Stagehand
Open-source browser-automation framework by Browserbase (TypeScript core plus Python and Go SDKs). Mixes Playwright-style code with natural-language act/extract/observe; pairs with Browserbase Cloud.
Active · Verified 2026-10-26 · fresh as of 2026-10-26 · 50 cited facts, 7 with a third-party source · 1 recorded change · Suggest a correction
At a glance
- Tier
- T1
- Section
- Computer-use & desktop agents
- Created
- 2024 (Browserbase release) repo fix
- Latest release
- v3.7.3 (2026-08-28) — @browserbasehq/stagehand repo fix
- Pricing
- OSS free; Browserbase Cloud handles runtime repo fix
- Funding
- Maintained by Browserbase ($40M Series B Q4 2024; Kleiner Perkins) third-party fix
- Freshness
- 2026-10-26 fix
- Layer
- agent-infra repo fix
- Licensing
- open-source repo fix
- Deployment locus
- computer-use vendor fix
- SDK languages
- go, python, typescript repo fix
- Protocols
- mcp-server vendor fix
- Developer activity
- OpenRank 17.87 (12-mo avg 21.07) · 57 participants — 2026-09 third-party fix
When to use
Optimised for: Playwright-replacement with AI verbs (act / extract / observe)
Anti-fit: TS-only; not a finished agent — caller wires logic; tied closely to Browserbase ecosystem
Pros & cons
Pros
Browserbase-backed OSS; clean act/extract/observe primitive; growing TS-agent ecosystem.
Cons
TS-only (no Python parity); ties best with Browserbase Cloud (vendor adjacency).
Claims & capabilities
Maintained by Browserbase Inc.; AI + deterministic hybrid
Technical surface
- API surface
- TS API (act/extract/observe); npm: @browserbasehq/stagehand
- Backend storage
- Local Playwright state; Browserbase-managed when cloud-hosted
- Deployment
- Both (self-hosted + managed cloud) — library runs locally; Browserbase cloud browsers optional
- Embedding model
- not applicable — not a memory product
- Multi-tenancy
- Per-process in OSS; per-tenant in Browserbase Cloud
- MCP
- yes — hosted Browserbase MCP server exposes navigate/act/observe/extract to any MCP client
- A2A
- searched not found
- OpenTelemetry
- searched not found
Compare Stagehand with…
Alternatives to Stagehand → live options ranked by shared design, licence, hosting and MCP support
Similar systems
Other computer-use & desktop agents in the catalog, ranked by inbound references.
- Browser Use T1
Python library that turns any LLM into a browser agent — extracts DOM into a structured representation the LLM can act on (rather than pure screenshot). Browser Use Inc. raised $17M seed Q1 2025 (Felicis); cloud product at cloud.browser-use.com. Project is one of the most-starred browser-agent OSS repos.
- Hyperbrowser T2
Cloud-hosted headless browser API tuned for AI agents — captcha solving, stealth mode, session recordings. Y Combinator S24; pitched as a faster / cheaper Browserbase alternative. Used as substrate by agents that need browser execution but don't want to run their own Chromium fleet.
- UI-TARS T2
ByteDance Seed's open-source GUI-agent foundation model — released Jan 2025; trained end-to-end on screenshot → action pairs. Comes with UI-TARS-Desktop (Electron app) that runs the model against the user's screen. SOTA on OSWorld at release; weights on HuggingFace.
- Anthropic Computer Use T1
Anthropic's API-surface capability that lets Claude control a virtual desktop — see screenshots, type, click. Launched 2024-10 as a public beta. Not a finished IDE itself; it's the substrate that other harnesses (and Anthropic's own Claude apps) use to operate a computer.
- Skyvern T2
Open-source autonomous browser agent that uses computer vision + LLMs to navigate websites. Workflow-based: agents follow recorded plans that adapt to layout changes. Skyvern Inc. raised $4.5M seed (Sep-2024, Felicis lead). Self-hostable; cloud version on skyvern.com.
- Bytebot T3
Open-source desktop-agent runtime that runs an LLM-controlled Linux desktop inside Docker — uses xdotool / X11 capture for control. Pitched as the 'self-hosted Operator' alternative; agent sees a real desktop screen, not just a browser.
Sources (49 cited facts, 7 third-party)
Each fact links to the page it came from; the badge says who published it (how to read sources).
- What it is OSS browser-automation framework (Browserbase OSS) vendor
- What it does & what's distinct Open-source browser-automation framework by Browserbase (TypeScript core plus Python and… repo
- Claims / benefits Maintained by Browserbase Inc.; AI + deterministic hybrid repo
- Modalities DOM text + screen images vendor
- Created 2024 (Browserbase release) repo
- Latest release v3.7.3 (2026-08-28) — @browserbasehq/stagehand repo
- License MIT repo
- GitHub browserbase/stagehand — ~25.5k stars, last commit 2026-08+ repo
- Mindshare Backed by Browserbase distribution; popular in TS agent stacks vendor
- Funding Maintained by Browserbase ($40M Series B Q4 2024; Kleiner Perkins) third-party
- Customers / scale Browserbase customers + OSS users; integrations with Vercel / OpenAI vendor
- Pricing OSS free; Browserbase Cloud handles runtime repo
- Compliance OSS inherits caller compliance; Browserbase Cloud SOC 2 Type II third-party
- Data handling OSS — your infra; Browserbase Cloud per its data policy vendor
- Deployment Both (self-hosted + managed cloud) — library runs locally; Browserbase cloud browsers op… repo
- HQ US (Browserbase, New York) third-party
- Founders / pedigree Paul Klein IV (Browserbase CEO); Stagehand contributed by Browserbase team third-party
- Performance WebVoyager evals in repo; Browserbase WebBench results vendor
- Code/weights release OSS — github.com/browserbase/stagehand repo
- API surface TS API (act/extract/observe); npm: @browserbasehq/stagehand vendor
- Backend storage Local Playwright state; Browserbase-managed when cloud-hosted vendor
- Multi-tenancy Per-process in OSS; per-tenant in Browserbase Cloud vendor
- Encryption TLS; cloud-managed at rest third-party
- SSO / RBAC via Browserbase Cloud (SAML/SSO Enterprise) third-party
- Versioning Scripts versioned in user repo vendor
- Namespace primitives per-script / per-context vendor
- MCP support yes — hosted Browserbase MCP server exposes navigate/act/observe/extract to any MCP client repo
- Import / export Scripts are TS / portable vendor
- Validated verticals scraping, agent infra, QA, browser automation vendor
- Time to running <10min (npm install + API key) vendor
- Anti-fit TS-only; not a finished agent — caller wires logic; tied closely to Browserbase ecosystem vendor
- Optimised for Playwright-replacement with AI verbs (act / extract / observe) vendor
- Adjacent infrastructure Playwright; Browserbase Cloud; LLM provider APIs vendor
- Pros Browserbase-backed OSS; clean act/extract/observe primitive; growing TS-agent ecosystem. vendor
- Cons TS-only (no Python parity); ties best with Browserbase Cloud (vendor adjacency). vendor
- Project & sources stagehand.dev; github.com/browserbase/stagehand vendor
- commit-trajectory [{"ym":"2025-02","cum":328},{"ym":"2025-03","cum":392},{"ym":"2025-04","cum":438},{"ym":… repo
- cost-input-usd-per-mtok 0 repo
- cost-output-usd-per-mtok 0 repo
- cost-tier free repo
- cost-pricing-model free-tier repo
- cost-last-verified 2026-06-29 repo
- architecture-deployment-locus computer-use vendor
- licensing-bucket open-source repo
- positioning-platform-vs-product platform vendor
- taxonomy-three-layer-rollup agent-infra repo
- developer-activity-opendigger {"activity":208.33,"as_of":"2026-09","openrank_12mo":21.07,"openrank_current":17.87,"par… third-party
- sdk-languages go,python,typescript repo
- protocol-support mcp-server vendor
What changed
Changes to this record's lifecycle, licence, release, pricing and hosting facts, from the catalog's git history. Subscribe (Atom)
- 2026-10-26
- Latest release “v2.x; active monthly releases (npm: @browserbasehq/stagehand)” → “v3.7.3 (2026-08-28) — @browserbasehq/stagehand” source
- Deployment “Library — runs anywhere Playwright runs; Browserbase Cloud for managed” → “Both (self-hosted + managed cloud) — library runs locally; Browserbase cloud browsers optional” source
- MCP support “Composes with Browserbase MCP server” → “yes — hosted Browserbase MCP server exposes navigate/act/observe/extract to any MCP client” source
Related systems
References (8)
- Browserbase integrates with — Stagehand docs document the Browserbase MCP Server, which is built on Stagehand and runs on Browserbase infrastructure. (verified 2026-10-29)
- Claude Code (Anthropic) integrates with — Stagehand docs have a Claude Code (Anthropic) integration page. (verified 2026-10-29)
- CrewAI integrates with — Stagehand docs have a CrewAI integration page. (verified 2026-10-29)
- Cursor (IDE) integrates with — Stagehand docs have a Cursor (IDE) integration page. (verified 2026-10-29)
- LangChain (framework) integrates with — Stagehand docs have a LangChain (framework) integration page. (verified 2026-10-29)
- Mastra integrates with — Stagehand docs have a Mastra integration page. (verified 2026-10-29)
- OpenAI Codex CLI integrates with — Stagehand docs have a OpenAI Codex CLI integration page. (verified 2026-10-29)
- Vercel AI SDK integrates with — Stagehand docs have a Vercel AI SDK integration page. (verified 2026-10-29)
Referenced by (4)
- CrewAI integrates with — CrewAI docs have a Stagehand tool page. (verified 2026-10-29)
- Laminar integrates with — Laminar integrations docs have a Stagehand observability page. (verified 2026-10-29)
- LangChain (framework) integrates with — LangChain docs have a Stagehand browser tool integration page. (verified 2026-10-29)
- Mastra integrates with — Mastra repo ships the Stagehand browser package. (verified 2026-10-29)