Browserless renders a real browser in the cloud and hands it to your automation code. Point Puppeteer, Playwright, or Selenium at it and you get a full Chrome session, drop-in, with a serious stealth stack and CAPTCHA solving behind it. When a page only exists after JavaScript runs, that is exactly the machinery you want.
The bill for that machinery is time. Browserless meters how long the browser stays open and charges by the second, bundled into units, on top of proxy bandwidth and CAPTCHA solves. Wire attacks the same job from underneath. Instead of driving the browser a site renders for a human, Wire calls the background API that site's own frontend already talks to, and returns typed JSON. The difference is not better or worse. It is which layer you pay for: the presentation layer that paints a page, or the network layer beneath it.
Two layers, two bills
A modern web page is a browser rendering the results of API calls. Browserless operates at the top of that stack. Every request spins up a genuine browser, loads the page, runs its scripts, and lets your code read the painted DOM. That is why it works on almost anything, and also why it bills the way it does.
Browserless prices in Units, where one Unit covers up to 30 seconds of browser time on a connection. A 75-second session costs 3 Units. Roughly 98% of sessions finish inside a single Unit, so most calls stay cheap, but the meter is running on wall-clock time, not on work done. A slow-loading page, a retry, or a reconnect all cost more because they keep the browser alive longer. On top of the browser clock come residential proxy at 6 Units per MB, datacenter proxy at 2 Units per MB, and CAPTCHA solves at 10 Units each.
Wire sits at the network layer. Most sites without a public API still run one privately: the endpoint their own React or Vue frontend calls to fill the page. Wire wraps that endpoint as a named action, skips the browser entirely, and returns structured JSON. Because there is no browser to keep open, there is no clock to run. Wire bills per action, and the cost driver is how many actions you call, not how long a page took to paint.
What you point each one at
Browserless takes your automation script. You write the Puppeteer or Playwright code, or use BrowserQL, its stealth-first GraphQL language, and Browserless runs it against a hosted browser. The flexibility is total, and so is the maintenance: when a site redesigns, your selectors break and the script is yours to fix.
Wire takes an action from a maintained catalog. It currently covers 958 sites and 5,242 read and write actions, and Anakin patches those actions upstream when a target changes its internals. A redesign that would snap a scraping script is absorbed on Anakin's side, so the action keeps returning the same typed shape. You call it and move on.
curl -s -X POST https://api.anakin.io/v1/wire/task \
-H "X-API-Key: $ANAKIN_API_KEY" \
-H "Content-Type: application/json" \
-d '{"action_id": "github.create_issue", "credential_id": "cred_ci_bot", "params": {"title": "Nightly run failed"}}'The call returns a job_id. Poll GET /v1/wire/jobs/{id} until it completes, and the result comes back as typed JSON rather than a page you still have to parse. That action, github.create_issue, also makes the other half of the point: Wire actions write, not just read. It costs 2 credits per call.
Structured output versus a painted page
Browserless returns what a browser sees. Its REST helpers can give you rendered HTML, a PDF, a screenshot, or scraped fields, but the raw material is a DOM you selected against. When the page changes, your selection logic is what has to keep up.
Wire returns structured JSON and, in its own words, never raw HTML. The shape is defined by the action, not by whatever markup the site shipped this week. For an agent or a pipeline that expects typed fields, that removes the parse-and-hope step between fetching a page and using it.
Handling credentials
Both tools can act as a logged-in user, and this is where the architectures diverge most sharply. Browserless persists browser storage state, cookies and localStorage, in a userDataDir you can save and reload. That is effectively a cloud cookie jar: convenient, and enough to keep a session alive, but the session material lives in browser profile state rather than a dedicated secret store.
Wire uses a vault. You save an account once as a named identity, and your agent passes only the reference. Wire resolves it inside the vault and injects the real session at runtime. The secret is AES-256 encrypted at rest and is never returned by the API. Your code holds a handle, not a credential, and the actual session never crosses back over the wire to your side.
Compliance
On the core certifications this is close. Both hold SOC 2 Type II and both are GDPR-aligned; Browserless additionally offers a DPA and HIPAA BAA on Enterprise. The one clear gap is ISO 27001. Browserless does not list ISO 27001 on its trust page, while Anakin holds ISO 27001:2022 for Wire. If an ISO 27001 certificate is a procurement requirement for your team, that is a real and specific difference, and it is the extent of the compliance edge worth claiming.
Where each one belongs
| Browserless | Wire | |
|---|---|---|
| Layer | Presentation (renders a full browser) | Network (wraps the backend API) |
| What you point it at | Your Puppeteer/Playwright/Selenium script | A maintained catalog action |
| Who maintains it | You maintain the scripts | Anakin patches actions upstream |
| Billing | Browser-time Units + proxy per MB + CAPTCHA per solve | Per action, on success |
| Cost driver | How long the browser stays open | How many actions you call |
| Output | Rendered DOM, HTML, PDF, screenshot | Typed JSON, never raw HTML |
| Credentials | Persisted browser storage state | Vault-backed named identity (AES-256) |
| Read and write | Yes, via scripted browser | Yes, typed read and write actions |
| Compliance | SOC 2 Type II, GDPR, BAA | SOC 2 Type II, ISO 27001:2022, GDPR |
| Best when | The page needs a real browser | The site already has a usable backend API |
The honest framing
The critique that a full browser per request is slow and costly at scale is worth naming its source: it comes most loudly from Scrapfly, a competitor with its own reasons to make it. It is a fair point about the model, but it is not a neutral one, and Browserless has real answers. Its stealth stack survives anti-bot systems that a bare fetch cannot touch, its concurrency scales high on the top plans, and its OSS core is free to self-host. When you genuinely need a rendered browser, for a JavaScript-heavy SPA, visual testing, PDFs and screenshots, or a defense that only a stealthed real browser gets past, that is the correct tool and Wire is not a substitute for it.
The honest split is by need, not by winner. Reach for a rendered browser when the page truly requires one. Anakin itself offers a Browser API for exactly those cases, so the choice is not Anakin versus Browserless so much as which Anakin surface fits. Reach for Wire when the site already exposes a usable backend API that its own frontend calls, because then the browser is overhead you are paying for by the second. One bills the time a browser stays open. The other bills the action, and skips the browser to get there. The right question is whether your target needs the page painted at all, and that is what Anakin is built to let you answer either way.