Browserbase vs Anchor Browser

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.

Anchor Browser combines browser sessions with managed authentication and versioned automation tasks. The task product can start from a demonstration or prompt, then expose a reusable workflow.

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.anchorbrowser.io [6] ↗docs.anchorbrowser.io [7] ↗docs.anchorbrowser.io [8] ↗docs.anchorbrowser.io [9] ↗docs.anchorbrowser.io [10] ↗docs.anchorbrowser.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.

Anchor Browser: Anchor documents browser profiles alongside an Applications and Identities model. A profile retains state; an identity supplies a managed sign-in connection used with browser sessions.

Sources: docs.browserbase.com [1] ↗docs.anchorbrowser.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.

Anchor Browser: Applications define the target website and authentication behavior. Identities attach managed sign-in to sessions. OmniConnect supplies an embeddable flow for end users to sign in from a product.

Sources: docs.browserbase.com [1] ↗docs.anchorbrowser.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.

Anchor Browser: Automation Tasks produce versioned workflows from a prompt or a recorded demonstration. Test and edit the workflow, then invoke it through the task API. Compare this authoring model with writing a handler directly.

Sources: docs.browserbase.com [1] ↗docs.anchorbrowser.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.

Anchor Browser: Compare the selected browser and task offering using Anchor's current commercial terms. Include network usage and the execution path actually used; a batch API's capacity is not a price quote for that batch.

Sources: browserbase.com [1] ↗anchorbrowser.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.

Anchor Browser: Anchor documents a batch-session API as well as asynchronous session creation. A large batch request is distinct from how quickly every browser becomes ready, so measure the ready state and plan-specific conditions.

Sources: docs.browserbase.com [1] ↗docs.anchorbrowser.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 Anchor Browser when you want managed sign-in and an automation task you can demonstrate, edit and invoke from your application.

Anchor Browser tradeoff: A demonstrated automation task and an arbitrary Python handler are different authoring models. Evaluate how much control you need over the code, dependencies and exact workflow.

Sources: docs.browserbase.com [1] ↗docs.anchorbrowser.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 Anchor Browser 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.

Anchor's demonstration or prompt-authored Automation Tasks and Notte's Python Functions suit different authoring preferences. Both document website-authentication tooling, so a credible recommendation must address the actual login and workflow-editing path.

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.anchorbrowser.io [2] ↗docs.notte.cc [3] ↗

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