My LLM router routed by prompt length — a 12-word request broke a production agent loop
This story is from 2026-10-12. It is preserved in the archive; the latest stories are on the live feed.
When I built my own OpenAI-compatible chat gateway, I needed routing tiers: cheap models for trivial calls, premium ones for real reasoning. The first heuristic was embarrassingly simple — total prompt length. Under ~500 characters, go eco tier; above, go premium. It passed every test I wrote. Then…
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- 2026-10-12 00:02 · DEV Community — AI
My LLM router routed by prompt length — a 12-word request broke a production agent loop