# Fine-tuned models

> GNO ships gno-expansion-slim-retrieval-v1 as the expand role in slim-tuned (nDCG@10 0.925, Ask Recall@5 0.875). It does not train on your corpus.

Section: Reference  
Canonical: https://gno.sh/docs/fine-tuned-models  
Markdown: https://gno.sh/docs/fine-tuned-models.md

GNO publishes `gno-expansion-slim-retrieval-v1`, a fine-tuned model that expands search queries before retrieval.

## What this is

The expansion model rewrites or augments difficult queries before retrieval. It is the local `expand` GGUF in `slim-tuned`. Embeddings and standalone answers use other roles.

## The numbers

- **nDCG\@10 0.925** on the canonical benchmark corpus
- **Ask Recall\@5 0.875** on the ask-style answer benchmark
- Shipped via Hugging Face, pulled on first run

## Install it

```
gno models use slim-tuned
gno models pull --expand
```

## Your documents are not used for training

You select or download the shipped model. GNO never trains on your indexed documents.

## Benchmarks

To measure retrieval quality on your own documents, run `gno bench` against a fixture file of queries and expected results. See the [benchmarks feature page](https://gno.sh/features/benchmarks) for the fixture workflow and result metrics.

```
gno bench docs/examples/bench-fixture.json
gno bench fixture.json --json
```