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Browserbase Runtime

Infrastructure service

by Browserbase

Sandboxed, isolated hosting for agent code deployed to Browserbase (Browserbase Functions), so an agent runs next to the browser session it controls instead of on a separate server.

Find alternatives to Browserbase Runtime

What it does

• Agent orchestration

Features 4

• Sandboxed by defaultEvery agent runs in its own isolated environment with no bleed between executions.
• Stateless and cleanNo leftover cookies, sessions or cached state carry into the next run.
• Built for concurrencyScales to thousands of parallel agent deployments without provisioning infrastructure.
• Failure-safeCrashed runs do not take down adjacent agents or corrupt shared state.

Sources

Pricing

Pricing page · 10 Oct 2026

Pricing page plan cards read 2026-10-10: Free $0/mo, Developer $20/mo, Startup $99/mo, Scale custom. "Runtime | included" on every card, Free included (Free sessions up to 15 minutes); no separate Runtime meter is published.

Description

Official documentation · 10 Oct 2026

"Runtime gives your agents a place to run at scale: sandboxed, isolated, and ready for production workloads from day one." Functions post: "Functions let you deploy agents and automations directly to Browserbase and run it next to the browser session it controls."

What it does

Official documentation · 10 Oct 2026

"You write the agent. Runtime runs it."

Sold within

Pricing page · 10 Oct 2026

"Runtime: Browserbase Functions | Yes | Yes | Yes | Yes" across Free, Developer, Startup and Scale.

Name

Pricing page · 10 Oct 2026

Plan comparison row "Runtime: Browserbase Functions"; the Runtime page links to the Functions docs. Launch post "Browserbase Functions" (2026-02-10).

URL

Official documentation · 10 Oct 2026

Product page "Runtime | Browserbase", in the site menu as Runtime.

Deployment

Official documentation · 10 Oct 2026

Runs on Browserbase's infrastructure.

Interfaces

Official documentation · 10 Oct 2026

Functions are written with the TypeScript SDK; the Browse CLI page lists "deploy functions" among its commands.

Intended for

Official documentation · 10 Oct 2026

Developers deploying agents.

Also from Browserbase

• Browserbase Infrastructure service

  Cloud browsers, search, fetch and a managed runtime that AI agents use to browse, fill forms and act on websites, with session replays for debugging.

• Browserbase Agents AI agent

  Managed browser agent created from a natural-language prompt and run with one API call; it navigates sites, fills forms and returns structured JSON, with browsers, search, verified identity and proxies included.

• Browserbase Search API API service

  Real-time web search API for agents that returns ranked, token-optimised results (URL, title and favicon per page) so an agent can pick which sites to fetch or browse next.

• Browserbase Fetch API API service

  API that reads a URL live at request time and returns it as clean markdown, HTML or JSON for an agent's context, with ads and navigation stripped and an Extract option for structured fields.

• Browserbase Model Gateway API service

  Routes a Stagehand agent's model calls to OpenAI, Anthropic and Gemini through the Browserbase API key, handling billing, retries and rate limits, with tokens charged at the providers' own prices.

• Browserbase Identity Infrastructure service

  Gives each Browserbase session a cryptographically verified agent credential through Web Bot Auth, so partner sites and anti-bot providers let the agent in, with CAPTCHA solving and reusable logged-in contexts.

• Browserbase Observability Infrastructure service

  Debugging view over every Browserbase agent session: live view, action-by-action replay, structured logs of network requests, console output and errors, and traces of each agent decision.

• Director Application

  Director turns plain-English instructions into browser agents that can run on a schedule.

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