diff --git a/src/components/ha-conversation-agent-picker.ts b/src/components/ha-conversation-agent-picker.ts
index 0e3e66fbcc..2208b1555e 100644
--- a/src/components/ha-conversation-agent-picker.ts
+++ b/src/components/ha-conversation-agent-picker.ts
@@ -17,6 +17,7 @@ import "./ha-select";
 import type { HaSelect } from "./ha-select";
 
 const NONE = "__NONE_OPTION__";
+
 @customElement("ha-conversation-agent-picker")
 export class HaConversationAgentPicker extends LitElement {
   @property() public value?: string;
@@ -43,7 +44,7 @@ export class HaConversationAgentPicker extends LitElement {
       (!this.language ||
         this._agents
           .find((agent) => agent.id === "homeassistant")
-          ?.supported_languages?.includes(this.language))
+          ?.supported_languages.includes(this.language))
         ? "homeassistant"
         : NONE);
     return html`
@@ -71,7 +72,8 @@ export class HaConversationAgentPicker extends LitElement {
           (agent) =>
             html`<ha-list-item
               .value=${agent.id}
-              .disabled=${agent.supported_languages?.length === 0}
+              .disabled=${agent.supported_languages !== "*" &&
+              agent.supported_languages.length === 0}
             >
               ${agent.name}
             </ha-list-item>`
@@ -110,7 +112,11 @@ export class HaConversationAgentPicker extends LitElement {
       value: selectedAgent?.supported_languages,
     });
 
-    if (!selectedAgent || selectedAgent.supported_languages?.length === 0) {
+    if (
+      !selectedAgent ||
+      (selectedAgent.supported_languages !== "*" &&
+        selectedAgent.supported_languages.length === 0)
+    ) {
       this.value = undefined;
       fireEvent(this, "value-changed", { value: this.value });
     }
@@ -148,6 +154,6 @@ declare global {
     "ha-conversation-agent-picker": HaConversationAgentPicker;
   }
   interface HASSDomEvents {
-    "supported-languages-changed": { value: string[] | undefined };
+    "supported-languages-changed": { value: "*" | string[] | undefined };
   }
 }
diff --git a/src/components/ha-language-picker.ts b/src/components/ha-language-picker.ts
index 49c5b419bb..ac8a11579d 100644
--- a/src/components/ha-language-picker.ts
+++ b/src/components/ha-language-picker.ts
@@ -27,6 +27,8 @@ export class HaLanguagePicker extends LitElement {
 
   @property({ type: Boolean }) public nativeName = false;
 
+  @property({ type: Boolean }) public noSort = false;
+
   @state() _defaultLanguages: string[] = [];
 
   @query("ha-select") private _select!: HaSelect;
@@ -77,9 +79,11 @@ export class HaLanguagePicker extends LitElement {
         }));
       }
 
-      options.sort((a, b) =>
-        caseInsensitiveStringCompare(a.label, b.label, locale.language)
-      );
+      if (!this.noSort) {
+        options.sort((a, b) =>
+          caseInsensitiveStringCompare(a.label, b.label, locale.language)
+        );
+      }
       return options;
     }
   );
diff --git a/src/components/ha-selector/ha-selector-language.ts b/src/components/ha-selector/ha-selector-language.ts
index b9b76362d6..79b6dc69f2 100644
--- a/src/components/ha-selector/ha-selector-language.ts
+++ b/src/components/ha-selector/ha-selector-language.ts
@@ -29,6 +29,7 @@ export class HaLanguageSelector extends LitElement {
         .helper=${this.helper}
         .languages=${this.selector.language?.languages}
         .nativeName=${Boolean(this.selector?.language?.native_name)}
+        .noSort=${Boolean(this.selector?.language?.no_sort)}
         .disabled=${this.disabled}
         .required=${this.required}
       ></ha-language-picker>
diff --git a/src/components/ha-tts-voice-picker.ts b/src/components/ha-tts-voice-picker.ts
index ace393379d..ce4830df64 100644
--- a/src/components/ha-tts-voice-picker.ts
+++ b/src/components/ha-tts-voice-picker.ts
@@ -6,7 +6,7 @@ import {
   nothing,
   PropertyValues,
 } from "lit";
-import { customElement, property, state } from "lit/decorators";
+import { customElement, property, query, state } from "lit/decorators";
 import { fireEvent } from "../common/dom/fire_event";
 import { stopPropagation } from "../common/dom/stop_propagation";
 import { debounce } from "../common/util/debounce";
@@ -36,6 +36,8 @@ export class HaTTSVoicePicker extends LitElement {
 
   @state() _voices?: TTSVoice[] | null;
 
+  @query("ha-select") private _select!: HaSelect;
+
   protected render() {
     if (!this._voices) {
       return nothing;
@@ -104,6 +106,14 @@ export class HaTTSVoicePicker extends LitElement {
     }
   }
 
+  protected updated(changedProperties: PropertyValues<this>) {
+    super.updated(changedProperties);
+    if (changedProperties.has("_voices") && this._select.value !== this.value) {
+      this._select.layoutOptions();
+      fireEvent(this, "value-changed", { value: this._select.value });
+    }
+  }
+
   static get styles(): CSSResultGroup {
     return css`
       ha-select {
diff --git a/src/data/conversation.ts b/src/data/conversation.ts
index f8427f779d..a51006a562 100644
--- a/src/data/conversation.ts
+++ b/src/data/conversation.ts
@@ -59,7 +59,7 @@ export interface AgentInfo {
 export interface Agent {
   id: string;
   name: string;
-  supported_languages?: string[];
+  supported_languages: "*" | string[];
 }
 
 export const processConversationInput = (
diff --git a/src/data/selector.ts b/src/data/selector.ts
index 3376191bed..fcfa1ac983 100644
--- a/src/data/selector.ts
+++ b/src/data/selector.ts
@@ -215,6 +215,7 @@ export interface LanguageSelector {
   language: {
     languages?: string[];
     native_name?: boolean;
+    no_sort?: boolean;
   } | null;
 }
 
diff --git a/src/panels/config/voice-assistants/assist-pipeline-detail/assist-pipeline-detail-conversation.ts b/src/panels/config/voice-assistants/assist-pipeline-detail/assist-pipeline-detail-conversation.ts
index 4fc2c49610..6f75b38aa5 100644
--- a/src/panels/config/voice-assistants/assist-pipeline-detail/assist-pipeline-detail-conversation.ts
+++ b/src/panels/config/voice-assistants/assist-pipeline-detail/assist-pipeline-detail-conversation.ts
@@ -5,6 +5,7 @@ import { LocalizeKeys } from "../../../../common/translations/localize";
 import { AssistPipeline } from "../../../../data/assist_pipeline";
 import { HomeAssistant } from "../../../../types";
 import "../../../../components/ha-form/ha-form";
+import { fireEvent } from "../../../../common/dom/fire_event";
 
 @customElement("assist-pipeline-detail-conversation")
 export class AssistPipelineDetailConversation extends LitElement {
@@ -12,10 +13,10 @@ export class AssistPipelineDetailConversation extends LitElement {
 
   @property() public data?: Partial<AssistPipeline>;
 
-  @state() private _supportedLanguages?: string[];
+  @state() private _supportedLanguages?: "*" | string[];
 
   private _schema = memoizeOne(
-    (language?: string, supportedLanguages?: string[]) =>
+    (language?: string, supportedLanguages?: "*" | string[]) =>
       [
         {
           name: "",
@@ -30,12 +31,12 @@ export class AssistPipelineDetailConversation extends LitElement {
                 },
               },
             },
-            supportedLanguages?.length
+            supportedLanguages !== "*" && supportedLanguages?.length
               ? {
                   name: "conversation_language",
                   required: true,
                   selector: {
-                    language: { languages: supportedLanguages },
+                    language: { languages: supportedLanguages, no_sort: true },
                   },
                 }
               : { name: "", type: "constant" },
@@ -73,6 +74,14 @@ export class AssistPipelineDetailConversation extends LitElement {
   }
 
   private _supportedLanguagesChanged(ev) {
+    if (ev.detail.value === "*") {
+      // wait for update of conversation_engine
+      setTimeout(() => {
+        const value = { ...this.data };
+        value.conversation_language = "*";
+        fireEvent(this, "value-changed", { value });
+      }, 0);
+    }
     this._supportedLanguages = ev.detail.value;
   }
 
diff --git a/src/panels/config/voice-assistants/assist-pipeline-detail/assist-pipeline-detail-stt.ts b/src/panels/config/voice-assistants/assist-pipeline-detail/assist-pipeline-detail-stt.ts
index e0f9fad801..deb5c603c3 100644
--- a/src/panels/config/voice-assistants/assist-pipeline-detail/assist-pipeline-detail-stt.ts
+++ b/src/panels/config/voice-assistants/assist-pipeline-detail/assist-pipeline-detail-stt.ts
@@ -34,7 +34,7 @@ export class AssistPipelineDetailSTT extends LitElement {
                   name: "stt_language",
                   required: true,
                   selector: {
-                    language: { languages: supportedLanguages },
+                    language: { languages: supportedLanguages, no_sort: true },
                   },
                 }
               : { name: "", type: "constant" },
diff --git a/src/panels/config/voice-assistants/assist-pipeline-detail/assist-pipeline-detail-tts.ts b/src/panels/config/voice-assistants/assist-pipeline-detail/assist-pipeline-detail-tts.ts
index 605600176c..be72b4913f 100644
--- a/src/panels/config/voice-assistants/assist-pipeline-detail/assist-pipeline-detail-tts.ts
+++ b/src/panels/config/voice-assistants/assist-pipeline-detail/assist-pipeline-detail-tts.ts
@@ -34,7 +34,7 @@ export class AssistPipelineDetailTTS extends LitElement {
                   name: "tts_language",
                   required: true,
                   selector: {
-                    language: { languages: supportedLanguages },
+                    language: { languages: supportedLanguages, no_sort: true },
                   },
                 }
               : { name: "", type: "constant" },
diff --git a/src/panels/profile/ha-pick-language-row.ts b/src/panels/profile/ha-pick-language-row.ts
index d33eb48941..1ee3074b09 100644
--- a/src/panels/profile/ha-pick-language-row.ts
+++ b/src/panels/profile/ha-pick-language-row.ts
@@ -44,7 +44,7 @@ export class HaPickLanguageRow extends LitElement {
     // Only fire event if language was changed. This prevents select updates when
     // responding to hass changes.
     if (ev.detail.value !== this.hass.language) {
-      fireEvent(this, "hass-language-select", ev.target.value);
+      fireEvent(this, "hass-language-select", ev.detail.value);
     }
   }