Developer tools1 sources·Published
Prompt complexity classifier to route requests between cheap and frontier LLMs
Developers default to expensive frontier models because they cannot tell which prompts are simple enough for cheaper models. A router that scores prompt complexity and dispatches to the cheapest adequate model would cut API costs and latency.
Score 741 sourcesConfidence 70%
The problem
Developers overpay by sending every request to frontier models like Claude Sonnet, even when smaller models like Haiku could handle the task. They lack a reliable way to judge task complexity before choosing a model.
What could be built
A lightweight API or SDK that classifies incoming prompts by complexity and routes them to an appropriate model tier, with configurable thresholds and cost/latency reporting.
Who it's for
Indie developers shipping LLM-powered appsStartups managing LLM API costs
Who is talking（1）
Related topics
LLM routingprompt complexityAPI cost optimizationmodel selectionfrontier models
Summaries are AI-generated. The original words are in the threads above.