- withoutBG Open Weights
- Open weights · commercially permissiveLicense: Apache-2.0
- withoutBG Pro Model Self-Host
- ProprietaryLicense: Commercial self-host license
withoutBG Open Weights vs Pro Model Self-Host
Quantitative comparison: 60 images scored against ground-truth mattes. Lower is better. Use the view controls on each row to switch between transparency, chroma key, and alpha matte on all outputs.
| Metric | withoutBG Open-Weight Model | Pro Model Self-Host |
|---|---|---|
| MGE (Edge Quality) | 0.04523 | 0.03692 ✓ |
| MAE (Overall Accuracy) | 0.02923 | 0.02759 ✓ |
Disclosure: withoutBG includes BiRefNet
withoutBG Open Weights and Pro Model API are routed pipelines. A classifier sends fine strands, soft detail and transparency to withoutBG's own matting model, and hard opaque objects, flat scenes and vehicles to BiRefNet (MIT license), which is part of the pipeline. On this page, 17 of 58 images went to BiRefNet. The table splits the scores by route: the first group is what withoutBG's own matting model handled.
| Images | Metric | withoutBG Open-Weight Model | Pro Model Self-Host |
|---|---|---|---|
| Routed to withoutBG matting (41) | MAE | 0.01846 | 0.01659 ✓ |
| MGE (edges) | 0.03773 | 0.02821 ✓ | |
| Routed to BiRefNet (17) | MAE | 0.01509 | 0.01421 ✓ |
| MGE (edges) | 0.04305 | 0.03760 ✓ |
Per-image averages, lower is better.
- MGE
- 0.03254
- MAE
- 0.00960
- MGE
- 0.02588✓
- MAE
- 0.00859✓
- MGE
- 0.06122
- MAE
- 0.02110
- MGE
- 0.04788✓
- MAE
- 0.02000✓
Photo by Alexander Dummer on Unsplash
- MGE
- 0.02084
- MAE
- 0.00601✓
- MGE
- 0.02005✓
- MAE
- 0.00767
- MGE
- 0.01262
- MAE
- 0.00461
- MGE
- 0.00929✓
- MAE
- 0.00370✓
- MGE
- 0.17462
- MAE
- 0.19712✓
- MGE
- 0.17212✓
- MAE
- 0.19787
Photo by Andreas Rasmussen on Unsplash
- MGE
- 0.07595
- MAE
- 0.02381
- MGE
- 0.04235✓
- MAE
- 0.00729✓
- MGE
- 0.03402
- MAE
- 0.02906
- MGE
- 0.03079✓
- MAE
- 0.02759✓
- MGE
- 0.04621
- MAE
- 0.01031
- MGE
- 0.04103✓
- MAE
- 0.00914✓
- MGE
- 0.01697
- MAE
- 0.00407
- MGE
- 0.00787✓
- MAE
- 0.00233✓
- MGE
- 0.01899✓
- MAE
- 0.00660✓
- MGE
- 0.02477
- MAE
- 0.00826
- MGE
- 0.04118
- MAE
- 0.01690
- MGE
- 0.02389✓
- MAE
- 0.01407✓
- MGE
- 0.04200
- MAE
- 0.01715✓
- MGE
- 0.03683✓
- MAE
- 0.02790
- MGE
- 0.05736
- MAE
- 0.08254✓
- MGE
- 0.05730✓
- MAE
- 0.09005
Photo by Camila Quintero Franco on Unsplash
- MGE
- 0.01469
- MAE
- 0.00695
- MGE
- 0.01250✓
- MAE
- 0.00669✓
- MGE
- 0.06638✓
- MAE
- 0.01242✓
- MGE
- 0.07267
- MAE
- 0.01349
- MGE
- 0.01093✓
- MAE
- 0.00177✓
- MGE
- 0.01582
- MAE
- 0.00245
Photo by Carlo Sierra on Unsplash
- MGE
- 0.02498
- MAE
- 0.00460
- MGE
- 0.01961✓
- MAE
- 0.00347✓
- MGE
- 0.03139
- MAE
- 0.00959
- MGE
- 0.02067✓
- MAE
- 0.00736✓
- MGE
- 0.02976
- MAE
- 0.00740
- MGE
- 0.02134✓
- MAE
- 0.00599✓
Photo by Conor Samuel on Unsplash
- MGE
- 0.07155
- MAE
- 0.01159
- MGE
- 0.02556✓
- MAE
- 0.00413✓
- MGE
- 0.03577
- MAE
- 0.00660
- MGE
- 0.01451✓
- MAE
- 0.00288✓
- MGE
- 0.01789
- MAE
- 0.00452
- MGE
- 0.01127✓
- MAE
- 0.00337✓
- MGE
- 0.03015
- MAE
- 0.01049
- MGE
- 0.02593✓
- MAE
- 0.00883✓
- MGE
- 0.05026✓
- MAE
- 0.01100✓
- MGE
- 0.05422
- MAE
- 0.01279
- MGE
- 0.01489
- MAE
- 0.00434
- MGE
- 0.01000✓
- MAE
- 0.00365✓
- MGE
- 0.01399✓
- MAE
- 0.00246✓
- MGE
- 0.01873
- MAE
- 0.00318
Photo by Lars Bo Nielsen on Unsplash
- MGE
- 0.05191
- MAE
- 0.01377✓
- MGE
- 0.04082✓
- MAE
- 0.01465
Photo by Mayer Tawfik on Unsplash
- MGE
- 0.01835
- MAE
- 0.00586
- MGE
- 0.00720✓
- MAE
- 0.00366✓
- MGE
- 0.01551
- MAE
- 0.00578
- MGE
- 0.00829✓
- MAE
- 0.00407✓
- MGE
- 0.02743
- MAE
- 0.00856
- MGE
- 0.02488✓
- MAE
- 0.00741✓
Photo by Niko Tsviliov on Unsplash
- MGE
- 0.14105
- MAE
- 0.05132
- MGE
- 0.08980✓
- MAE
- 0.04218✓
Photo by Norbert Braun on Unsplash
- MGE
- 0.01083
- MAE
- 0.00164
- MGE
- 0.00162✓
- MAE
- 0.00030✓
- MGE
- 0.05432✓
- MAE
- 0.02385
- MGE
- 0.05502
- MAE
- 0.02375✓
- MGE
- 0.03119
- MAE
- 0.02758
- MGE
- 0.02383✓
- MAE
- 0.02265✓
- MGE
- 0.02442
- MAE
- 0.01933
- MGE
- 0.02014✓
- MAE
- 0.01811✓
- MGE
- 0.02832
- MAE
- 0.01777
- MGE
- 0.02213✓
- MAE
- 0.00621✓
- MGE
- 0.37410
- MAE
- 0.49629
- MGE
- 0.36774✓
- MAE
- 0.49473✓
- MGE
- 0.02225
- MAE
- 0.00549
- MGE
- 0.02146✓
- MAE
- 0.00546✓
- MGE
- 0.01052
- MAE
- 0.00205
- MGE
- 0.00508✓
- MAE
- 0.00117✓
- MGE
- 0.02272
- MAE
- 0.00521
- MGE
- 0.00974✓
- MAE
- 0.00278✓
- MGE
- 0.03536✓
- MAE
- 0.00578✓
- MGE
- 0.04221
- MAE
- 0.00769
- MGE
- 0.02418
- MAE
- 0.02733
- MGE
- 0.02093✓
- MAE
- 0.02595✓
- MGE
- 0.02203
- MAE
- 0.00368
- MGE
- 0.01223✓
- MAE
- 0.00217✓
- MGE
- 0.01403
- MAE
- 0.00312
- MGE
- 0.00706✓
- MAE
- 0.00208✓
- MGE
- 0.02054
- MAE
- 0.00590
- MGE
- 0.01306✓
- MAE
- 0.00461✓
- MGE
- 0.00960✓
- MAE
- 0.00134✓
- MGE
- 0.01927
- MAE
- 0.00259
- MGE
- 0.02730
- MAE
- 0.00734
- MGE
- 0.02230✓
- MAE
- 0.00585✓
- MGE
- 0.02940
- MAE
- 0.01110
- MGE
- 0.01365✓
- MAE
- 0.00765✓
- MGE
- 0.18102
- MAE
- 0.03429
- MGE
- 0.13057✓
- MAE
- 0.02597✓
- MGE
- 0.07739
- MAE
- 0.09324
- MGE
- 0.07300✓
- MAE
- 0.09074✓
- MGE
- 0.13603
- MAE
- 0.02861
- MGE
- 0.12568✓
- MAE
- 0.02596✓
- MGE
- 0.02226✓
- MAE
- 0.00320✓
- MGE
- 0.02966
- MAE
- 0.00408
- MGE
- 0.03189
- MAE
- 0.00686
- MGE
- 0.00371✓
- MAE
- 0.00136✓
- MGE
- 0.01003
- MAE
- 0.01228
- MGE
- 0.00719✓
- MAE
- 0.01014✓
Photo by Vinicius Wiesehofer on Unsplash
- MGE
- 0.02822
- MAE
- 0.01994✓
- MGE
- 0.02527✓
- MAE
- 0.02075
- MGE
- 0.06085
- MAE
- 0.24387
- MGE
- 0.05182✓
- MAE
- 0.23861✓
- MGE
- 0.02557
- MAE
- 0.01326
- MGE
- 0.01746✓
- MAE
- 0.00935✓
- MGE
- 0.02353
- MAE
- 0.00573
- MGE
- 0.00738✓
- MAE
- 0.00313✓
- MGE
- 0.03757
- MAE
- 0.01221
- MGE
- 0.01874✓
- MAE
- 0.00986✓
- MGE
- 0.01677
- MAE
- 0.00759
- MGE
- 0.01355✓
- MAE
- 0.00682✓
Methodology
- Alpha mattes are grayscale masks encoding per-pixel foreground probability. They capture fine edge detail (hair, fur, semi-transparent regions) that binary masks discard.
- Metrics are computed by comparing predicted mattes against a ground-truth reference: MGE measures edge sharpness and MAE measures pixel-level accuracy. Both are lower-is-better.
- Scored images come from Bench v0, where every image has a ground-truth matte. The benchmark page has the full methodology and per-image scores for every model (CSV / JSON).
Photo Credits
Source images are courtesy of the photographers below via Unsplash.