OpenRouter Model Family Taxonomy

Preview of how /models permaslugs would group into major-version family groups (e.g. openai/gpt-5, openai/gpt-5-mini, anthropic/claude-4-opus). Minor versions, patch versions, dates, and parameter sizes are stripped; product variants (mini, nano, chat, codex, coder, vl, …) are kept. Grouped by provider, sorted by total model count.

Most fragmented families

These are the biggest buckets — good sanity check that collapse rules aren't over-merging distinct products.

Skipped by extractFamilySlug

These permaslugs are filtered out before family resolution — OpenRouter meta routers, embeddings, and ~latest aliases.