# 2025.36 Infrastructure Changes

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# Changes on Application environment [Copy link to this section](https://docs.unique.ai/it-operators/installing-and-upgrading-unique/release-notes-and-calendar/release-notes-2025/release-2025-36/2025-36-infrastructure-changes#changes-on-application-environment "Copy link to this section")

| **Change** | **Name** | **Default** | **Example** | **Required** | **Applications** | **Short Description** |  |
|------------|--------|----------|----------|----------|----------------|----------------------------------|--|
| New        | `FEATURE_FLAG_ENABLE_DEEP_RESEARCH_UN_12630` | `false` | `true` | No | `next-chat`<br>`next-admin` | Enables deep research tool and functionalities in chat and admin.<br>NB: The feature is still experimental |  |
| New        | `DEEP_RESEARCH_MAX_PARALLEL_EXECUTIONS_PER_COMPANY` | `1` | `10` | No | `node-chat` | Specifies how many parallel deep research executions are allowed for each company |  |
| New        | `UNIQUEAI_ALLOWED_MODELS` | - | `*:model1,model2;companyId:model3,model4` | No | `node-chat` | Allows filtering LLM models to only a subset of whitelisted models on Unique AI module |  |