KlaatCode bets an open-source coding CLI on a hosted router, with tool calls billed at zero.

KlaatAI/klaatcode (created July 17, 351 stars, 138 forks, V2.3.4 on July 29) routes every message through Klaatu-o1, a small agentic router that classifies the request and dispatches to one of five cost tiers (nano → fast → code → reason → heavy, plus opt-in titan), escalating automatically when a task turns out harder than it looked. The commercial detail is the interesting one: reads, edits, shell commands, and searches inside a request are free, only user messages count against quota, which the maintainers state is the architectural reason the CLI can be Apache-2.0 while the routing brain stays hosted.