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Copy file name to clipboardExpand all lines: articles/ai-services/document-intelligence/concept-custom-neural.md
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You can choose to spend all of 10 free hours on a single model build with a large set of data, or utilize it across multiple builds by adjusting the maximum duration value for the `build` operation by specifying `maxTrainingHours`:
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```bash
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POST https://{endpoint}/documentintelligence/documentModels:build?api-version=2024-07-31-preview
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POST /documentModels:build
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{
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"modelId": "string",
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"description": "string",
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"buildMode": "neural",
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...,
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"maxTrainingHours": 10
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}
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> * If you would like to train additional neural models or train models for a longer time period that **exceed 10 hours**, billing charges apply. For details on the billing charges, refer to the [pricing page](https://azure.microsoft.com/pricing/details/ai-document-intelligence/).
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> * You can opt in for this paid training service by setting the `maxTrainingHours` to the desired maximum number of hours. API calls with no budget but with the `maxTrainingHours` set as over 10 hours will fail.
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> * As each build takes different amount of time depending on the type and size of the training dataset, billing is calculated for the actual time spent training the neural model, with a minimum of 30 minutes per training job.
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> * This paid billing structure enables you to train larger data sets for longer durations with flexibility in the training hours.
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> * This paid training feature enables you to train larger data sets for longer durations with flexibility in the training hours.
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```bash
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## Billing
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For Document Intelligence versions `v3.1 (2023-07-31) and v3.0 (2022-08-31)`, you receive a maximum 30 minutes of training duration per model, and a maximum of 20 trainings for free per month. If you would like to train more than 20 model instances, you can create an [Azure support ticket](service-limits.md#create-and-submit-support-request) to increase in the training limit. For the Azure support ticket, enter in the `summary` section a phrase such as `Increase Document Intelligence custom neural training (TPS) limit`. A ticket can only apply at a resource-level, not a subscription level. You can request a training limit increase for a single Document Intelligence resource by specifying your resource ID and region in the support ticket.
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For Document Intelligence versions `v3.1 (2023-07-31) and v3.0 (2022-08-31)`, you receive a maximum 30 minutes of training duration per model, and a maximum of 20 trainings for free per month. If you would like to train more than 20 model instances, you can create an [Azure support ticket](service-limits.md#create-and-submit-support-request) to increase in the training limit. For Azure support ticket, enter in the `summary` field: `Increase Document Intelligence custom neural training (TPS) limit`.
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> [!IMPORTANT]
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> * When increasing the training limit, note that 2 custom neural model training sessions will be considered as 1 training hour. For more details on the pricing for increasing the number of training sessions, refer to the [pricing page](https://azure.microsoft.com/pricing/details/ai-document-intelligence/).
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> * Azure support ticket for training limit increase can only apply at a **resource-level**, not a subscription level. You can request a training limit increase for a single Document Intelligence resource by specifying your resource ID and region in the support ticket.
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If you want to train models for longer durations than 30 minutes, we support **paid training** with our newest version, `v4.0 (2024-07-31-preview)`. Using the latest version, you can train your model for a longer duration to process larger documents. For more information about paid training, *see* [Billing v4.0](service-limits.md#billing).
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## Billing
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For Document Intelligence versions `v3.1 (2023-07-31) and v3.0 (2022-08-31)`, you receive a maximum 30 minutes of training duration per model, and a maximum of 20 trainings for free per month. If you would like to train more than 20 model instances, you can create an [Azure support ticket](service-limits.md#create-and-submit-support-request) to increase in the training limit. For the Azure support ticket, enter in the `summary` section a phrase such as `Increase Document Intelligence custom neural training (TPS) limit`. A ticket can only apply at a resource-level, not a subscription level. You can request a training limit increase for a single Document Intelligence resource by specifying your resource ID and region in the support ticket.
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For Document Intelligence versions `v3.1 (2023-07-31) and v3.0 (2022-08-31)`, you receive a maximum 30 minutes of training duration per model, and a maximum of 20 trainings for free per month. If you would like to train more than 20 model instances, you can create an [Azure support ticket](service-limits.md#create-and-submit-support-request) to increase in the training limit. For Azure support ticket, enter in the `summary` field: `Increase Document Intelligence custom neural training (TPS) limit`.
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> [!IMPORTANT]
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> * When increasing the training limit, note that 2 custom neural model training sessions will be considered as 1 training hour. For more details on the pricing for increasing the number of training sessions, refer to the [pricing page](https://azure.microsoft.com/pricing/details/ai-document-intelligence/).
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> * Azure support ticket for training limit increase can only apply at a **resource-level**, not a subscription level. You can request a training limit increase for a single Document Intelligence resource by specifying your resource ID and region in the support ticket.
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If you want to train models for longer durations than 30 minutes, we support **paid training** with our newest version, `v4.0 (2024-07-31)`. Using the latest version, you can train your model for a longer duration to process larger documents. For more information about paid training, *see* [Billing v4.0](service-limits.md#billing).
Copy file name to clipboardExpand all lines: articles/ai-services/document-intelligence/faq.yml
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Am I charged when training a custom models?
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answer: |
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**Yes**
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**Yes.**
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Although training is free for all custom generative and custom template models, creating the training dataset for all models requires running the Layout model on the training documents. Customers are responsible for this cost.
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Training is free for all custom generative and custom template models. However, creating the training dataset for all models requires running the Layout model on the training documents. Customers are responsible for this cost.
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Custom generative models also rely on the auto label feature to speed up the generation of the labeled dataset. There's a cost associated with this action. While the build operation for template and generative models is free, creating the labeled dataset can result in some minimal costs.
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Custom neural models have a limit on the number of models/the amount of time that models can be trained for free. The first 10 hours of training are free. If training a single model for longer than 10 hours or training multiple models that exceed the 10 hour limit, you need to enable paid training by setting a training budget. See [training a custom neural model](concept-custom-neural.md) for details.
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For `v4.0 2024-07-31-preview`, custom neural models can be trained for free for a **maximum of 10 hours**. Whether you are training a single model for the 10 hours, or training multiple models for the total of 10 hours, you won't be charged for the first 10 hours. After using up the free 10 hours, you will be **automatically charged by the extra training hour**. For details on the prices, refer to the [pricing page](https://azure.microsoft.com/pricing/details/ai-document-intelligence/). This new paid training feature enables training models for an extended duration to process larger documents. For more information on this paid training feature, check [custom neural model billing section](concept-custom-neural.md#billing).
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For v3.0 or v3.1 models the paid training tier only applies to added models, the training time per model isn't configurable.
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For `v3.0 2022-08-31` or `v3.1 2023-07-31`, custom neural models can be trained for free for a maximum of 20 training sessions, with each session capped at 30 minutes of training duration. Once you use up all of the 20 training sessions, you can submit Azure support ticket to increase the training session limit. For increasing the limit, 2 training sessions will be considered as 1 training hour, and you will be charged per 2 sessions / 1 training hour. For details on the prices, refer to the [pricing page]. For more information on ways to increase the limit, check [custom neural model billing section](concept-custom-neural.md#billing). **Note that for `v3.0` and `v3.1`, paid training feature is unavailable. Paid training feature for custom neural model is only available on `v4.0`.**
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