# Model zoo

**Source:** https://promtable.com/glossary/model-zoo

> A model zoo is the platform-hosted collection of pre-trained models you can browse, download, fine-tune, or serve — Hugging Face Hub (the dominant 2026 model zoo), Replicate, Civitai, ModelScope are leaders.

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A model zoo is the platform-hosted collection of pre-trained models you can browse, download, fine-tune, or serve — Hugging Face Hub (the dominant 2026 model zoo), Replicate, Civitai, ModelScope are leaders.

Model zoos solve the discoverability problem: with thousands of open-weight LLMs + image models + speech models, where do you find the right one? Hugging Face Hub dominates with 1M+ models, datasets, leaderboards, and one-line Python download. Replicate hosts inference-ready endpoints. Civitai specializes in Stable Diffusion checkpoints + LoRAs. ModelScope is Alibaba's Chinese-focused alternative. Engineering touchpoints: model cards (HF standardized format documenting use, limits, biases), versioning + revisions, gated access (some models require approval — Llama, some Mistral tiers), Spaces (HF's hosted demo environment). Production patterns: pin a specific revision (not main), audit the model card, mirror weights to your own CDN for production reliability.

## When to use

- Discovering open-weight models.
- Hosting your own fine-tunes for community.

## Common mistakes

- Loading `main` revision in prod — breaks if author force-pushes.
- Not auditing the model card — biases / limits get missed.

## Related terms

- [open-weight-model](https://promtable.com/glossary/open-weight-model)
- [model-card](https://promtable.com/glossary/model-card)

*Last updated: 2026-06-01*
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Original page: https://promtable.com/glossary/model-zoo
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