The only platform that combines self-hosted deployment, AI-native automation, scripted flows, and autonomous testing.
Feature by feature, side by side — every row is a capability enterprise teams ask about, every column is a category leader we get compared to.
| Capability | Karate Agent | Selenium Grid | Playwright | BrowserBase | Testim / Mabl | Browser Use |
|---|---|---|---|---|---|---|
| Self-Hosted | ✓ | — | — | — | — | — |
| AI-Native | ✓ | — | — | — | — | — |
| Scripted + Autonomous | Both modes | Scripted only | Scripted only | Autonomous only | Scripted (visual) | Autonomous only |
| Token Cost Control | Flows = free | N/A | N/A | SaaS pricing | Full LLM every run | — |
| BYO LLM | ✓ | N/A | N/A | — | — | — |
| Plain JS Flows | ✓ | Java/Python (no AI) | Proprietary | — | — | — |
| MCP Support | ✓ | — | — | — | — | — |
| Session Recording | ✓ | — | — | — | — | — |
| Live Browser View | ✓ | — | — | — | — | — |
Horizontal scroll on narrow screens.
Head to Head
The matrix above shows what each tool does. These are the reasons engineering leaders give for moving to Karate Agent.
Infrastructure without intelligence
Brittle locators · manual maintenance
Selenium provides browser infrastructure but no intelligence. Teams still write brittle locator-based tests that break on every UI refactor. Karate Agent adds AI-powered recovery, display-text locators that survive refactors, and flow composition that turns manual test scripts into reusable automation. The grid manages the same containers Selenium does, plus LLM orchestration.
Great API, no AI layer
Write · break · fix · repeat
Playwright offers an excellent scripting API, but no AI layer. Every test must be manually written and maintained. When the UI changes, locators break and someone has to fix them. Karate Agent's Interactive mode lets the LLM write the tests for you, and Autonomous mode recovers from failures that Playwright would simply fail on.
Per-seat pricing, your data leaves your network
Proprietary formats · vendor lock-in
SaaS platforms with per-seat pricing where data leaves your network. Proprietary test formats lock you in. Karate Agent is self-hosted (your data stays on your infrastructure), uses plain JavaScript flows (no proprietary format), and costs only what you spend on LLM tokens — which scripted flows minimize to near-zero.
Cloud sessions, no scripted fast-path
Every run fully autonomous · expensive at scale
BrowserBase provides cloud-hosted browser sessions for AI agents but offers no scripted fast-path. Every run is fully autonomous — expensive and slow for known workflows. Karate Agent's hybrid model runs known workflows at native speed (scripted flows) and reserves the LLM for unknowns. Plus, it's self-hosted — no data leaves your network.
Full LLM every run
100th run costs the same as the 1st
Full LLM on every run — expensive and slow. No scripted fast-path means every execution pays the full token cost. A 12-step workflow costs the same on the 100th run as the first. Karate Agent's hybrid model codifies working patterns as flows: $0 per run for known steps, LLM only for recovery. Most teams reach 90%+ scripted within weeks.
See how Karate Agent stacks up against your current testing stack. Bring your hardest flow — we'll run it live.