diff --git a/docs/release_notes.md b/docs/release_notes.md
index 1daf4b5fb..ecdfeea14 100644
--- a/docs/release_notes.md
+++ b/docs/release_notes.md
@@ -12,9 +12,9 @@
 
 ### ✨ New Functionality
 
-- [Orchestration] Added `GEMINI_3_1_FLASH_LITE` to model list in `OrchestrationAiModel`.
 - [Batch] Added a new `BatchesApi` client to access the [Batch Service API](https://github.tools.sap/AI/llm-batch-service).
-- Added new OpenAI GPT-5.5 model: `OpenAiModel.GPT_55`and `OrchestrationAiModel.GPT_55`.
+- [Orchestration] Added `GEMINI_3_1_FLASH_LITE`, `GEMINI_3_5_FLASH`, `GPT_55`, `SONAR_DEEP_RESEARCH`, and `LLAMA_CINDERELLA_DN`  to model list in `OrchestrationAiModel`.
+- [OpenAI] Added `GPT_55` to model list in `OpenAiModel`.
 
 ### 📈 Improvements
 
diff --git a/orchestration/src/main/java/com/sap/ai/sdk/orchestration/OrchestrationAiModel.java b/orchestration/src/main/java/com/sap/ai/sdk/orchestration/OrchestrationAiModel.java
index db3ade844..06b6beb08 100644
--- a/orchestration/src/main/java/com/sap/ai/sdk/orchestration/OrchestrationAiModel.java
+++ b/orchestration/src/main/java/com/sap/ai/sdk/orchestration/OrchestrationAiModel.java
@@ -108,6 +108,10 @@ public class OrchestrationAiModel {
   public static final OrchestrationAiModel LLAMA3_1_70B_INSTRUCT =
       new OrchestrationAiModel("meta--llama3.1-70b-instruct");
 
+  /** Meta Llama Cinderella DN model */
+  public static final OrchestrationAiModel LLAMA_CINDERELLA_DN =
+      new OrchestrationAiModel("llama-cinderella-dn");
+
   /** Cohere Command a Reasoning model */
   public static final OrchestrationAiModel COHERE_COMMAND_A_REASONING =
       new OrchestrationAiModel("cohere--command-a-reasoning");
@@ -409,6 +413,10 @@ public class OrchestrationAiModel {
   public static final OrchestrationAiModel GEMINI_3_1_FLASH_LITE =
       new OrchestrationAiModel("gemini-3.1-flash-lite");
 
+  /** Google Cloud Platform Gemini 3.5 Flash model */
+  public static final OrchestrationAiModel GEMINI_3_5_FLASH =
+      new OrchestrationAiModel("gemini-3.5-flash");
+
   /**
    * Alephalpha-pharia-1-7b-control model
    *
@@ -434,6 +442,10 @@ public class OrchestrationAiModel {
   /** Perplexity AI Sonar Pro model */
   public static final OrchestrationAiModel SONAR_PRO = new OrchestrationAiModel("sonar-pro");
 
+  /** Perplexity AI Sonar Deep Research model */
+  public static final OrchestrationAiModel SONAR_DEEP_RESEARCH =
+      new OrchestrationAiModel("sonar-deep-research");
+
   /** SAP ABAP 1 model */
   public static final OrchestrationAiModel SAP_ABAP_1 = new OrchestrationAiModel("sap-abap-1");