Browserbase vs Browserless

The decision

Start with the product contracts for saved browser state, credential handling, website sign-in, code execution. Different labels do not establish different functionality; compare the implementation and conditions behind each one.

Browserbase provides managed browser sessions and TypeScript Functions that run next to a browser. Contexts preserve browser state, while its identity and secret tools address different parts of the sign-in workflow.

Browserless provides hosted browser access and self-hosted options. Its documentation separates BaaS, BrowserQL and BAP, with different ways to control sessions, preserve state and use credentials.

At a glance

Sources: docs.browserbase.com [1] ↗docs.browserbase.com [2] ↗docs.browserbase.com [3] ↗docs.browserbase.com [4] ↗docs.browserbase.com [5] ↗docs.browserless.io [6] ↗docs.browserless.io [7] ↗docs.browserless.io [8] ↗docs.browserless.io [9] ↗docs.browserless.io [10] ↗docs.browserless.io [11] ↗

What survives a session

Browserbase: Contexts preserve browser data between sessions. Associate the intended Context with each user's browser and decide which sessions may update it; a Context is distinct from a live running session.

Browserless: Browserless documents authenticated profiles and reconnect flows. A retained profile and a reconnectable live browser preserve different state; choose the mechanism based on whether the running page must continue.

Sources: docs.browserbase.com [1] ↗docs.browserless.io [2] ↗

Website login

Browserbase: The identity documentation covers website authentication and reuse of login state. Contexts and Function Secrets serve different roles: retained browser state versus values available to executing code.

Browserless: BAP documents loadSecret() with a configured 1Password integration. Profiles provide another way to reuse authenticated state. Check the selected product's prerequisites before treating these as interchangeable login options.

Sources: docs.browserbase.com [1] ↗docs.browserless.io [2] ↗

Where the code runs

Browserbase: A Function is TypeScript code published with an entry point. Invocation starts asynchronously, creates a browser, passes its connection URL to the handler, and stores the result, logs and session ID. Function webhooks report status changes.

Browserless: Browserless supports several code and control surfaces. Compare the exact runtime endpoint or external runner you intend to use, including its language, deployment, versioning and invocation contract.

Sources: docs.browserbase.com [1] ↗docs.browserless.io [2] ↗

Published browser measurements

These are the latest provider runs in the saved BrowserArena snapshot checked on October 18, 2026. Dates and runner environments can differ. A lifecycle test opens, connects, navigates and releases a browser; the throughput test runs a separate browser action sequence. Neither measures managed authentication or deployed Function reliability.

Use these observations to choose what to test in your application. An account-configuration failure, an incompatible page action and a timed-out navigation require different interpretations. BrowserArena is maintained by Notte and publishes its source and methodology.

Sources: browserarena.ai [1] ↗browserarena.ai [2] ↗github.com [3] ↗

Pricing model

Browserbase: Compare the public plan's included browser allowance and overage with the workflow's duration. Include proxy traffic and any separately priced services; an Arena browser-hour estimate does not describe the whole Browserbase bill.

Browserless: Browserless Cloud uses units. Browser time consumes one unit per 30-second increment, rounding partial increments upward; proxy traffic and other services also consume units. Included units and overage depend on the plan.

Sources: browserbase.com [1] ↗docs.browserless.io [2] ↗

Capacity and limits

Browserbase: Browser and Function constraints have separate documentation. Check the account's concurrent browser limit, the Function runtime cap and the Function region rather than assuming a browser entitlement covers every execution path.

Browserless: Account concurrency and session routing affect a Browserless deployment. Use its concurrent-session guidance, and distinguish shared cloud, managed dedicated and self-hosted capacity.

Sources: docs.browserbase.com [1] ↗docs.browserless.io [2] ↗

Which approach fits?

Choose Browserbase when you want to deploy TypeScript browser logic or already use Browserbase's browser and Stagehand tooling.

Browserbase tradeoff: An identity feature, a persisted Context and a Function secret solve different problems. Select the required combination instead of treating all three as automatic login.

Choose Browserless when you need a browser service that fits existing automation libraries or a self-hosted deployment, and can select the appropriate Browserless product.

Browserless tradeoff: The connection route and product matter. A feature documented for BAP or a managed dedicated deployment should not be assumed to exist on every shared BaaS endpoint.

Sources: docs.browserbase.com [1] ↗docs.browserless.io [2] ↗

Check the browser connection

Install playwright-core in your application and provision a session through the provider's documented creation flow. Run this smoke test from the intended controller region with the returned CDP endpoint. It checks connection and navigation, not login, rendering parity or a complete business workflow.

Keep browser connection URLs on your backend. After the test, release the owned session through the provider's API. Product-specific lifecycle APIs and profile identifiers are not portable between providers.

import { chromium } from "playwright-core";

// Provision the owned browser using the provider's documented session API.
// Keep the connection URL in your backend's secret environment.
const endpoint = process.env.BROWSER_CDP_URL;
if (!endpoint) throw new Error("Set BROWSER_CDP_URL for an owned session");

const browser = await chromium.connectOverCDP(endpoint);
try {
  const context = browser.contexts()[0] ?? await browser.newContext();
  const page = context.pages()[0] ?? await context.newPage();
  await page.goto("https://example.com", { waitUntil: "domcontentloaded" });
  if ((await page.title()) !== "Example Domain") {
    throw new Error("The browser did not reach the expected page");
  }
  console.log({ connected: true, expectedPage: true });
} finally {
  await browser.close();
  // Release the owned session with the provider's documented API as well.
  // A disconnected socket alone is not a portable session-cleanup contract.
}

Sources: playwright.dev ↗

Before you switch

Keep the same target workflow when evaluating both products. Separate infrastructure facts from measurements and test the required account state, action sequence and artifacts. A successful connection test does not establish that a long or authenticated task will complete.

Use the focused guides for Browserbase and Browserless below when the deciding requirement is pricing, persistence or code execution. Provider-owned resources such as session IDs, profiles and managed connections need a new mapping during migration.

When Notte belongs on this shortlist

Browserbase's TypeScript Function contract is a reason to retain it when that is the deployed language your team wants. A move to Notte Functions includes a Python execution decision; moving only the browser can leave your existing controller in place.

Choose the Browserless product and deployment before drawing a conclusion from its documentation. BAP, shared browser access and a self-hosted service can have different features; Notte's session and Function resources should be compared with the specific path you would purchase.

Notte: Create an owned browser session, connect Playwright or Puppeteer over CDP, and stop the session when the work finishes. Browser lifecycle management remains necessary even when the control socket disconnects.

Consider this third option when its documented mechanism addresses a requirement left open by the two providers above. A working configuration on either original provider can still be the better choice; compare the task and ownership cost before switching.

Sources: docs.browserbase.com [1] ↗docs.browserless.io [2] ↗docs.notte.cc [3] ↗

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