how sixty compares — Front-end analytics, bundled
Sixty vs Vercel Speed Insights
Real page timings with one checkbox, from the platform you deploy to. It stops at the edge of the browser — nothing under it is measured.
What Vercel Speed Insights is good at
It is already there, it takes one toggle, and the numbers are real — genuine Core Web Vitals from genuine visitors, attributed to routes, with none of the sampling arguments that come with synthetic testing. For finding out whether your pages are slow for the people loading them, it is the shortest path that exists, and it is anonymised in a way that keeps it out of your consent banner.
Vercel Observability adds function-level timings and error rates on top, and if everything you run is on Vercel, that covers the runtime you deploy to without installing anything at all.
Vercel Speed Insights costs $10 per project per month on Pro, plus usage for Observability, as published on their pricing page in August 2026. Sixty is €14.99 a month, flat.
What Sixty does differently
The boundary is the database. Speed Insights measures the browser; Observability measures your functions; neither has anything to say about the query inside the function that started returning thirty thousand rows. For the kind of app this page is written for — a front end, a Postgres, and some functions in between — that is where the regressions live.
The second gap is that page timings are a symptom that arrives late. A query whose result set grew by a thousand times barely moves the clock on a warm database with a small table, so the vitals stay green for weeks, and then real data arrives and the page stops loading. Sixty watches the shape rather than the clock, which is why it can say something on the day of the deploy rather than after the incident.
And nothing in the platform hands you a fix. Sixty's output is a payload for the agent you already have open — the numbers, the query, the stack frames, and which child calls account for the change — so the next step is a diff rather than an investigation.
Side by side
The same eleven questions the full comparison asks of every tool, with the two rows Sixty loses left in.
| What is being compared | Sixty | Vercel Speed Insights |
|---|---|---|
| What you set upBefore it can tell you anything at all. | Nothing. One command, no dashboards, no thresholds | Nothing — a toggle and a component |
| Time to the first findingInstall to a sentence that names a cause. | Your next deploy | Minutes, for page timings |
| Compares one release to the lastAutomatically, without being asked a question. | Yes — every finding is one release against the one before | Partly — you can view timings per deployment |
| Rows per call, queries per renderThe shape of what your database work returns, not how long it took. | Yes, this is the core signal | No — the database is not in scope |
| Page vitals per routeLargest paint, interaction response, layout shift. | Yes, broken down by country | Yes, this is the whole product |
| Failures that report successEmpty results, refused requests, buttons wired to nothing. | Yes — this is most of what it finds | No |
| Evidence handed to your coding agentNot a dashboard to read — a payload the thing that writes your code can act on. | Yes, over MCP, with the numbers and stack frames attached | No |
| Data collected about your usersWhat ends up on somebody else’s server because you installed it. | None. No IDs, no cookies, no URLs, no replay | Speed Insights is anonymised; Web Analytics counts visitors |
| Infrastructure, logs, containersHosts, pods, queues — the layer under the application. | No | Your Vercel functions only |
| Runtimes it measuresServer-side. Browser coverage is separate and mostly universal. | Node and Postgres. Any front end, any backend language | Anything you deploy to Vercel |
| Where the bill startsList price for a comparable product, read August 2026. | €14.99 a month, flat | $10 / project / month |
Which one to pick
Pick Vercel Speed Insights when
- All you want is Core Web Vitals for pages you deploy on Vercel.
- You would rather not add anything: it is a toggle in a dashboard you already use.
- Your app has no database of its own, or nothing behind it worth measuring.
Pick Sixty when
- Your slow page is slow because of what the query behind it returns.
- You want the browser and the database explained by the same finding.
- You deploy somewhere other than Vercel, or in more than one place.
- You want the cause named against a deploy, not a percentile to interpret.
These are not mutually exclusive and the honest answer is often both. Nothing here refuses to run alongside Vercel Speed Insights, and a lot of people keep it.
Questions people actually ask
Does Sixty replace Speed Insights?
For page timings it measures the same things — largest paint, interaction response, layout shift, per route — and adds a country breakdown, so a page that is only slow in Brazil reads as a network problem instead of a mystery. What makes it a replacement rather than a duplicate is that the same finding continues down into the query that caused it.
Does Sixty work outside Vercel?
Yes. The release marker is picked up automatically from Vercel, Render, Railway, Fly and GitHub Actions, and the browser agent needs no server at all — it works with any backend in any language, including apps with no backend of their own.
The other comparisons
Sixty vs Datadog
Everything, for everyone, billed per host. Unbeatable if you run infrastructure; a lot of product to carry if you run one app on Vercel.
Full-stack observability platformSixty vs New Relic
The same breadth as Datadog on a friendlier meter, with a genuinely large free tier — and the same afternoon of setup before it says anything.
Error tracking, plus performanceSixty vs Sentry
Best-in-class for the crash you can see. The gap is the failure that never throws — and what it stores about the person who hit it.
Open-source stack, hostedSixty vs Grafana Cloud
The most flexible and the most work. Prometheus, Loki, Tempo and OpenTelemetry, hosted for you — and still a project rather than a product.