# Training SAM3 models failed **URL:** \ **Category:** šŸ¤ Community Help\ **Created:** [November 25, 2025, 9:20am UTC](https://discuss.roboflow.com/t/training-sam3-models-failed/11484 "2025-11-25T09:20:48Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![Milo](https://avatars.discourse-cdn.com/v4/letter/m/85e7bf/32.png) [@Milo](https://discuss.roboflow.com/u/Milo)\ **Post date:** [November 25, 2025, 9:20am UTC](https://discuss.roboflow.com/t/training-sam3-models-failed/11484/1 "2025-11-25T09:20:48Z")
_Does anybody already have (a good) experience with training the new SAM3 model?_ - **Project Type: Segmentation** - **Operating System & Browser: Firefox** - **Project Universe Link or Workspace/Project ID: -** Iā€™m getting the following error and Iā€™m wondering if someone else has the same experience or might even already have obtained results? Iā€™d love to see how it performs on my dataset. šŸ˜ƒ ![afbeelding](https://canada1.discourse-cdn.com/flex029/uploads/roboflow1/original/2X/f/f91c194b45c77310b1dbf8a6e1e0b5a99671384f.png) ---
**Author:** ![anto3563](https://yyz1.discourse-cdn.com/flex029/user_avatar/discuss.roboflow.com/anto3563/32/7274_2.png) [@anto3563](https://discuss.roboflow.com/u/anto3563)\ **Post date:** [December 8, 2025, 3:43am UTC](https://discuss.roboflow.com/t/training-sam3-models-failed/11484/3 "2025-12-08T03:43:57Z")
Hi, I also obtained the same error. Have you managed to find a solution/get help for this error? Best, Antoine ---
**Author:** ![Milo](https://avatars.discourse-cdn.com/v4/letter/m/85e7bf/32.png) [@Milo](https://discuss.roboflow.com/u/Milo)\ **Post date:** [December 8, 2025, 8:02am UTC](https://discuss.roboflow.com/t/training-sam3-models-failed/11484/4 "2025-12-08T08:02:29Z")
Hi Antoine, Unfortunately I did not. Still waiting. Did you report the bug as well? Best, MIlo ---
**Author:** ![anto3563](https://yyz1.discourse-cdn.com/flex029/user_avatar/discuss.roboflow.com/anto3563/32/7274_2.png) [@anto3563](https://discuss.roboflow.com/u/anto3563)\ **Post date:** [December 8, 2025, 4:08pm UTC](https://discuss.roboflow.com/t/training-sam3-models-failed/11484/5 "2025-12-08T16:08:38Z")
Hi Milo, Yes I also reported the error, but I havenā€™t heard back since. Itā€™s a little unfortunate, SAM3 seems very promising. Letā€™s hope that they will be able to solve this error soon. Antoine ---
**Author:** ![Sagar](https://yyz1.discourse-cdn.com/flex029/user_avatar/discuss.roboflow.com/sagar/32/6537_2.png) [@Sagar](https://discuss.roboflow.com/u/Sagar)\ **Post date:** [December 9, 2025, 5:08pm UTC](https://discuss.roboflow.com/t/training-sam3-models-failed/11484/6 "2025-12-09T17:08:36Z")
Is this the same on the Chrome browser as well? Additionally, in my case, I am receiving this error, and I believe it may be because Iā€™m using an uncommon class that is not included in the SAM 3 modelā€™s training data. ![Screenshot from 2025-12-09 11-55-33](https://canada1.discourse-cdn.com/flex029/uploads/roboflow1/original/2X/9/983bff50b36094ef2d2c785a4c661e8446315b3f.png) ---
**Author:** ![Milo](https://avatars.discourse-cdn.com/v4/letter/m/85e7bf/32.png) [@Milo](https://discuss.roboflow.com/u/Milo)\ **Post date:** [December 10, 2025, 8:24am UTC](https://discuss.roboflow.com/t/training-sam3-models-failed/11484/7 "2025-12-10T08:24:35Z")
Iā€™m working in FireFox, donā€™t think this is a browser issue. But where are you getting your error @Sagar ? Is this while annotating, training or the new rapid flow? ---
**Author:** ![Sagar](https://yyz1.discourse-cdn.com/flex029/user_avatar/discuss.roboflow.com/sagar/32/6537_2.png) [@Sagar](https://discuss.roboflow.com/u/Sagar)\ **Post date:** [December 10, 2025, 8:36am UTC](https://discuss.roboflow.com/t/training-sam3-models-failed/11484/8 "2025-12-10T08:36:38Z")
@Milo I am getting error while annotating. ---
**Author:** ![Milo](https://avatars.discourse-cdn.com/v4/letter/m/85e7bf/32.png) [@Milo](https://discuss.roboflow.com/u/Milo)\ **Post date:** [December 10, 2025, 10:23am UTC](https://discuss.roboflow.com/t/training-sam3-models-failed/11484/9 "2025-12-10T10:23:03Z")
Oke, for me this is new. I have used this feature a couple times and it hasnā€™t failed yet! ---
**Author:** ![Patrick\_Nihranz](https://yyz1.discourse-cdn.com/flex029/user_avatar/discuss.roboflow.com/patrick_nihranz/32/8829_2.png) [@Patrick\_Nihranz](https://discuss.roboflow.com/u/Patrick_Nihranz)\ **Post date:** [December 11, 2025, 7:19pm UTC](https://discuss.roboflow.com/t/training-sam3-models-failed/11484/10 "2025-12-11T19:19:52Z")
Hi Milo! Thanks for bringing this issue forward. Our team is working to optimize the SAM3 model training pipeline. For now, I would suggest training SAM3 on 3,000 or less images. ---
**Author:** ![Milo](https://avatars.discourse-cdn.com/v4/letter/m/85e7bf/32.png) [@Milo](https://discuss.roboflow.com/u/Milo)\ **Post date:** [December 12, 2025, 8:26am UTC](https://discuss.roboflow.com/t/training-sam3-models-failed/11484/11 "2025-12-12T08:26:29Z")
Excellent, I trained on WAY less than that! šŸ˜ƒ I started with 50 images or so just to get a feel for it. Are you suggesting that SAM3 is working now? Thanks! ---
**Author:** ![Patrick\_Nihranz](https://yyz1.discourse-cdn.com/flex029/user_avatar/discuss.roboflow.com/patrick_nihranz/32/8829_2.png) [@Patrick\_Nihranz](https://discuss.roboflow.com/u/Patrick_Nihranz)\ **Post date:** [December 12, 2025, 3:24pm UTC](https://discuss.roboflow.com/t/training-sam3-models-failed/11484/12 "2025-12-12T15:24:48Z")
Hey Milo! I was playing around a bit with the SAM3 model myself and was able to train on a dataset of a bit under 500 images (segmenting different types of automobiles). Definitely be prepared for a longer training time as this is a very intensive model. ![Screenshot 2025-12-12 at 10.22.31 AM](https://canada1.discourse-cdn.com/flex029/uploads/roboflow1/original/2X/2/216f21df2794a083fccfff3071866d3781c3db66.png) ---
**Author:** ![system](https://canada1.discourse-cdn.com/flex029/uploads/roboflow1/original/1X/bb6edbfa56d0cf2ee603f061e9e09103502cc8cc.png) [@system](https://discuss.roboflow.com/u/system)\ **Post date:** [December 19, 2025, 3:25pm UTC](https://discuss.roboflow.com/t/training-sam3-models-failed/11484/13 "2025-12-19T15:25:18Z")
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