# Browserbase vs Kernel: who uses which

On usedby, 21 companies use Browserbase and 14 use Kernel. 2 companies use both, including Vercel and Coframe. Counts include every proof level, job-post signals included; each company keeps its proof level on each side. Latest check 2026-10-25: 35 of 35 public lines checked.

## Side by side

|  | [Browserbase](https://www.usedby.ai/tools/browserbase.md) | [Kernel](https://www.usedby.ai/tools/kernel.md) |
|---|---|---|
| Public customers | 21 | 14 |
| Confirmed | 0 | 5 |
| Observed | 21 | 9 |
| Signals (job posts) | 0 | 0 |
| Top industries of customers (every proof level) | Artificial Intelligence (7), Fintech & Payments (3), Data & Analytics (2) | DevTools & Infrastructure (2), Biotech & Pharma (1), Fintech & Payments (1) |
| Category | Agent frameworks & AI gateways | Agent frameworks & AI gateways |
| Security | SOC 2 Type II, HIPAA ([trust.browserbase.com](https://trust.browserbase.com/), checked 2026-10-07) | — |
| Free trial | Free trial or free plan available. ([browserbase.com](https://www.browserbase.com/pricing), checked 2026-10-07) | — |

## Companies that use both

Every proof level counts; the proof level of each side is shown, strongest proofs first. The first public proof is not an adoption date.

| Company | Proof, Browserbase | Proof, Kernel | First public proof, Browserbase |
|---|---|---|---|
| [Vercel](https://www.usedby.ai/companies/vercel.md) | Observed | Observed | On or before February 2026 |
| [Coframe](https://www.usedby.ai/companies/coframe.md) | Observed | Observed | On or before February 2026 |

## Published results

Reviewed stories only; usedby did not measure the figures.

- Kernel: [Stably](https://www.usedby.ai/case-studies/stably-kernel.md): **333x**: “cutting browser cold starts by 333x” (published 2026-05-26)
- Kernel: [Flint](https://www.usedby.ai/case-studies/flint-kernel.md): **167x**: “167x faster cold starts” (published 2026-03-30)

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Source: https://www.usedby.ai/compare/browserbase-vs-kernel · How we check: https://www.usedby.ai/methodology