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AskUI excels when you need to automate applications where UI elements change frequently or accessibility hooks are unavailable. You write instructions in natural language, and the AI locates elements visually — that's powerful for regression testing and RPA on legacy software. But if your tests require pixel-level precision or sub-second interactions, AskUI's vision models may introduce latency. Compared to Selenium/Appium, AskUI requires no selector updates when the UI shifts; it self-heals. However, Selenium is faster for simple, stable UIs and has a larger community. For teams already using traditional frameworks, AskUI serves as a complementary tool for hard-to-automate scenarios rather than a full replacement. We'd reach for AskUI when dealing with dynamic web apps, cross-platform mobile testing, or orchestrating multi-step workflows that span different apps. The AgentOS handles session state, which reduces boilerplate. The free Starter tier lets you prototype on one device, but scaling to teams requires contacting sales — that opaque pricing may stall adoption. Where it bites: if you're purely backend testing with no UI, look elsewhere. Also, the learning curve for writing effective instructions and debugging vision failures is non-trivial. Non-technical users will struggle without scripting experience. AskUI is a tool for automation engineers who value resilience over raw speed.