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. This page outlines the limitations of each tier. See the Azure AI services pricing page for more details on pricing and transactions.
| Factor | F0 (free) | S0 (standard) |
|---|---|---|
| Projects | 2 | 100 |
| Training images per project | 5,000 | 100,000 |
| Predictions / month | 10,000 | Unlimited |
| Tags / project | 50 | 500 |
| Iterations | 20 | 20 |
| 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 |
Note
Images smaller than 256 pixels will be accepted but upscaled.
Note
The image aspect ratio should not be larger than 25:1.