F5 / FLOW-MATCHING TTS / 2024

F5-TTS v1 Base

TOTAL≈336Mparameters

ACTIVE≈336M / stepruntime path

DEPTH22repeated blocks

HIDDEN1,024main trunk

CONTEXTutterancestream / sequence

CHECKPOINT≈1.35GB1 shards · MIT

INTERACTIVE SYSTEM BLUEPRINT

MODEL MRI

128 tokens → 10 seconds · 20.33T arithmetic FLOPs · click any module for evidence

VERIFIED ADAPTER

INPUT128TOKENS

TRANSFORMER STACK22 FLOW DIT BLOCKSmasked mel infilling conditioned on text and reference audio

AdaLN DiT Residual

OUTPUT10SECONDS

wraps every repeated block

FULL MEL ATTENTION · NO EXPLICIT ALIGNMENT时长与对齐由条件 flow 内部学习，拓扑比传统 TTS pipeline 更短。

Conditional Flow Matcher同一 DiT 在 ODE 采样中重复调用，NFE 是最关键的成本旋钮。

DEPTH22DiT

HIDDEN1,024main

HEADS16attention

MEL100bins

NFE32default

PARAMS≈336Mbase