cache
The package cache is warm. Nothing else is: no lockfile, no node_modules.
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cache
bun is fastest at 448ms, 30.3× faster than npm.The package cache is warm. Nothing else is: no lockfile, no node_modules.
Mean install time across 6 fixtures in the cache scenario, from the run of Oct 20, 2026 on GitHub-hosted ubuntu-24.04-arm runners.
Disclosure. vlt publishes this benchmark, and vlt is one of the tools it measures. The suite, its configuration and every result file are public.
| 1 | bun1.4.3 | 448ms±18.7% | 30.3× faster | +12.6% | ||
| 2 | deno | |||||
448ms
Milliseconds per installed package; lower is faster. Tools disagree about what a dependency graph contains, so a tool that installs fewer packages finishes sooner without being faster — this is the figure that corrects for it. Dashed outline and dashed rule: the baseline, npm.
Not drawn: yarn, yarn (zpm)
Lower is faster. ± is the pooled relative standard deviation. Since last run compares with Oct 19, 2026.
yarn (zpm) did not complete every fixture
600ms
779ms
821ms
947ms
1.40s
1.47s
7.24s
13.6s
13.7s
Lower is faster. Bars start at zero, each a bright cap on its tool's colour, labelled with its time and its multiple of the baseline. Dashed outline and dashed rule: the baseline, npm.
Not drawn: yarn (zpm)
Lower is faster; bars start at zero, each a bright cap on its tool's colour. All fixtures: a group per fixture, the tools in leaderboard order, as in the legend; hover a fixture to read each by name. Each fixture: its tools fastest first, each labelled with its time. A tool is drawn on every fixture it finished; a failed run is named, not drawn. The legend shows and hides tools everywhere on the page. Dashed outline and dashed rule: the baseline, npm.
| bun | 81ms55.2× faster | 1.81s25.1× faster | 468ms28.7× faster | 179ms49.3× faster | 24ms75.3× faster | 128ms58.3× faster |
| deno | 170ms26.3× faster | 2.18s20.9× faster | 580ms23.2× faster | 349ms25.3× faster | 68ms27.1× faster | 254ms29.4× faster |
| aube | 190ms23.5× faster | 2.71s16.8× faster | 1.04s12.9× faster | 335ms26.4× faster | 99ms18.6× faster | 301ms24.8× faster |
| upm | 320ms14.0× faster | 2.49s18.2× faster | 1.06s12.7× faster | 464ms19.0× faster | 182ms10.1× faster | 412ms18.1× faster |
| yarn (zpm) | 673ms6.6× faster | DNF | 1.45s9.2× faster | 1.47s6.0× faster | 394ms4.7× faster | 743ms10.1× faster |
| vlt | 603ms7.4× faster | 4.17s10.9× faster | 1.69s7.9× faster | 869ms10.2× faster | 295ms6.2× faster | 792ms9.4× faster |
| pnpm | 483ms9.3× faster | 5.12s8.9× faster | 1.43s9.4× faster | 780ms11.3× faster | 357ms5.1× faster | 633ms11.8× faster |
| yarn (berry) | 2.56s1.75× faster | 23.4s1.95× faster | 7.50s1.79× faster | 5.19s1.70× faster | 1.30s1.41× faster | 3.55s2.1× faster |
| npm | 4.47sbaseline | 45.5sbaseline | 13.4sbaseline | 8.83sbaseline | 1.84sbaseline | 7.47sbaseline |
| yarn | 3.37s1.33× faster | 42.2s1.08× faster | 17.6s1.31× slower | 8.58s1.03× faster | 2.74s1.49× slower | 7.88s1.06× slower |
Each cell is the mean time, with its multiple of npm on that fixture beneath. Bold: fastest on the fixture. DNF: the run exited non-zero and is excluded from every figure. A dash: not run on that fixture.
| bun | 0.3ms55.8× faster | 1.1ms23.0× faster | 0.3ms31.8× faster | 0.5ms49.9× faster | 0.4ms76.6× faster | 0.3ms58.3× faster |
| deno | 0.6ms26.6× faster | 1.5ms17.4× faster | 0.5ms21.2× faster | 1.1ms25.0× faster | 1.1ms27.6× faster | 0.6ms27.9× faster |
| aube | 0.7ms22.7× faster | 2.0ms12.6× faster | 1.0ms10.0× faster | 1.0ms25.1× faster | 1.7ms18.6× faster | 0.8ms21.8× faster |
| upm | 1.1ms14.0× faster | 1.6ms15.9× faster | 0.8ms11.7× faster | 1.4ms18.6× faster | 3.1ms10.1× faster | 1.0ms17.4× faster |
| yarn (zpm) | 2.4ms6.7× faster | DNF | 1.0ms10.0× faster | 4.3ms6.1× faster | 6.6ms4.8× faster | 1.7ms10.1× faster |
| vlt | 2.2ms7.4× faster | 2.7ms9.3× faster | 1.3ms7.3× faster | 2.7ms9.9× faster | 5.0ms6.3× faster | 1.9ms8.9× faster |
| pnpm | 1.7ms9.3× faster | 3.2ms7.9× faster | 1.1ms8.6× faster | 2.4ms11.1× faster | 6.2ms5.1× faster | 1.5ms11.2× faster |
| yarn (berry) | 9.2ms1.74× faster | 13.3ms1.91× faster | 5.6ms1.70× faster | 15.5ms1.71× faster | 22.5ms1.41× faster | 8.0ms2.1× faster |
| npm | 16.0msbaseline | 25.3msbaseline | 9.6msbaseline | 26.4msbaseline | 31.7msbaseline | 16.7msbaseline |
| yarn | 12.0ms1.34× faster | — | 13.2ms1.38× slower | — | 46.4ms1.47× slower | 17.7ms1.06× slower |
Bold: fastest on the fixture. A tool with a time but no published package count is left out rather than divided by a guess.
A range beneath a count means that tool's installs did not all produce the same number of packages.
| bun | 2 | 2 | 2 | 2 | 2 | 2 | 12 |
| deno | 2 | 2 | 2 | 2 | 2 | 2 | 12 |
| yarn (zpm) | 3 | 3 | 3 | 3 | 3 | 3 | 18 |
| npm | 4 | 4 | 4 | 4 | 4 | 4 | 24 |
| yarn | 4 | 4 | 4 | 4 | 4 | 4 | 24 |
| aube | 4 | 4 | 4 | 4 | 4 | 4 | 24 |
| upm | 4 | 4 | 4 | 4 | 4 | 4 | 24 |
| yarn (berry) | 4 | 6 | 4 | 4 | 4 | 4 | 26 |
| vlt | 5 | 10 | 5 | 5 | 5 | 5 | 35 |
| pnpm | 7 | 7 | 7 | 7 | 7 | 7 | 42 |