# Unconditional Image Generation on ImageNet 128 (test)

Source: [Unconditional Image Generation on ImageNet 128 (test)](<https://www.sota2.com/research/sota/unconditional-image-generation-on-imagenet-128-test>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2026-02-26T05:37:24.659Z

Evaluation of unconditional image generation models on the test split of the ImageNet dataset rendered at 128x128 resolution, typically measured using BPD (Bits Per Dimension).

A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage.

| Scope | Recorded value |
| --- | --- |
| Task | Unconditional Image Generation |
| Dataset (including any stated split) | ImageNet 128 (test) |
| Metric | BPD |
| Unit | SCALAR |
| Direction | Lower is better |
| Results loaded | 3 of 3 |
| Coverage | All results currently returned for this benchmark |

Evaluation settings may differ between results. The original papers and recorded configurations are needed to establish comparability. A shared metric name alone does not establish an identical protocol.

## Metrics

- [BPD](<https://www.sota2.com/research/sota/unconditional-image-generation-on-imagenet-128-test.md?metric=BPD>): Lower is better; unit: SCALAR.

## Recorded results

| Method | BPD | Result date | Report paper |
| --- | --- | --- | --- |
| SPN | 3.08 | Not recorded | 68fa6aec1e209131cea2b10c |
| 4-resolution MRCNF | 3.31 | Not recorded | 68fa6aec1e209131cea2b10c |
| Parallel Multiscale | 3.55 | Not recorded | 68fa6aec1e209131cea2b10c |

### SPN

BPD: 3.08. Result ID: 698e4161ffc3901de09c1041.

[Reporting paper](<https://www.sota2.com/research/paper/68fa6aec1e209131cea2b10c.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa651c1e209131cea086a4.md>)

Recorded evaluation configuration: {"PARAM":"250M"}. This record does not assert independent reproduction.

### 4-resolution MRCNF

BPD: 3.31. Result ID: 698e4161ffc3901de09c1042.

[Reporting paper](<https://www.sota2.com/research/paper/68fa6aec1e209131cea2b10c.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa6aec1e209131cea2b10c.md>)

[Implementation](<https://github.com/cfinlay/ffjord-rnode>)

Recorded evaluation configuration: {"PARAM":"2.74M","TIME":"58.59"}. This record does not assert independent reproduction.

### Parallel Multiscale

BPD: 3.55. Result ID: 698e4161ffc3901de09c1040.

[Reporting paper](<https://www.sota2.com/research/paper/68fa6aec1e209131cea2b10c.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa632f1e209131ce9fd244.md>)

Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction.

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