Gemini 3.7 Flash vs Kimi K3 256K
Gemini 3.7 Flash was superseded by Gemini 3.8 Flash. The grades below are the last ones measured, so read them as history rather than as this week's board. See the current roster.
Both grade D+ overall. Gemini 3.7 Flash is about 6.5x cheaper per task. By suite, real-world issues is even at C- and Kimi K3 256K takes spec planning (C- to D-). Both agents run the same private suite cut headless through their own tools, each on its own subscription.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: Kimi K3 256K vs Gemini 3.7 Flash
Both grade D+ overall. By suite: real-world issues is even at C- (60% vs 60% capability); Kimi K3 256K takes spec planning, C- to D- (56% vs 40% capability); Gemini 3.7 Flash takes vibe coding, C- to F (61% vs 34% 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. Kimi K3 256K used 31% of Kimi Allegretto's weekly limit per pass, $0.146 per task at the listed price. Per task, Gemini 3.7 Flash is about 6.5x cheaper ($0.023 vs $0.146). Gemini 3.7 Flash is faster on real-world issues: a median task takes 2m 38s against 3m 31s. Both finished every task on it.
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; Kimi K3 256K: real-world issues usage 23% to 21% of the weekly limit, spec planning D+ to C-, spec planning usage 11% to 10% of the weekly limit, vibe coding usage 3% to 2.6% of the weekly limit.
| Dimension | Gemini 3.7 Flash | Kimi K3 256K | Advantage |
|---|---|---|---|
| Capability | 60% | 60% | Even |
| Median task time | 2m 38s | 3m 31s | 53s faster (Gemini 3.7 Flash leads) |
| Approx. task cost | $0.025 / task | $0.126 / task | $0.100 / 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. Kimi K3 256K: 104.0% of Kimi Allegretto (104.0% / 5h, 21.0% / 1w) per run. Its weekly limit holds about 5 of the week's 33.6 5h windows. Each figure is a share of that agent's own plan, so there is no delta to draw.
| Dimension | Gemini 3.7 Flash | Kimi K3 256K | Advantage |
|---|---|---|---|
| Capability | 40% | 56% | +16% (Kimi K3 256K leads) |
| Median task time | 1m 38s | 5m 26s | 3m 48s faster (Gemini 3.7 Flash leads) |
| Approx. task cost | $0.014 / task | $0.224 / task | $0.211 / 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. Kimi K3 256K: 52.0% of Kimi Allegretto (52.0% / 5h, 10.0% / 1w) per run. Its weekly limit holds about 5 of the week's 33.6 5h windows. Each figure is a share of that agent's own plan, so there is no delta to draw.
| Dimension | Gemini 3.7 Flash | Kimi K3 256K | Advantage |
|---|---|---|---|
| Capability | 61% | 34% | +27% (Gemini 3.7 Flash leads) |
| Median task time | 3m 37s | 7m 33s | 3m 55s faster (Gemini 3.7 Flash leads) |
| Approx. task cost | $0.028 / task | $0.233 / task | $0.205 / 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. Kimi K3 256K: 13.2% of Kimi Allegretto (13.2% / 5h, 2.6% / 1w) per good solve. Its weekly limit holds about 5 of the week's 33.6 5h windows. 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 Kimi K3 256K?
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 Kimi K3 256K?
Gemini 3.7 Flash used 9.4% of Google AI Pro's weekly limit per pass, $0.023 per task at the listed price. Kimi K3 256K used 31% of Kimi Allegretto's weekly limit per pass, $0.146 per task at the listed price. Per task, Gemini 3.7 Flash is about 6.5x cheaper ($0.023 vs $0.146).