Browser Use
Browser Use · Ranked #5 of 7 in Unofficial APIs
The most-adopted open-source browser agent, with a free cloud tier and public pricing, but it drives the UI rather than producing a durable API contract.
Fast prototyping against API-less UIs
Overview
Browser Use is the default answer developers reach for when software has no API, and it is included here as the honest baseline the API-generation vendors are competing against. It is open source with roughly 108,000 GitHub stars as of August 2026, the library is free, and the only cost of the self-hosted path is model tokens, which on a cheap model runs to pennies per task. Browser Use Cloud publishes its tiers: Free with 3 concurrent sessions, Dev at $29/mo for 25, Business at $299 for 200, Scaleup at $999 for 500, with pay-as-you-go task initialisation around $0.01.
It is genuinely excellent for prototyping and for low-volume internal flows, and its 89.1% WebVoyager success rate is the best-known number in agentic browsing. That number is also self-reported and has proved hard for third parties to replicate, and the benchmark itself runs against cooperative sites without aggressive bot protection, which is not what an authenticated enterprise portal looks like.
The structural problems are the ones this whole category exists to solve. Latency is seconds per click, so a 30-step workflow is slow in a way users notice. Every screen the model looks at costs tokens, which compounds badly at volume. Vendor redesigns break the automation because it is coupled to the UI. And running hundreds of logged-in browser sessions in parallel is its own infrastructure problem. Browser Use scores well on documentation, ecosystem and accessibility, and loses this category on the dimension that matters most: whether the integration is still working next quarter.
How this score is derived
The APIbenchmarks Index is a weighted sum of four dimensions, each scored on an absolute 0–100 reference scale. See the methodology for every mapping.
| Dimension | Score | Weight | Contribution |
|---|---|---|---|
| Documentation & DXGood public docs with quickstarts and examples, backed by an unusually large community (~108k GitHub stars) that fills the gaps. Not as complete as the mature commercial vendors on production and auth guidance. | 84 | 30% | 25.2 |
| ReliabilityThe category's weak point. Coupled to the UI, so vendor redesigns break it; seconds-per-click latency compounds across multi-step workflows; parallel logged-in sessions are an infrastructure problem in themselves. The 89.1% WebVoyager score is self-reported, hard for third parties to replicate, and measured on cooperative sites without aggressive bot protection. | 72 | 25% | 18.0 |
| Ecosystem & SDKsThe largest community in this set at roughly 108,000 GitHub stars, a Python library, a cloud API, MCP support, and a dense surrounding ecosystem of forks and integrations. Model-agnostic, so it composes with any LLM provider. | 88 | 25% | 22.0 |
| AccessibilityFree and open source with only model-token costs on the self-hosted path, plus fully published cloud tiers (Free / $29 Dev / $299 Business / $999 Scaleup) and ~$0.01 pay-as-you-go task initialisation. Nothing to negotiate before starting. | 88 | 20% | 17.6 |
| APIbenchmarks Index (ABI) | 82.8 | ||
Table 1. Derivation of the ABI for Browser Use. Contribution = score × weight; the index is their sum.
At a glance
- Vendor
- Browser Use
- Pricing model
- Open source + cloud subscription ($29-$999/mo)
- Free tier
- Open-source library free; Cloud free tier with 3 concurrent sessions
- Official SDKs
- 4 languages
Pricing
| Open source | $0 | Self-hosted library; you pay only model-token costs. |
| Cloud Free | $0 | 3 concurrent sessions. |
| Dev | $29/mo | 25 concurrent sessions. |
| Business | $299/mo | 200 concurrent sessions. |
| Scaleup | $999/mo | 500 concurrent sessions. Pay-as-you-go task initialisation ~$0.01 plus per-step model costs. |
Key features
- •Open-source Python browser agent library
- •Cloud-hosted agent runtime with API
- •Model-agnostic LLM support
- •MCP support
- •Concurrent session management (3-500 by tier)
- •Pay-as-you-go task execution
- •Structured output extraction from pages
Official SDKs
Strengths & trade-offs
- +Free and open source; roughly 108,000 GitHub stars as of August 2026
- +Fully published cloud pricing: Free tier, $29/mo Dev, $299/mo Business, $999/mo Scaleup
- +Self-hosted cost is model tokens only, pennies per task on a cheap model
- +Best-known agentic-browsing result: 89.1% on WebVoyager (self-reported)
- +Model-agnostic and composes with any LLM provider
- +Fastest path from zero to a working prototype against a UI with no API
- +Large community and dense surrounding ecosystem
- –Coupled to the UI, so vendor redesigns break the automation
- –Seconds-per-click latency, which compounds painfully across multi-step workflows
- –Token cost scales with every screen the model looks at, punishing at volume
- –Running hundreds of logged-in browser sessions in parallel is its own infrastructure problem
- –The 89.1% WebVoyager figure is self-reported, hard to replicate, and measured on cooperative sites without aggressive bot protection
- –Produces an automation script, not a documented, maintained API contract
- –You own the maintenance burden entirely on the self-hosted path
What developers say
Very strong developer enthusiasm; production reliability is the standing caveat
Widely covered as the most important open-source browser agent, praised for how quickly it gets a working prototype against any UI. Third-party reviewers consistently qualify the headline benchmark and flag UI drift, latency and token cost as the reasons teams move off it for production integrations.
“This widely quoted 89% WebVoyager result is self-reported and has proved hard for third parties to replicate.”
Key figures
| WebVoyager success rate (self-reported) | 89.1% | Browser Use ↗ |
| GitHub stars | ~108,000 (August 2026) | GitHub ↗ |
| Cloud entry price | Free tier (3 concurrent sessions); Dev $29/mo | Browser Use ↗ |
| Task initialisation cost | ~$0.01 plus per-step model costs | Browser Use ↗ |
Compare Browser Use head to head
Sources
- https://browser-use.com
- https://docs.browser-use.com
- https://github.com/browser-use/browser-use
- https://www.digitalapplied.com/blog/open-source-browser-computer-use-agents-2026
- https://www.tinyfish.ai/blog/ai-browser-agents
- https://supergood.ai/blog/what-is-an-unofficial-api
Figures last verified 2026-08-12. Spotted an error? corrections@apibenchmarks.com