---
license: cc-by-nc-4.0
pipeline_tag: text-generation
tags:
- executorch
library_name: executorch
---

# hammer-2.1

This repository hosts the **hammer-2.1** models exported for the
[React Native ExecuTorch](https://www.npmjs.com/package/react-native-executorch)
library as ExecuTorch `.pte` programs, ready to run on device.

## Variants

| Path | Backend | Precision | Context length |
| --- | --- | --- | --- |
| `0_5b/mlx/hammer_2_1_0_5b_mlx_int4.pte` | mlx | int4 | 16,384 |
| `0_5b/xnnpack/hammer_2_1_0_5b_xnnpack_8da4w.pte` | xnnpack | 8da4w | 16,384 |
| `1_5b/mlx/hammer_2_1_1_5b_mlx_int4.pte` | mlx | int4 | 16,384 |
| `1_5b/xnnpack/hammer_2_1_1_5b_xnnpack_8da4w.pte` | xnnpack | 8da4w | 16,384 |
| `3b/mlx/hammer_2_1_3b_mlx_int4.pte` | mlx | int4 | 8,192 |
| `3b/xnnpack/hammer_2_1_3b_xnnpack_8da4w.pte` | xnnpack | 8da4w | 8,192 |



## Repository structure

```
0_5b/mlx/config.json                            1.3 KiB
0_5b/mlx/hammer_2_1_0_5b_mlx_int4.pte           510 MiB
0_5b/xnnpack/config.json                        1.3 KiB
0_5b/xnnpack/hammer_2_1_0_5b_xnnpack_8da4w.pte  412 MiB
1_5b/mlx/config.json                            1.3 KiB
1_5b/mlx/hammer_2_1_1_5b_mlx_int4.pte           1.2 GiB
1_5b/xnnpack/config.json                        1.3 KiB
1_5b/xnnpack/hammer_2_1_1_5b_xnnpack_8da4w.pte  1.1 GiB
3b/mlx/config.json                              1.3 KiB
3b/mlx/hammer_2_1_3b_mlx_int4.pte               2.1 GiB
3b/xnnpack/config.json                          1.3 KiB
3b/xnnpack/hammer_2_1_3b_xnnpack_8da4w.pte      1.9 GiB
config.json                                     32 B
tokenizer.json                                  10.9 MiB
tokenizer_config.json                           7.0 KiB
```

## Compatibility

These files are published for the **ExecuTorch v1.4.1** runtime. ExecuTorch
gives no forward compatibility guarantee, so an older runtime may fail to load
them.

To use them in React Native ExecuTorch, pass the model constant shipped in the
library's model registry to the corresponding task pipeline. See the
[documentation](https://docs.swmansion.com/react-native-executorch/docs/fundamentals/downloading-models).

To load these files in your own ExecuTorch runtime, read the
[compatibility note](https://github.com/pytorch/executorch/blob/main/runtime/COMPATIBILITY.md)
first.