Gemini 3.7 Flash vs GPT-5.6 Sol
Gemini 3.7 Flash was superseded by Gemini 3.8 Flash. GPT-5.6 Sol was superseded by GPT-6.1 Sol. The grades below are the last ones measured, so read them as history rather than as this week's board. See the current roster.
GPT-5.6 Sol leads overall, C- to D+. Gemini 3.7 Flash is about 1.6x cheaper per task. By suite, real-world issues is even at C- and GPT-5.6 Sol takes spec planning (C+ to D-). Take Gemini 3.7 Flash anyway when you want the side that is cheaper per task, faster on real-world issues and ahead on vibe coding.Measured
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.
Verdict: GPT-5.6 Sol vs Gemini 3.7 Flash
GPT-5.6 Sol leads overall, C- to D+. By suite: real-world issues is even at C- (60% vs 60% capability); GPT-5.6 Sol takes spec planning, C+ to D- (68% vs 40% capability); Gemini 3.7 Flash takes vibe coding, C- to D+ (61% vs 51% capability). Gemini 3.7 Flash used 9.4% of Google AI Pro's weekly limit per pass, $0.023 per task at the listed price. GPT-5.6 Sol used 3% of ChatGPT Pro 5x's weekly limit per pass, $0.036 per task at the listed price. Per task, Gemini 3.7 Flash is about 1.6x cheaper ($0.023 vs $0.036). Gemini 3.7 Flash is faster on real-world issues: a median task takes 2m 38s against 3m 13s. Both finished every task on it. Reasons to pick Gemini 3.7 Flash anyway: it is cheaper per task ($0.023 vs $0.036), it is faster on real-world issues (2m 38s vs 3m 13s median) and it leads on vibe coding (C- to D+).
Changed since the previous graded week: Gemini 3.7 Flash: real-world issues usage 8.5% to 8.2% of the weekly limit, spec planning D to D-, spec planning usage 1.3% to 1.2% of the weekly limit; GPT-5.6 Sol: vibe coding C- to D+.
| Dimension | Gemini 3.7 Flash | GPT-5.6 Sol | Advantage |
|---|---|---|---|
| Capability | 60% | 60% | Even |
| Median task time | 2m 38s | 3m 13s | 35s faster (Gemini 3.7 Flash leads) |
| Approx. task cost | $0.025 / task | $0.031 / task | $0.006 / task lower (Gemini 3.7 Flash leads) |
Gemini 3.7 Flash: 8.2% of Google AI Pro (49.1% / 5h, 8.2% / 1w) per run. Its weekly limit holds 6 of the week's 33.6 5h windows. GPT-5.6 Sol: 2.0% of ChatGPT Pro 5x (2.0% / 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 Sol | Advantage |
|---|---|---|---|
| Capability | 40% | 68% | +29% (GPT-5.6 Sol leads) |
| Median task time | 1m 38s | 6m 0s | 4m 22s faster (Gemini 3.7 Flash leads) |
| Approx. task cost | $0.014 / task | $0.057 / task | $0.044 / task lower (Gemini 3.7 Flash leads) |
Gemini 3.7 Flash: 1.2% of Google AI Pro (7.1% / 5h, 1.2% / 1w) per run. Its weekly limit holds 6 of the week's 33.6 5h windows. GPT-5.6 Sol: 1.0% of ChatGPT Pro 5x (1.0% / 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 Sol | Advantage |
|---|---|---|---|
| Capability | 61% | 51% | +10% (Gemini 3.7 Flash leads) |
| Median task time | 3m 37s | 3m 56s | 19s faster (Gemini 3.7 Flash leads) |
| Approx. task cost | $0.028 / task | $0.092 / task | $0.064 / task lower (Gemini 3.7 Flash leads) |
Gemini 3.7 Flash: 0.6% of Google AI Pro (3.6% / 5h, 0.6% / 1w) per good solve. Its weekly limit holds 6 of the week's 33.6 5h windows. GPT-5.6 Sol: 0.4% of ChatGPT Pro 5x (0.4% / 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 Sol?
They are even on our ladder: both clear tier 4 of 5 at 60% capability on real-world@v3, our private suite of real-world coding problems. Latest measurement 2026-08-30.
Which is cheaper per task, Gemini 3.7 Flash or GPT-5.6 Sol?
Gemini 3.7 Flash used 9.4% of Google AI Pro's weekly limit per pass, $0.023 per task at the listed price. GPT-5.6 Sol used 3% of ChatGPT Pro 5x's weekly limit per pass, $0.036 per task at the listed price. Per task, Gemini 3.7 Flash is about 1.6x cheaper ($0.023 vs $0.036).