gemini-3.7-flash vs gpt-5.6-luna
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-3.7-flash | gpt-5.6-luna | Advantage |
|---|---|---|---|
| Capability | 53% | 53% | Even |
| Median task time | 2m 50s | 1m 59s | 52s faster (gpt-5.6-luna leads) |
| Approx. task cost | $0.035 / task | $0.009 / task | $0.026 / task lower (gpt-5.6-luna leads) |
gemini-3.7-flash: 11.3% of Google AI Pro (67.8% / 5h, 11.3% / 1w) per run. gpt-5.6-luna: 2.9% of ChatGPT Plus (2.9% / 1w) per run. Each figure is a share of that agent's own plan, so there is no delta to draw.
| Dimension | gemini-3.7-flash | gpt-5.6-luna | Advantage |
|---|---|---|---|
| Capability | 40% | 58% | +18% (gpt-5.6-luna leads) |
| Median task time | 1m 59s | 2m 11s | 12s faster (gemini-3.7-flash leads) |
| Approx. task cost | $0.014 / task | $0.004 / task | $0.010 / task lower (gpt-5.6-luna leads) |
gemini-3.7-flash: 1.2% of Google AI Pro (7.3% / 5h, 1.2% / 1w) per run. gpt-5.6-luna: 0.3% of ChatGPT Plus (0.3% / 1w) per run. Each figure is a share of that agent's own plan, so there is no delta to draw.
| Dimension | gemini-3.7-flash | gpt-5.6-luna | Advantage |
|---|---|---|---|
| Capability | 79% | 28% | +52% (gemini-3.7-flash leads) |
| Median task time | 4m 7s | 2m 44s | 1m 23s faster (gpt-5.6-luna leads) |
| Approx. task cost | $0.029 / task | $0.008 / task | $0.021 / task lower (gpt-5.6-luna leads) |
gemini-3.7-flash: 0.6% of Google AI Pro (3.7% / 5h, 0.6% / 1w) per good solve. gpt-5.6-luna: 0.2% of ChatGPT Plus (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-3.7-flash or gpt-5.6-luna?
They are even on our ladder: both clear tier 3 of 5 at 53% capability on real-world@v3, our private suite of real-world coding problems. Latest measurement 2026-08-16.