gemini-3.1-pro vs claude-sonnet-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-3.1-pro | claude-sonnet-5 | Advantage |
|---|---|---|---|
| Capability | 47% | 53% | +7% (claude-sonnet-5 leads) |
| Median task time | 4m 24s | 5m 6s | 42s faster (gemini-3.1-pro leads) |
| Approx. task cost | $0.025 / task | $0.009 / task | $0.016 / task lower (claude-sonnet-5 leads) |
gemini-3.1-pro: 8.0% of Google AI Pro (48.1% / 5h, 8.0% / 1w) per run. claude-sonnet-5: about 9.7% of Claude Max 20x (about 9.7% / 5h, 1.0% / 1w) per run (estimated: 2 of 15 cells measured no share of their own). Each figure is a share of that agent's own plan, so there is no delta to draw.
| Dimension | gemini-3.1-pro | claude-sonnet-5 | Advantage |
|---|---|---|---|
| Capability | 25% | 37% | +12% (claude-sonnet-5 leads) |
| Median task time | 4m 34s | 5m 21s | 48s faster (gemini-3.1-pro leads) |
| Approx. task cost | $0.032 / task | $0.005 / task | $0.027 / task lower (claude-sonnet-5 leads) |
gemini-3.1-pro: 0.7% of Google AI Pro (4.2% / 5h, 0.7% / 1w) per good solve. claude-sonnet-5: 0.4% of Claude Max 20x (0.4% / 5h, 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-3.1-pro or claude-sonnet-5?
Both clear tier 3 of 5, but claude-sonnet-5 scores higher on capability: 53% versus 47% on real-world@v3, our private suite of real-world coding problems. Latest measurement 2026-08-10.