The Session-Free Alternative to Browserbase

No session to open, control, or close

Browserbase provisions a remote browser your agent (or your Playwright/Puppeteer code) drives step by step for the duration of a session. AlterLab is stateless per request — describe the target URL and desired output, and get results back in one call, with no session lifecycle to manage.

Per-request pricing instead of browser-hours

Browserbase bills by browser-hour, which means idle time within a session still consumes your allotment. AlterLab charges per completed request at the tier the page actually required, so cost tracks work done rather than time elapsed.

Structured output without agent-side scripting

Building an agent that scripts a full browser session (navigation, clicking, waiting, DOM queries) adds significant agent complexity. AlterLab returns structured JSON, markdown, or HTML directly, so the agent's job is simpler: read the response and act on it.

from browserbase import Browserbase

bb = Browserbase(api_key="YOUR_API_KEY")
session = bb.sessions.create(project_id="YOUR_PROJECT_ID")
# Connect Playwright to session.connect_url and script navigation...

import requests

response = requests.post(
    "https://api.alterlab.io/v1/scrape",
    headers={"X-API-Key": "YOUR_KEY"},
    json={
        "url": "https://example.com/dashboard",
        "extract": {"items": [{"name": "string", "status": "string"}]}
    }
)