Arc

Arc packs pretty much all you can ask for into 0.22 MB. For context, as of June 29th, Cline is 10.18 MB, Kilo Code 101.40 MB, Continue 111.48 MB. Tiered model registry, start a chat with a default model, and watch it start subagents using free models for simple tasks, or handoff the entire chat to a heavy model for difficult tasks. Multi-provider failover and weighted load balancing, configure multiple providers for the same model and automatically switch between them when one is down.