# Density Estimation on CelebAHQ 256 x 256 5-bits

Source: [Density Estimation on CelebAHQ 256 x 256 5-bits](<https://www.sota2.com/research/sota/density-estimation-on-celebahq-256-x-256-5-bits>)

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

Data updated: 2026-02-26T05:53:17.537Z

Evaluation of Density Estimation performance on the CelebAHQ dataset using the 256x256 resolution with 5-bit quantization, measured using NLL (bits/dim).

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 | Density Estimation |
| Dataset (including any stated split) | CelebAHQ 256 x 256 5-bits |
| Metric | NLL (bits/dim) |
| Unit | SCALAR |
| Direction | Lower is better |
| Results loaded | 8 of 8 |
| 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

- [NLL (bits/dim)](<https://www.sota2.com/research/sota/density-estimation-on-celebahq-256-x-256-5-bits.md?metric=NLL%20(bits%2Fdim)>): Lower is better; unit: SCALAR.

## Recorded results

| Method | NLL (bits/dim) | Result date | Report paper |
| --- | --- | --- | --- |
| Efficient-VDVAE | 0.51 | Not recorded | 68fa6c6a1e209131cea33fb1 |
| Efficient-VDVAE | 0.57 | Not recorded | 68fa6c6a1e209131cea33fb1 |
| SPN | 0.61 | Not recorded | 68fa6c6a1e209131cea33fb1 |
| MaCow | 0.67 | Not recorded | 68fa6c6a1e209131cea33fb1 |
| NVAE | 0.7 | Not recorded | 68fa6c6a1e209131cea33fb1 |
| ANF | 0.72 | Not recorded | 68fa6c6a1e209131cea33fb1 |
| Locally Masked PixelCNN | 0.74 | Not recorded | 68fa6c6a1e209131cea33fb1 |
| GLOW | 1.03 | Not recorded | 68fa6c6a1e209131cea33fb1 |

### Efficient-VDVAE

NLL (bits/dim): 0.51. Result ID: 698f13533a6c314849f5841b.

[Reporting paper](<https://www.sota2.com/research/paper/68fa6c6a1e209131cea33fb1.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa6c6a1e209131cea33fb1.md>)

[Implementation](<https://github.com/Rayhane-mamah/Efficient-VDVAE>)

Recorded evaluation configuration: {"configuration":"section 6"}. This record does not assert independent reproduction.

### Efficient-VDVAE

NLL (bits/dim): 0.57. Result ID: 698f13533a6c314849f5841a.

[Reporting paper](<https://www.sota2.com/research/paper/68fa6c6a1e209131cea33fb1.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa6c6a1e209131cea33fb1.md>)

[Implementation](<https://github.com/Rayhane-mamah/Efficient-VDVAE>)

Recorded evaluation configuration: {"configuration":"standard"}. This record does not assert independent reproduction.

### SPN

NLL (bits/dim): 0.61. Result ID: 698f13533a6c314849f58416.

[Reporting paper](<https://www.sota2.com/research/paper/68fa6c6a1e209131cea33fb1.md>)

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

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

### MaCow

NLL (bits/dim): 0.67. Result ID: 698f13533a6c314849f58417.

[Reporting paper](<https://www.sota2.com/research/paper/68fa6c6a1e209131cea33fb1.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa66901e209131cea10dd9.md>)

[Implementation](<https://github.com/XuezheMax/macow>)

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

### NVAE

NLL (bits/dim): 0.7. Result ID: 698f13533a6c314849f58419.

[Reporting paper](<https://www.sota2.com/research/paper/68fa6c6a1e209131cea33fb1.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa690b1e209131cea1faf3.md>)

[Implementation](<https://github.com/NVlabs/NVAE>)

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

### ANF

NLL (bits/dim): 0.72. Result ID: 698f13533a6c314849f58414.

[Reporting paper](<https://www.sota2.com/research/paper/68fa6c6a1e209131cea33fb1.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa671b1e209131cea14415.md>)

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

### Locally Masked PixelCNN

NLL (bits/dim): 0.74. Result ID: 698f13533a6c314849f58418.

[Reporting paper](<https://www.sota2.com/research/paper/68fa6c6a1e209131cea33fb1.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa67d41e209131cea18bde.md>)

[Implementation](<https://ajayjain.github.io/lmconv>)

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

### GLOW

NLL (bits/dim): 1.03. Result ID: 698f13533a6c314849f58415.

[Reporting paper](<https://www.sota2.com/research/paper/68fa6c6a1e209131cea33fb1.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa649e1e209131cea05a05.md>)

[Implementation](<https://github.com/openai/glow>)

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

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