Mosaic vs Vercel BlobStorage Benchmark Comparison
Mosaic and Vercel Blob were each faster in 1 of 2 shared storage measurements.
- Shared storage measurements
- 2
- Last run
- October 30, 2026
Scorecard
Median of each storage measurement's primary metric; lower is better. Medians within 5% count as roughly even, and a storage measurement gets no speed verdict when either provider completed fewer than 50% of runs.
| Benchmark | Mosaic | Vercel Blob | Result | Ratio |
|---|---|---|---|---|
| Upload (10 MB) Upload time · Run October 30, 2026 | 1154ms 100% success | 224ms 100% success | Vercel Blob faster | 5.15x |
| Download (10 MB) Download time · Run October 30, 2026 | 323ms 100% success | 486ms 100% success | Mosaic faster | 1.51x |
Upload (10 MB)
Run October 30, 2026Time to upload a 10 MB file to the provider, measured in the 10 MB storage lifecycle benchmark.
Upload time
Vercel Blob had a 5.15x lower median upload time (224ms vs 1154ms for Mosaic).
Median upload time over time
11 runs from August 21, 2026 to October 30, 2026.
Download (10 MB)
Run October 30, 2026Time to download the same 10 MB file back, measured in the 10 MB storage lifecycle benchmark.
Download time
Mosaic had a 1.51x lower median download time (323ms vs 486ms for Vercel Blob).
Median download time over time
11 runs from August 21, 2026 to October 30, 2026.
Methodology
- One workload, every provider. The same script, payload, and model hit every provider, addressed the way its own API expects. Nobody gets a tuned or special path.
- Repeated on a schedule. Every suite runs many iterations per provider, automated on a recurring schedule, so results reflect steady state rather than one lucky request.
- Raw results published. Every run is committed as JSON to the public benchmarks repo, next to the code that produced it. Nothing is cherry-picked or held back.
- How this comparison is built. Each benchmark compares the two providers' medians; results within 5% count as roughly even. A comparison is published only when both providers completed the 10 MB storage lifecycle benchmark reliably: at least 50% success for each provider, in benchmark runs from the last 30 days.
Frequently asked questions
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Mosaic and Vercel Blob were each faster in 1 of 2 shared storage measurements. In Upload (10 MB) (October 30, 2026), Vercel Blob had a median upload time of 224ms versus 1154ms for Mosaic, 5.15x faster. In Download (10 MB) (October 30, 2026), Mosaic had a median download time of 323ms versus 486ms for Vercel Blob, 1.51x faster.