gemini-3.6-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-3.6-flash | gpt-5.6-luna | Advantage |
|---|---|---|---|
| Capability | 60% | 53% | +7% (gemini-3.6-flash leads) |
| Median task time | 2m 17s | 1m 59s | 18s faster (gpt-5.6-luna leads) |
| Approx. task cost | $0.039 / task | $0.009 / task | $0.030 / task lower (gpt-5.6-luna leads) |
gemini-3.6-flash: 12.6% of Google AI Pro (about 72.1% / 5h, 12.6% / 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.
Only gpt-5.6-luna has run this suite, so there is no head-to-head yet.
| Dimension | gemini-3.6-flash | gpt-5.6-luna | Advantage |
|---|---|---|---|
| Capability | 72% | 28% | +44% (gemini-3.6-flash leads) |
| Median task time | 1m 54s | 2m 44s | 50s faster (gemini-3.6-flash leads) |
| Approx. task cost | $0.038 / task | $0.008 / task | $0.030 / task lower (gpt-5.6-luna leads) |
gemini-3.6-flash: 0.8% of Google AI Pro (4.9% / 5h, 0.8% / 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-3.6-flash or gpt-5.6-luna?
gemini-3.6-flash clears higher: tier 4 of 5 versus tier 3 for gpt-5.6-luna on real-world@v3, our private suite of real-world coding problems. Latest measurement 2026-08-10.