model-routing skillA
model-routing is agent-read markdown (skill) from aquegen/model-routing: Route work to the cheapest model tier that holds quality. Use when deciding which model or agent should handle a task, when the user asks about token economy / cost optimization, or when dispatching implementation, review, or test-run work to subagents..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
# Model Routing The expensive model thinks, cheaper models grind. The main-session model cannot be switched by Claude - routing works through subagent delegation (the `model` param of the Agent tool, or the agents bundled with this plugin). **Routing makes a dispatch cheaper; it does not make dispatching cheap.** A subagent starts empty, so everything it reads is a cache write, while the main session pays cache read - 12.5x less, 25x on Opus 5.5, 50x on Fable 5.1 and Mythos 5.1 - for context it already holds. That penalty is paid whether or not the tier is routed down, so the rules below only pay off on work that was going to be delegated anyway. On one wide-reading session, three runs: doing it inline cost $1.36 and delegating with the tier routed down $1.68, both measured; delegating at the session tier comes to $2.01, which is those same measured subagent tokens repriced at the higher tier rather than a run of its own. Route every dispatch - roughly a sixth off work already leaving the session - and do not manufacture dispatches to collect it. ## Tiers Think in tiers, not model names - names rot, tiers do not: …
Read the whole file at its exact version.
How to install
mdr add aquegen/model-routing/model-routing@git:20260922.f074b54mdr add aquegen/model-routing/model-routing@sha256:58139106c6de4f32Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_mqdud4knrsh7lrox)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260922.f074b54 latest | 2026-09-22 | f074b54 | 29,814 B | A | view · diff |
| git:20260917.14b38b9 | 2026-09-17 | 14b38b9 | 29,357 B | A | view · diff |
| git:20260910.f4ca263 | 2026-09-10 | f4ca263 | 27,778 B | A | view · diff |
| git:20260910.66fafa0 | 2026-09-10 | 66fafa0 | 27,499 B | A | view · diff |
| git:20260910.529e281 | 2026-09-10 | 529e281 | 27,544 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (29814 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
aquegen/model-routing · 3 stars · license MIT · pushed 2026-09-22 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_mqdud4knrsh7lrox GET https://markdownregistry.com/api/v1/resolve?ref=aquegen/model-routing/model-routing GET https://markdownregistry.com/api/v1/blob/58139106c6de4f329eef1a9edb0983ec7b1a777d77ec095afe296367c834641d
Your agent does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.