diff --git a/Sources/FluidAudio/ModelNames.swift b/Sources/FluidAudio/ModelNames.swift
index d60fa6198..f77123c7a 100644
--- a/Sources/FluidAudio/ModelNames.swift
+++ b/Sources/FluidAudio/ModelNames.swift
@@ -1571,7 +1571,10 @@ public enum ModelNames {
         public static let albert = "KokoroAlbert.mlmodelc"
         public static let postAlbert = "KokoroPostAlbert.mlmodelc"
         public static let alignment = "KokoroAlignment.mlmodelc"
-        public static let prosody = "KokoroProsody.mlmodelc"
+        // v2: fp32 compute. The fp16 CPU/ANE path corrupts F0/N at the start of
+        // the utterance for many T_a >= 400 (quiet/garbled onset). Renamed (not
+        // overwritten) so cached clients re-download. See issue #947.
+        public static let prosody = "KokoroProsody_v2.mlmodelc"
         // v2: atan2 phase-correction in the noise-source STFT (removes broad-spectrum
         // HF noise / "sharpness"). Renamed (not overwritten) so cached clients
         // re-download. See mobius laishere-coreml docs/trials-and-errors.md.
diff --git a/Sources/FluidAudio/TTS/KokoroAne/Pipeline/KokoroAneSynthesizer+Types.swift b/Sources/FluidAudio/TTS/KokoroAne/Pipeline/KokoroAneSynthesizer+Types.swift
index 3d16d4ddc..971c62b65 100644
--- a/Sources/FluidAudio/TTS/KokoroAne/Pipeline/KokoroAneSynthesizer+Types.swift
+++ b/Sources/FluidAudio/TTS/KokoroAne/Pipeline/KokoroAneSynthesizer+Types.swift
@@ -112,7 +112,7 @@ public enum KokoroAneStage: String, CaseIterable, Sendable {
         case .albert: return "KokoroAlbert.mlmodelc"
         case .postAlbert: return "KokoroPostAlbert.mlmodelc"
         case .alignment: return "KokoroAlignment.mlmodelc"
-        case .prosody: return "KokoroProsody.mlmodelc"
+        case .prosody: return "KokoroProsody_v2.mlmodelc"  // v2: fp32 compute (long-utterance onset fix, #947)
         case .noise: return "KokoroNoise_v2.mlmodelc"  // v2: atan2 phase-correction (HF-noise fix)
         case .vocoder: return "KokoroVocoder.mlmodelc"
         case .tail: return "KokoroTail_v2.mlmodelc"  // v2: COLA-normalized iSTFT (level fix, #852)
diff --git a/Tests/FluidAudioTests/TTS/KokoroAne/KokoroAneSynthesizerTests.swift b/Tests/FluidAudioTests/TTS/KokoroAne/KokoroAneSynthesizerTests.swift
index 815f92b2f..5f4efb5cd 100644
--- a/Tests/FluidAudioTests/TTS/KokoroAne/KokoroAneSynthesizerTests.swift
+++ b/Tests/FluidAudioTests/TTS/KokoroAne/KokoroAneSynthesizerTests.swift
@@ -3,6 +3,21 @@ import XCTest
 
 @testable import FluidAudio
 
+/// Stage bundle names must match the download set, including the renamed v2 bundles.
+final class KokoroAneStageBundleNameTests: XCTestCase {
+
+    func testStageBundlesMatchRequiredDownloadSet() {
+        let bundles = Set(KokoroAneStage.allCases.map(\.bundleName))
+        XCTAssertEqual(bundles, ModelNames.KokoroAne.requiredCoreMLModels)
+    }
+
+    func testProsodyUsesFp32ComputeBundle() {
+        // v1 fp16 Prosody corrupts F0/N at the utterance onset for many T_a >= 400 (#947).
+        XCTAssertEqual(KokoroAneStage.prosody.bundleName, "KokoroProsody_v2.mlmodelc")
+        XCTAssertEqual(ModelNames.KokoroAne.prosody, "KokoroProsody_v2.mlmodelc")
+    }
+}
+
 /// Lightweight tests for the pure duration-rounding helper (no models needed).
 final class KokoroAnePredictedDurationTests: XCTestCase {