diff --git a/.openclaw-sync/source.json b/.openclaw-sync/source.json
index 5ec6579c9..2b40728d6 100644
--- a/.openclaw-sync/source.json
+++ b/.openclaw-sync/source.json
@@ -1,15 +1,15 @@
 {
   "repository": "openclaw/openclaw",
-  "sha": "30e079dd89b451ca22cb360ca887bd9367cc7939",
+  "sha": "5457462e62670839b1b7d793e22f7f38a76b8b0c",
   "sources": {
     "openclaw": {
       "repository": "openclaw/openclaw",
-      "sha": "30e079dd89b451ca22cb360ca887bd9367cc7939"
+      "sha": "5457462e62670839b1b7d793e22f7f38a76b8b0c"
     },
     "clawhub": {
       "repository": "openclaw/clawhub",
       "sha": "38c21345906ab1f107a91b33bb86b63667d96643"
     }
   },
-  "syncedAt": "2026-05-08T13:03:40.138Z"
+  "syncedAt": "2026-05-08T13:17:34.583Z"
 }
diff --git a/docs/channels/discord.md b/docs/channels/discord.md
index aec9b12ea..e27675fa4 100644
--- a/docs/channels/discord.md
+++ b/docs/channels/discord.md
@@ -1172,6 +1172,7 @@ Auto-join example:
     discord: {
       voice: {
         enabled: true,
+        mode: "stt-tts",
         model: "openai/gpt-5.4-mini",
         autoJoin: [
           {
@@ -1199,8 +1200,10 @@ Auto-join example:
 Notes:
 
 - `voice.tts` overrides `messages.tts` for voice playback only.
-- `voice.model` overrides the LLM used for Discord voice channel responses only. Leave it unset to inherit the routed agent model. Do not set this to `gpt-realtime-2`; Discord voice channels use STT plus TTS playback, not the OpenAI Realtime session transport.
-- STT uses `tools.media.audio`; `voice.model` does not affect transcription.
+- `voice.mode` controls the conversation path: `stt-tts` keeps the existing batch STT plus TTS flow, `talk-buffer` uses a realtime voice shell for turn timing/transcription/playback while the OpenClaw agent produces the answer, and `bidi` lets the realtime model converse directly while exposing `openclaw_agent_consult` for the OpenClaw brain.
+- `voice.model` overrides the OpenClaw agent brain for Discord voice responses and realtime consults. Leave it unset to inherit the routed agent model. It is separate from `voice.realtime.model`.
+- In `stt-tts` mode, STT uses `tools.media.audio`; `voice.model` does not affect transcription.
+- In realtime modes, `voice.realtime.provider`, `voice.realtime.model`, and `voice.realtime.voice` configure the realtime audio session. For OpenAI Realtime 2 plus the Codex brain, use `voice.realtime.model: "gpt-realtime-2"` and `voice.model: "openai-codex/gpt-5.5"`.
 - For an OpenAI voice on Discord playback, set `voice.tts.provider: "openai"` and choose a Text-to-speech voice under `voice.tts.openai.voice` or `voice.tts.providers.openai.voice`. `cedar` is a good masculine-sounding choice on the current OpenAI TTS model.
 - Per-channel Discord `systemPrompt` overrides apply to voice transcript turns for that voice channel.
 - Voice transcript turns derive owner status from Discord `allowFrom` (or `dm.allowFrom`); non-owner speakers cannot access owner-only tools (for example `gateway` and `cron`).
@@ -1211,7 +1214,7 @@ Notes:
 - `@discordjs/voice` defaults are `daveEncryption=true` and `decryptionFailureTolerance=24` if unset.
 - `voice.connectTimeoutMs` controls the initial `@discordjs/voice` Ready wait for `/vc join` and auto-join attempts. Default: `30000`.
 - `voice.reconnectGraceMs` controls how long OpenClaw waits for a disconnected voice session to begin reconnecting before destroying it. Default: `15000`.
-- Voice playback does not stop just because another user starts speaking. To avoid feedback loops, OpenClaw ignores new voice capture while TTS is playing; speak after playback finishes for the next turn.
+- In `stt-tts` mode, voice playback does not stop just because another user starts speaking. To avoid feedback loops, OpenClaw ignores new voice capture while TTS is playing; speak after playback finishes for the next turn. Realtime modes forward speaker starts as barge-in signals to the realtime provider.
 - `voice.captureSilenceGraceMs` controls how long OpenClaw waits after Discord reports a speaker has stopped before finalizing that audio segment for STT. Default: `2500`; raise this if Discord splits normal pauses into choppy partial transcripts.
 - When ElevenLabs is the selected TTS provider, Discord voice playback uses streaming TTS and starts from the provider response stream. Providers without streaming support fall back to the synthesized temp-file path.
 - OpenClaw also watches receive decrypt failures and auto-recovers by leaving/rejoining the voice channel after repeated failures in a short window.
@@ -1219,7 +1222,7 @@ Notes:
 - `The operation was aborted` receive events are expected when OpenClaw finalizes a captured speaker segment; they are verbose diagnostics, not warnings.
 - Verbose Discord voice logs include a bounded one-line STT transcript preview for each accepted speaker segment, so debugging shows both the user side and the agent reply side without dumping unbounded transcript text.
 
-Voice channel pipeline:
+STT plus TTS pipeline:
 
 - Discord PCM capture is converted to a WAV temp file.
 - `tools.media.audio` handles STT, for example `openai/gpt-4o-mini-transcribe`.
@@ -1227,7 +1230,51 @@ Voice channel pipeline:
 - `voice.model`, when set, overrides only the response LLM for this voice-channel turn.
 - `voice.tts` is merged over `messages.tts`; streaming-capable providers feed the player directly, otherwise the resulting audio file is played in the joined channel.
 
-Credentials are resolved per component: LLM route auth for `voice.model`, STT auth for `tools.media.audio`, and TTS auth for `messages.tts`/`voice.tts`.
+Realtime talk-buffer example:
+
+```json5
+{
+  channels: {
+    discord: {
+      voice: {
+        enabled: true,
+        mode: "talk-buffer",
+        model: "openai-codex/gpt-5.5",
+        realtime: {
+          provider: "openai",
+          model: "gpt-realtime-2",
+          voice: "cedar",
+        },
+      },
+    },
+  },
+}
+```
+
+Realtime bidi example:
+
+```json5
+{
+  channels: {
+    discord: {
+      voice: {
+        enabled: true,
+        mode: "bidi",
+        model: "openai-codex/gpt-5.5",
+        realtime: {
+          provider: "openai",
+          model: "gpt-realtime-2",
+          voice: "cedar",
+          toolPolicy: "safe-read-only",
+          consultPolicy: "always",
+        },
+      },
+    },
+  },
+}
+```
+
+Credentials are resolved per component: LLM route auth for `voice.model`, STT auth for `tools.media.audio`, TTS auth for `messages.tts`/`voice.tts`, and realtime provider auth for `voice.realtime.providers` or the provider's normal auth config.
 
 ### Voice messages