Gemini 3.6 Flash vs GPT-6 Astra
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-6 Astra | Advantage |
|---|---|---|---|
| Capability | 60% | 57% | +3% (Gemini 3.6 Flash leads) |
| Median task time | 2m 17s | 1m 56s | 20s faster (GPT-6 Astra leads) |
| Approx. task cost | $0.039 / task | $0.046 / task | $0.007 / task lower (Gemini 3.6 Flash leads) |
Gemini 3.6 Flash: 12.6% of Google AI Pro (about 72.1% / 5h, 12.6% / 1w) per run. Its weekly limit holds 6 of the week's 33.6 5h windows. GPT-6 Astra: 3.0% of ChatGPT Pro $100 (3.0% / 1w) per run. Each figure is a share of that agent's own plan, so there is no delta to draw.
Only GPT-6 Astra has run this suite, so there is no head-to-head yet.
| Dimension | Gemini 3.6 Flash | GPT-6 Astra | Advantage |
|---|---|---|---|
| Capability | 72% | 61% | +10% (Gemini 3.6 Flash leads) |
| Median task time | 1m 54s | 2m 54s | 1m 0s faster (Gemini 3.6 Flash leads) |
| Approx. task cost | $0.038 / task | $0.046 / task | $0.008 / task lower (Gemini 3.6 Flash leads) |
Gemini 3.6 Flash: 0.8% of Google AI Pro (4.9% / 5h, 0.8% / 1w) per good solve. Its weekly limit holds 6 of the week's 33.6 5h windows. GPT-6 Astra: 0.2% of ChatGPT Pro $100 (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-6 Astra?
Gemini 3.6 Flash clears higher: tier 4 of 5 versus tier 2 for GPT-6 Astra on real-world@v3, our private suite of real-world coding problems. Latest measurement 2026-08-10.