# Image Modeling on ImageNet 64x64 (val) Source: [Image Modeling on ImageNet 64x64 (val)]() Collection index: [llms.txt]() Data updated: 2026-02-26T05:53:17.672Z Evaluation of Image Modeling performance (density estimation or likelihood) on the validation split of the ImageNet dataset downsampled to 64x64 resolution, typically measured using Negative Log-Likelihood (NLL). 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 | Image Modeling | | Dataset (including any stated split) | ImageNet 64x64 (val) | | Metric | NLL (bits/dim) | | Unit | SCALAR | | Direction | Lower is better | | Results loaded | 11 of 11 | | 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)](): Lower is better; unit: SCALAR. ## Recorded results | Method | NLL (bits/dim) | Result date | Report paper | | --- | --- | --- | --- | | Perceiver AR | 3.4 | Not recorded | 68fa769c1e209131cea6e1b1 | | MD4 | 3.4 | Not recorded | 68fa769c1e209131cea6e1b1 | | Routing Transformer | 3.43 | Not recorded | 68fa769c1e209131cea6e1b1 | | Sparse Transformer | 3.44 | Not recorded | 68fa769c1e209131cea6e1b1 | | Gated PixelCNN | 3.57 | Not recorded | 68fa769c1e209131cea6e1b1 | | PixelRNN | 3.63 | Not recorded | 68fa62b81e209131ce9fad7e | | PixelRNN | 3.63 | Not recorded | 68fa769c1e209131cea6e1b1 | | RESIDUAL FLOW | 3.76 | Not recorded | 68fa67c71e209131cea18461 | | GLOW | 3.81 | Not recorded | 68fa67c71e209131cea18461 | | FFJORD RNODE | 3.83 | Not recorded | 68fa67c71e209131cea18461 | | REAL NVP | 3.98 | Not recorded | 68fa67c71e209131cea18461 | ### Perceiver AR NLL (bits/dim): 3.4. Result ID: 6994465a3a6c3148491c35c4. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"#Params":"770M"}. This record does not assert independent reproduction. ### MD4 NLL (bits/dim): 3.4. Result ID: 6994465a3a6c3148491c35c5. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"#Params":"198M"}. This record does not assert independent reproduction. ### Routing Transformer NLL (bits/dim): 3.43. Result ID: 6994465a3a6c3148491c35c3. [Reporting paper]() [Method origin paper]() [Implementation]() Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction. ### Sparse Transformer NLL (bits/dim): 3.44. Result ID: 6994465a3a6c3148491c35c2. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"#Params":"152M"}. This record does not assert independent reproduction. ### Gated PixelCNN NLL (bits/dim): 3.57. Result ID: 6994465a3a6c3148491c35c1. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction. ### PixelRNN NLL (bits/dim): 3.63. Result ID: 698be0b4ecace47ef5598b99. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"Resolution":"64x64","Data Augmentation":false}. This record does not assert independent reproduction. ### PixelRNN NLL (bits/dim): 3.63. Result ID: 6994465a3a6c3148491c35c0. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction. ### RESIDUAL FLOW NLL (bits/dim): 3.76. Result ID: 698d440e8b517eb4332038f4. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"Dequantization":"uniform"}. This record does not assert independent reproduction. ### GLOW NLL (bits/dim): 3.81. Result ID: 698d440e8b517eb4332038f3. [Reporting paper]() [Method origin paper]() [Implementation]() Recorded evaluation configuration: {"Dequantization":"uniform"}. This record does not assert independent reproduction. ### FFJORD RNODE NLL (bits/dim): 3.83. Result ID: 698d440e8b517eb4332038f1. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"Dequantization":"uniform","TIME":"64.1"}. This record does not assert independent reproduction. ### REAL NVP NLL (bits/dim): 3.98. Result ID: 698d440e8b517eb4332038f2. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"Dequantization":"uniform"}. This record does not assert independent reproduction. Page 1 of 1. This is an index page, not the full collection.