A harness plugin that autoswitches to the appropriate model to save u tokens

I keep forgetting to switch models. I don't need Opus 5.5 to write docs; Sonnet is good enough.

autoswitch is a Claude Code mod that picks the model for each prompt, so you don't have to /model by hand.

Requires Claude Code 2.1.299+ and a claude.ai or Anthropic API login (not Bedrock/Vertex/Foundry).

/plugin install autoswitch --marketplace ilyesarf/autoswitch

On older versions:

/plugin marketplace add ilyesarf/autoswitch
/plugin install autoswitch@autoswitch

Or run it from a local clone: claude --plugin-dir /path/to/autoswitch

Just prompt as usual. A toast shows when it switches.

• !<model> prompt forces a model:!opus ,!sonnet-5 ,!haiku-5-5
• /autoswitch shows the model ladder,/autoswitch refresh rebuilds it
• /config hascompact_threshold (default 100k tokens) andmax_model_age_days (default 180)

1. Discover : lists your usable models (two newest per family, released in the last 180 days) and ranks them haiku < sonnet < opus < fable, then by version.
2. Rate : a cheap model scores each prompt 1-10, and the score picks a rung on the ladder.
3. Switch : before a switch, compacts the conversation if it's large. A model that fails is dropped and the turn retries one rung down. Models that need paid credits are skipped while your credits are off.