Prevent browser UX failures when primary LLM returns 429 by smart client failover

Prevent browser UX failures when primary LLM returns 429 by smart client failover targets a $3.0B = 1.0M businesses × $3K ACV total addressable market with medium saturation and a year-over-year growth rate of 30% YoY = estimated growth for AI developer tools and LLM integration tooling based on industry analyst trends.

Key trends driving demand: LLM adoption across web apps is accelerating — more teams need reliability layers to maintain UX under provider constraints and outages.; Rise of smaller, edge-friendly models and WASM-based inference — this enables on-device fallback strategies that were impractical a year ago.; Multi-provider strategies are becoming common — organizations want provider-agnostic tooling to avoid single-vendor outages and to optimize cost.; Developers prefer SDKs with strong UX primitives rather than low-level routing tools — this shifts demand towards products that handle browser behavior and response staging..