pro (0.1% / 1m) 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 Composer 2.5?
Gemini 3.8 Flash clears higher: tier 3 of 5 versus tier 2 for Composer 2.5 on real-world@v3, our private suite of real-world coding problems. Latest measurement 2026-09-02.