diff --git a/openless-all/app/src-tauri/src/coordinator.rs b/openless-all/app/src-tauri/src/coordinator.rs
index 534ae37c..71bea4d3 100644
--- a/openless-all/app/src-tauri/src/coordinator.rs
+++ b/openless-all/app/src-tauri/src/coordinator.rs
@@ -25,7 +25,7 @@ use crate::asr::local::{
     foundry, sherpa, FoundryLocalRuntime, FoundryLocalWhisperAsr, SherpaOnnxAsr, SherpaOnnxRuntime,
 };
 use crate::asr::{
-    BailianCredentials, BailianRealtimeASR, DictionaryHotword, MimoBatchASR, RawTranscript,
+    pcm, BailianCredentials, BailianRealtimeASR, DictionaryHotword, MimoBatchASR, RawTranscript,
     VolcengineCredentials, VolcengineStreamingASR, WhisperBatchASR,
 };
 use crate::combo_hotkey::{ComboHotkeyError, ComboHotkeyEvent, ComboHotkeyMonitor};
@@ -874,7 +874,7 @@ impl Coordinator {
     /// 用**当前配置的** ASR provider 对一段已归档的 16k/mono/16-bit PCM 重新转录
     /// （issue #613「重新转录」）。复用 `build_qa_asr_start`，对所有 provider 统一：
     /// 流式 provider 先 open_session 再灌音并取 final，批处理 provider 直接灌音后
-    /// transcribe。整段超时走 COORDINATOR_GLOBAL_TIMEOUT_SECS 兜底，防止挂死。
+    /// transcribe。整段转写按 provider 设置超时，防止挂死。
     ///
     /// 只做 ASR，不做润色/落字/写历史 —— 回写历史由 command 层完成，保持本方法纯粹。
     pub async fn retranscribe_pcm(&self, pcm: Vec<u8>) -> Result<String, String> {
@@ -884,6 +884,7 @@ impl Coordinator {
         start.open_streaming_session().await?;
         let consumer = start.recorder_consumer();
         consumer.consume_pcm_chunk(&pcm);
+        let audio_secs = (pcm::pcm_duration_ms(&pcm) as f64) / 1000.0;
         let timeout = std::time::Duration::from_secs(COORDINATOR_GLOBAL_TIMEOUT_SECS);
         let raw = match start.active_asr() {
             ActiveAsr::Volcengine(asr) => {
@@ -900,10 +901,13 @@ impl Coordinator {
                     .map_err(|_| "重新转录超时".to_string())?
                     .map_err(|e| e.to_string())?
             }
-            ActiveAsr::Whisper(w) => tokio::time::timeout(timeout, w.transcribe())
-                .await
-                .map_err(|_| "重新转录超时".to_string())?
-                .map_err(|e| e.to_string())?,
+            ActiveAsr::Whisper(w) => {
+                let timeout = cloud_whisper_transcribe_timeout(audio_secs);
+                tokio::time::timeout(timeout, w.transcribe())
+                    .await
+                    .map_err(|_| "重新转录超时".to_string())?
+                    .map_err(|e| e.to_string())?
+            }
             ActiveAsr::Mimo(m) => tokio::time::timeout(timeout, m.transcribe())
                 .await
                 .map_err(|_| "重新转录超时".to_string())?
@@ -931,6 +935,14 @@ impl Coordinator {
                 asr_setup::schedule_local_asr_release(inner);
                 out
             }
+            #[cfg(target_os = "macos")]
+            ActiveAsr::AppleSpeech(local) => {
+                let dur = asr_setup::local_qwen_transcribe_timeout(audio_secs);
+                tokio::time::timeout(dur, local.transcribe())
+                    .await
+                    .map_err(|_| "重新转录超时".to_string())?
+                    .map_err(|e| e.to_string())?
+            }
         };
         Ok(raw.text)
     }
diff --git a/openless-all/app/src-tauri/src/coordinator/asr_setup.rs b/openless-all/app/src-tauri/src/coordinator/asr_setup.rs
index 326a5036..54804f83 100644
--- a/openless-all/app/src-tauri/src/coordinator/asr_setup.rs
+++ b/openless-all/app/src-tauri/src/coordinator/asr_setup.rs
@@ -467,6 +467,8 @@ pub(crate) async fn build_qa_asr_start(
 /// 设置为 15 秒（比 ASR 的 12 秒 FINAL_RESULT_TIMEOUT 稍长），
 /// 只在 ASR 超时机制失效时作为最后的防线触发。
 pub(crate) const COORDINATOR_GLOBAL_TIMEOUT_SECS: u64 = 15;
+pub(crate) const CLOUD_WHISPER_MIN_TIMEOUT_SECS: u64 = 30;
+pub(crate) const CLOUD_WHISPER_MAX_TIMEOUT_SECS: u64 = 300;
 
 #[cfg(target_os = "windows")]
 pub(crate) fn foundry_audio_transcribe_timeout_duration() -> std::time::Duration {
@@ -484,6 +486,17 @@ pub(crate) fn local_qwen_transcribe_timeout(audio_secs: f64) -> std::time::Durat
     std::time::Duration::from_secs(secs)
 }
 
+/// Cloud Whisper/Groq ASR 的批量转写超时。短录音给 30s 余量；长录音按音频长度
+/// 扩展，避免数分钟录音被 15s coordinator guard 提前丢弃。5 分钟上限仍保留为
+/// 外部 API 卡死时的最后防线。
+pub(crate) fn cloud_whisper_transcribe_timeout(audio_secs: f64) -> std::time::Duration {
+    let scaled = ((audio_secs * 0.5).ceil() as u64).saturating_add(15);
+    let secs = scaled
+        .max(CLOUD_WHISPER_MIN_TIMEOUT_SECS)
+        .min(CLOUD_WHISPER_MAX_TIMEOUT_SECS);
+    std::time::Duration::from_secs(secs)
+}
+
 /// sherpa-onnx offline batch 暂与 Foundry 同档；后续按 Windows 真机 CPU/模型
 /// 实测结果再调整。
 #[cfg(target_os = "windows")]
diff --git a/openless-all/app/src-tauri/src/coordinator/dictation_end.rs b/openless-all/app/src-tauri/src/coordinator/dictation_end.rs
index 5639f5cb..ac4411ec 100644
--- a/openless-all/app/src-tauri/src/coordinator/dictation_end.rs
+++ b/openless-all/app/src-tauri/src/coordinator/dictation_end.rs
@@ -106,8 +106,13 @@ pub(crate) async fn end_session(inner: &Arc<Inner>) -> Result<(), String> {
         }
         ActiveAsr::Whisper(w) => {
             debug_assert!(uses_global_timeout);
-            // Whisper 也添加类似的超时保护
-            let timeout_duration = std::time::Duration::from_secs(COORDINATOR_GLOBAL_TIMEOUT_SECS);
+            let audio_secs = elapsed as f64 / 1000.0;
+            let timeout_duration = cloud_whisper_transcribe_timeout(audio_secs);
+            log::info!(
+                "[coord] whisper transcribe: audio={:.2}s timeout={}s",
+                audio_secs,
+                timeout_duration.as_secs()
+            );
             match tokio::time::timeout(timeout_duration, w.transcribe()).await {
                 Ok(Ok(r)) => r,
                 Ok(Err(e)) => {
@@ -129,7 +134,7 @@ pub(crate) async fn end_session(inner: &Arc<Inner>) -> Result<(), String> {
                 Err(_) => {
                     log::error!(
                         "[coord] whisper 全局超时 {} 秒",
-                        COORDINATOR_GLOBAL_TIMEOUT_SECS
+                        timeout_duration.as_secs()
                     );
                     write_transcribe_failed_history(inner, current_session_id, elapsed);
                     emit_capsule(
diff --git a/openless-all/app/src-tauri/src/coordinator/tests.rs b/openless-all/app/src-tauri/src/coordinator/tests.rs
index 2d94a906..3a615374 100644
--- a/openless-all/app/src-tauri/src/coordinator/tests.rs
+++ b/openless-all/app/src-tauri/src/coordinator/tests.rs
@@ -343,6 +343,48 @@ fn local_qwen_timeout_handles_zero_duration() {
     );
 }
 
+#[test]
+fn cloud_whisper_timeout_has_longer_floor_than_global_guard() {
+    assert_eq!(
+        cloud_whisper_transcribe_timeout(5.0),
+        std::time::Duration::from_secs(CLOUD_WHISPER_MIN_TIMEOUT_SECS)
+    );
+}
+
+#[test]
+fn cloud_whisper_timeout_handles_zero_duration() {
+    assert_eq!(
+        cloud_whisper_transcribe_timeout(0.0),
+        std::time::Duration::from_secs(CLOUD_WHISPER_MIN_TIMEOUT_SECS)
+    );
+}
+
+#[test]
+fn cloud_whisper_timeout_scales_for_long_recordings() {
+    // 422s recording: ceil(422 * 0.5) + 15 = 226s. Do not drop it at 15s.
+    assert_eq!(
+        cloud_whisper_transcribe_timeout(422.0),
+        std::time::Duration::from_secs(226)
+    );
+}
+
+#[test]
+fn cloud_whisper_timeout_is_capped() {
+    assert_eq!(
+        cloud_whisper_transcribe_timeout(1_000.0),
+        std::time::Duration::from_secs(CLOUD_WHISPER_MAX_TIMEOUT_SECS)
+    );
+}
+
+#[test]
+fn cloud_whisper_timeout_preserves_exact_cap_boundary() {
+    // ceil(570 * 0.5) + 15 = 300s, exactly at the cap.
+    assert_eq!(
+        cloud_whisper_transcribe_timeout(570.0),
+        std::time::Duration::from_secs(CLOUD_WHISPER_MAX_TIMEOUT_SECS)
+    );
+}
+
 #[cfg(target_os = "windows")]
 #[test]
 fn foundry_release_uses_foundry_keep_loaded_preference() {