Theo: model routers can't gauge task complexity from prompts alone; escalation-based routing proposed
nbaschez · x · 2026-09-26
Theo argues that model routers like Jev are "system one" models—they categorize but don't reason. Task complexity is nearly impossible to judge from a prompt alone: you can't tell if "port this to Rust" targets a 100-line file or a million-line codebase, and the router has zero context on the agent's tools and environment.
Replying, nbaschez suggests the ideal router starts with a cheap model that learns to escalate as needed, with a stronger model acting as a checker that can also escalate.
Related event: Model Routers Can't Judge Task Complexity from Prompts Alone(2 posts)→
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