Limits and quotas
There are two tiers of keys for the Custom Vision service. You can sign up for a F0 (free) or S0 (standard) subscription through the Azure portal. See the corresponding Cognitive Services Pricing page for details on pricing and transactions.
The number of training images per project and tags per project are expected to increase over time for S0 projects.
|Factor||F0 (free)||S0 (standard)|
|Training images per project||5,000||100,000|
|Predictions / month||10,000||Unlimited|
|Tags / project||50||500|
|Min labeled images per Tag, Classification (50+ recommended)||5||5|
|Min labeled images per Tag, Object Detection (50+ recommended)||15||15|
|How long prediction images stored||30 days||30 days|
|Prediction operations with storage (Transactions Per Second)||2||10|
|Prediction operations without storage (Transactions Per Second)||2||20|
|TrainProject (API calls Per Second)||2||10|
|Other API calls (Transactions Per Second)||10||10|
|Accepted image types||jpg, png, bmp, gif||jpg, png, bmp, gif|
|Min image height/width in pixels||256 (see note)||256 (see note)|
|Max image height/width in pixels||10,240||10,240|
|Max image size (training image upload)||6 MB||6 MB|
|Max image size (prediction)||4 MB||4 MB|
|Max number of regions per image (object detection)||300||300|
|Max number of tags per image (classification)||100||100|
Images smaller than than 256 pixels will be accepted but upscaled. Image aspect ratio should not be larger than 25:1.