Custom Model Planning vs ModelSpec
Custom Model Planning is a plugin bundle for AI coding tools published by danielrosehill. Marketplaces we read that list it: 1 (Community GitHub marketplaces). ModelSpec is an MCP server published by turbobeest. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-20. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |  Custom Model Planning |  ModelSpec |
|---|---|---|
| Community marketplace danielrosehill/claude-code-plugins | Listed Version: 1.2.0 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: b8da9336f3c5a0b56d47987251a29006a5b0487b Forks (GitHub): 0 Stars (GitHub): 2 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | Custom Model Planning | ModelSpec |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 0 (worse) | 2 (better) |
| Forks (GitHub) | 0 | 0 |
| Last release (differs) | 2026-10-20 | Not published |
| Where it runs (differs) | Installs as a plugin bundle | Remote server (api.modelspec.dev/mcp) |
| Transport (differs) | Not stated | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Parts of the bundle (differs) | 13 | Not a bundle |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/danielrosehill/claude-custom-model-planning-plugin | github.com/turbobeest/modelspec |
| Changes in the last 7 days (differs) | 4 | 2 |
| First seen | 2026-10-15 | 2026-10-15 |
| Endpoint at the last check (differs) | no remote endpoint we check | Responded 6 h ago |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
Custom Model Planning
Plan small custom models and fine-tunes: check the Hub, research options, write the spec in a planning repo.
ModelSpec
Find AI models that fit a job from your requirements, sourced benchmarks and real cost.
How to run each
Custom Model Planning As a Claude Code plugin
/plugin marketplace add danielrosehill/claude-code-plugins
/plugin install custom-model-planning@danielrosehillModelSpec As a remote MCP server
claude mcp add --transport http modelspec https://api.modelspec.dev/mcp --header "Authorization: Bearer <YOUR_API_KEY>"Requires: Authorization header
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Only ModelSpec has a remote endpoint we check. How we check endpoints
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: Custom Model Planning · What it can do: ModelSpec · Compare two other plugins
Data comes from public marketplace files in GitHub repositories of their authors. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.