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Head to head · Browser automation · October 2026 research run

Hyperbrowser vs Selenium

Selenium scores 73.6 (BB) on agent readiness against Hyperbrowser's 66.9 (B), and leads in 5 of 7 scored categories. Hyperbrowser leads on payments & pricing. Both do browser automation. Hyperbrowser accepts x402. Selenium doesn't.

Best browser automation tools for AI agents · All 120 browser comparisons

HyperbrowserS2 Labs Inc. · HTTP API B66.9/100#284 of 1076 SeleniumSelenium project (Software Freedom Conservancy) · SDK + MCP BB73.6/100#90 of 1076

Which one, for what

Hyperbrowser B

Best for Agents that need a cloud browser by the minute plus cheap fetch and search, especially wallet-holding agents with no account.

Ahead on

  • Payments & pricing, 94 against 60

Also in its favour

  • An agent can pay per call over x402, with no account
  • A hosted endpoint, with nothing to install
  • Runs on your own machine
  • Free to start without a card

Watch for

The official MCP server's last npm release is 1.0.25 of 13 April 2025, and it isn't in the official MCP registry

Selenium BB

Best for Agents that write test or automation scripts in any of five languages, and teams with a Grid.

Ahead on

  • Reliability, 90 against 65
  • Schema & documentation, 89 against 68
  • Maintenance & community, 94 against 79
  • Transparency & trust, 74 against 64

Also in its favour

  • Agent-ready, a grade of BB or better
  • No key needed to call it
  • Open source

Watch for

No MCP server from the project. The docs point to community servers and say they are third-party

Score by category

CategoryWeight this runHyperbrowserSeleniumEdge
Reliability16%206590Selenium +25
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.26889Selenium +21
Agent ergonomics13%16.26770Selenium +3
Security & auth14%17.54443Hyperbrowser +1
Payments & pricing10%12.59460Hyperbrowser +34
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87994Selenium +15
Transparency & trust7%8.86474Selenium +10
Negative events≤1500
TotalB 66.9/100BB 73.6/100

Facts side by side

FactHyperbrowserSelenium
KindHTTP APISDK + MCP
VendorS2 Labs Inc.Selenium project (Software Freedom Conservancy)
Hosted endpointhttps://api.hyperbrowser.aino (local only)
TransportsHTTP, stdioHTTP
AuthOAuth or keyNone
PricingFreemiumFree
x402yesno
LicenceProprietary service under S2 Labs' terms of service. The Node and Python SDKs and the MCP server are MIT, and HyperAgent is AGPL-3.0Apache-2.0
Read-only variant documentednono
llms.txtyesyes
Last release2026-10-082026-10-09
Terms last updatedcouldn't be readno document linked
Privacy policy last updatedcouldn't be readno document linked
Customer content may train modelscouldn't be read
Terms restrict automated accesscouldn't be read
Terms restrict benchmarkingcouldn't be read
Terms or service can change without noticecouldn't be read
Arbitration or class-action waivercouldn't be read
Popularity89k npm/wk, 73k PyPI/wk35k stars, 1.8M npm/wk, 6.9M PyPI/wk

Verdicts

Hyperbrowser

Sessions, Fetch and Search can be bought by x402 at api.hyperbrowser.ai with USDC on Base or Solana and no account, and unit prices are public. The official MCP server was last published in April 2025, no request rate limits or SLA are published, and the privacy notice covers only the website.

Selenium

Selenium is stable, Apache-2.0 software on 4.51.0 with bindings in five languages, CI passing on trunk, an llms.txt and an agent guide added in September 2026. It has no MCP server of its own, Selenium Manager sends usage statistics by default, and Grid accepts unauthenticated sessions unless a username and password are set.

Before you call either

Hyperbrowser

  1. With a wallet and no key, POST to https://api.hyperbrowser.ai/x402/session and read the PAYMENT-REQUIRED header. Sessions are prepaid for 5 to 60 minutes with no refund
  2. Save the x402 creation response. It holds the only copy of the connection tokens, and managementToken is what stops the session
  3. Stop sessions explicitly in cleanup code. Browser time bills per second until the timeout
  4. Use Fetch at $0.001 a page for static pages and keep browser sessions for pages that need interaction
  5. Add &keepAlive=true to wsEndpoint to reconnect after a CDP disconnect. Treat that URL as a secret because it carries the session token

Selenium

  1. Install with pip install selenium (Python 3.10 or later) and let Selenium Manager fetch drivers. Do not set driver paths
  2. Use WebDriverWait with expected conditions, never fixed sleeps, and do not mix implicit and explicit waits
  3. Set SE_AVOID_STATS=true to stop Selenium Manager sending usage statistics
  4. Point coding agents at https://www.selenium.dev/llms.txt. Most Selenium 2 and 3 era examples use removed APIs
  5. Set --username and --password before exposing a Grid beyond localhost. Check http://localhost:4444/status before creating sessions

Questions

Which is better for AI agents, Hyperbrowser or Selenium?

Selenium scores 73.6 (BB) on agent readiness against Hyperbrowser's 66.9 (B), and leads in 5 of 7 scored categories. Hyperbrowser leads on payments & pricing.

Can an agent call Hyperbrowser and Selenium without installing anything?

Hyperbrowser has a hosted endpoint at https://api.hyperbrowser.ai. No hosted endpoint is listed for Selenium.

Are Hyperbrowser and Selenium open source?

No open-source release is listed for Hyperbrowser. Selenium is open source (Apache-2.0).

Other comparisons with Hyperbrowser or Selenium

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