[v1.66.0-stable] Release notes (#9952)

* release notes

* docs release notes

* docs fix release notes

* docs clean up

* docs clean up

* release notes

* docs sso tag management

Author: ishaan-jaff

docs/my-website/img/release_notes/chat_metrics.png

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+---
+title: v1.66.0-stable
+slug: v1.66.0-stable
+date: 2025-04-12T10:00:00
+authors:
+  - name: Krrish Dholakia
+    title: CEO, LiteLLM
+    url: https://www.linkedin.com/in/krish-d/
+    image_url: https://media.licdn.com/dms/image/v2/D4D03AQGrlsJ3aqpHmQ/profile-displayphoto-shrink_400_400/B4DZSAzgP7HYAg-/0/1737327772964?e=1749686400&v=beta&t=Hkl3U8Ps0VtvNxX0BNNq24b4dtX5wQaPFp6oiKCIHD8
+  - name: Ishaan Jaffer
+    title: CTO, LiteLLM
+    url: https://www.linkedin.com/in/reffajnaahsi/
+    image_url: https://pbs.twimg.com/profile_images/1613813310264340481/lz54oEiB_400x400.jpg
+
+tags: []
+hide_table_of_contents: false
+---
+
+import Image from '@theme/IdealImage';
+import Tabs from '@theme/Tabs';
+import TabItem from '@theme/TabItem';
+
+## Deploy this version
+
+<Tabs>
+<TabItem value="docker" label="Docker">
+
+``` showLineNumbers title="docker run litellm"
+docker run
+-e STORE_MODEL_IN_DB=True
+-p 4000:4000
+ghcr.io/berriai/litellm:main-v1.66.0-stable
+```
+</TabItem>
+
+<TabItem value="pip" label="Pip">
+
+``` showLineNumbers title="pip install litellm"
+pip install litellm==1.66.0.post1
+```
+</TabItem>
+</Tabs>
+
+v1.66.0-stable is live now, here are the key highlights of this release
+
+## Key Highlights
+- **Microsoft SSO Auto-sync**: Auto-sync groups and group members from Azure Entra ID to LiteLLM
+- **Unified File IDs**: Use the same file id across LLM API providers. 
+- **New Models**: `xAI grok-3` support, `realtime api` cost tracking and logging
+- **Security Fixes**: Fixed [CVE-2025-0330](https://www.cve.org/CVERecord?id=CVE-2025-0330) and [CVE-2024-6825](https://www.cve.org/CVERecord?id=CVE-2024-6825) vulnerabilities
+
+Let's dive in.
+
+## Microsoft SSO Auto-sync
+
+<Image 
+  img={require('../../img/release_notes/sso_sync.png')}
+  style={{width: '100%', display: 'block'}}
+/>
+<p style={{textAlign: 'left', color: '#666'}}>
+  Auto-sync groups and members from Azure Entra ID to LiteLLM
+</p>
+
+This release adds support for auto-syncing groups and members on Microsoft Entra ID with LiteLLM. This means that litellm proxy administrators can spend less time managing teams and members and LiteLLM handles the following: 
+
+- Auto-create Teams that existing on Microsoft Entra ID 
+- Sync team members on Microsoft Entra ID with LiteLLM Teams
+
+Get started with this [here](https://docs.litellm.ai/docs/tutorials/msft_sso)
+
+## Unified File ID 
+
+
+
+## New Models / Updated Models
+
+- xAI
+    1. Added cost tracking for `xai/grok-3` models [PR](https://github.com/BerriAI/litellm/pull/9920)
+    2. Added reasoning_effort support for `xai/grok-3-mini-beta` model family [PR](https://github.com/BerriAI/litellm/pull/9932)
+
+- Hugging Face
+    1. Hugging Face - Added inference providers support [PR](https://github.com/BerriAI/litellm/pull/9773)
+
+- Azure
+    1. Azure - Added azure/gpt-4o-realtime-audio cost tracking [PR](https://github.com/BerriAI/litellm/pull/9893)
+
+- VertexAI
+    1. VertexAI - Added enterpriseWebSearch tool support [PR](https://github.com/BerriAI/litellm/pull/9856)
+    2. VertexAI - Moved to only passing in accepted keys by vertex ai response schema [PR](https://github.com/BerriAI/litellm/pull/8992)
+
+- Google AI Studio
+    1. Google AI Studio - Added cost tracking for `gemini-2.5-pro` [PR](https://github.com/BerriAI/litellm/pull/9837)
+    2. Google AI Studio - Fixed pricing for 'gemini/gemini-2.5-pro-preview-03-25' [PR](https://github.com/BerriAI/litellm/pull/9896)
+    3. Google AI Studio - Fixed handling file_data being passed in [PR](https://github.com/BerriAI/litellm/pull/9786)
+
+- Azure
+    1. Azure - Updated Azure Phi-4 pricing [PR](https://github.com/BerriAI/litellm/pull/9862)
+    2. Azure - Added azure/gpt-4o-realtime-audio cost tracking [PR](https://github.com/BerriAI/litellm/pull/9893)
+
+- Databricks
+    1. Databricks - Removed reasoning_effort from parameters [PR](https://github.com/BerriAI/litellm/pull/9811)
+    2. Fixed custom endpoint check for Databricks [PR](https://github.com/BerriAI/litellm/pull/9925)
+
+- General
+    1. Function Calling - Handle pydantic base model in message tool calls, handle tools = [], and support fake streaming on tool calls for meta.llama3-3-70b-instruct-v1:0 [PR](https://github.com/BerriAI/litellm/pull/9774)
+    2. LiteLLM Proxy - Allow passing `thinking` param to litellm proxy via client sdk [PR](https://github.com/BerriAI/litellm/pull/9386)
+    3. Reasoning - Added litellm.supports_reasoning() util to track if an llm supports reasoning [PR](https://github.com/BerriAI/litellm/pull/9923)
+    4. Fixed correctly translating 'thinking' param for litellm [PR](https://github.com/BerriAI/litellm/pull/9904)
+
+
+## Spend Tracking Improvements
+
+1. Realtime API Cost tracking with token usage metrics in spend logs [PR](https://github.com/BerriAI/litellm/pull/9795)
+2. Fixed Claude Haiku cache read pricing per token [PR](https://github.com/BerriAI/litellm/pull/9834)
+3. Added cost tracking for Claude responses with base_model [PR](https://github.com/BerriAI/litellm/pull/9897)
+4. Fixed Anthropic prompt caching cost calculation and trimmed logged message in db [PR](https://github.com/BerriAI/litellm/pull/9838)
+5. Added token tracking and log usage object in spend logs [PR](https://github.com/BerriAI/litellm/pull/9843)
+6. Handle custom pricing at deployment level [PR](https://github.com/BerriAI/litellm/pull/9855)
+
+
+## Management Endpoints / UI
+
+1. Test Key Tab:
+    1. Added rendering of Reasoning content, ttft, usage metrics on test key page [PR](https://github.com/BerriAI/litellm/pull/9931)
+
+    <Image 
+    img={require('../../img/release_notes/chat_metrics.png')}
+    style={{width: '100%', display: 'block'}}
+    />
+    <p style={{textAlign: 'left', color: '#666'}}>
+    View input, output, reasoning tokens, ttft metrics.
+    </p>
+2. Tag / Policy Management:
+    1. Added Tag/Policy Management [PR](https://github.com/BerriAI/litellm/pull/9813)
+
+    <Image 
+    img={require('../../img/release_notes/tag_management.png')}
+    style={{width: '100%', display: 'block'}}
+    />
+    <p style={{textAlign: 'left', color: '#666'}}>
+    Tag / Policy Management
+    </p>
+3. Redesigned Login Screen:
+    1. Polished login screen [PR](https://github.com/BerriAI/litellm/pull/9778)
+2. Microsoft SSO Auto-Sync:
+    1. Added debug route to allow admins to debug SSO JWT fields [PR](https://github.com/BerriAI/litellm/pull/9835)
+    2. Added ability to use MSFT Graph API to assign users to teams [PR](https://github.com/BerriAI/litellm/pull/9865)
+    3. Connected LiteLLM to Azure Entra ID Enterprise Application [PR](https://github.com/BerriAI/litellm/pull/9872)
+    4. Added ability for admins to set `default_team_params` for when litellm SSO creates default teams [PR](https://github.com/BerriAI/litellm/pull/9895)
+    5. Fixed MSFT SSO to use correct field for user email [PR](https://github.com/BerriAI/litellm/pull/9886)
+    6. Added UI support for setting Default Team setting when LiteLLM SSO auto creates teams [PR](https://github.com/BerriAI/litellm/pull/9918)
+5. UI Bug Fixes:
+    1. Prevented team, key, org, model numerical values changing on scrolling [PR](https://github.com/BerriAI/litellm/pull/9776)
+    2. Instantly reflect key and team updates in UI [PR](https://github.com/BerriAI/litellm/pull/9825)
+
+## Logging / Guardrail Improvements
+
+1. Prometheus:
+    - Emit Key and Team Budget metrics on a cron job schedule [PR](https://github.com/BerriAI/litellm/pull/9528)
+
+## Security Fixes
+
+1. Fixed [CVE-2025-0330](https://www.cve.org/CVERecord?id=CVE-2025-0330) - Leakage of Langfuse API keys in team exception handling [PR](https://github.com/BerriAI/litellm/pull/9830)
+2. Fixed [CVE-2024-6825](https://www.cve.org/CVERecord?id=CVE-2024-6825) - Remote code execution in post call rules [PR](https://github.com/BerriAI/litellm/pull/9826)
+
+## Helm
+
+1. Added service annotations to litellm-helm chart [PR](https://github.com/BerriAI/litellm/pull/9840)
+2. Added extraEnvVars to the helm deployment [PR](https://github.com/BerriAI/litellm/pull/9292)
+
+## Demo
+
+Try this on the demo instance [today](https://docs.litellm.ai/docs/proxy/demo)
+
+## Complete Git Diff
+
+See the complete git diff since v1.65.4-stable, [here](https://github.com/BerriAI/litellm/releases/tag/v1.66.0-stable)
+
+