Preview limits

• Some Arena rows still exist without a stable Arena identity in that snapshot. NNZen keeps the row visible and surfaces the missing-ID reason instead of inventing one.
• Freshness can differ by source. The UI and API expose timestamps, health hints, and last-good snapshot metadata when one source lags behind another.
• The quick search uses the lightweight /api/v1/models/index contract. The full explorer still uses the richer /api/v1/models/all snapshot.

Pricing provenance

Prompt and completion prices can come from different upstream catalogs over time. Compact discovery rows therefore expose a price_source field instead of flattening all prices into a source-free number.

OpenRouter-backed rows currently keep their runtime pricing from the existing OpenRouter merge path. LiteLLM is still treated as an audited supplemental catalog until match coverage and integrity policy are finalized.

What to use right now

• Use the home page quick search for a shortlist.
• Use /compare when you want a shareable side-by-side decision view for up to four models.
• Use the full explorer when you need categories, details drawers, and rich diagnostic fields.
• Use /api when you want the simplest public API entrypoint and examples.