Dify Workflow Text to Speech (TTS) Tools or Plugins
Dify workflow Text-to-Speech (TTS) allows you to convert a generated or submitted text into an audio file seamlessly.
Dify has different TTS tools or plugins, and the main difference between them is the voice tech behind them.
That determines the amount of voice control they offer, supported formats they allow, and whether they are mainly for TTS or for broader audio production.
Fish Audio
Fish Audio is one of the simplest TTS tools in Dify.
Once you install the plugin, add a Fish Audio API key, then place its TTS node in a Workflow, pass your text into it, select a Voice ID of your choice, and the node returns generated speech.
It is easy to convert AI-generated text, scripts, and other writings into voice without adding another processing layer.
The workflow can generate text first and immediately send that text to Fish Audio.
This tool also exists as a Dify model provider, supporting TTS and ASR, so developers have both the dedicated tool and provider-style integration available.
MiniMax TTS
MiniMax has a dedicated TTS plugin as well as a broader MiniMax model provider.
The plugin requires a MiniMax group_id and API key so the TTS function can be called directly from a Dify workflow.
It works like a conventional API-backed TTS node where the workflow produces text, the MiniMax tool receives it, and the service generates the audio.
On the other hand, the broader MiniMax provider works when the same Dify application also needs MiniMax language models, embeddings or TTS rather than maintaining separate integrations.
OpenAI TTS
The OpenAI Dify plugin is broader than a standalone TTS tool. It allows Dify to be connected to OpenAI’s language, embedding, moderation and audio models, including text-to-speech (TTS) and speech-to-text (STT)
It also supports TTS streaming, so you can incorporate speech generation into apps that use OpenAI models.
For example, if you use ChatGPT to generate your text, you don’t have to send it to a separate provider, Dify would be able to handle the text-generation and speech stages.
ElevenLabs
ElevenLabs is designed around natural-sounding voice synthesis and can also turn speech to text.
It allows selection of voices, including different voice characteristics and accents.
It is also simple to deploy. Install the ElevenLabs Dify provider, enter its API key, select your preferred voice and enter your text into TTS.
It is useful for narration, voice-over and other audio where voice character is important.
The Dify Podcast Studio plugin can use both OpenAI and ElevenLabs to assign different voices to two hosts and convert it to a formatted script, and podcast content.
DupDub
DupDub does more than basic text-to-speech conversion. Its integration with Dify allows speech transcription, voice cloning and dubbing, as the name suggests.
The voice-cloning function creates a reusable speaker identity from a voice sample, while dubbing can synthesise speech using the cloned speaker together with controls such as speed and pitch.
DupDub is therefore more appropriate for workflows that involve voice replication, multilingual dubbing or recurring branded voices than a workflow that simply needs to read text aloud.
EdgeTTS
The EdgeTTS plugin is a more specialised option. It supports multiple voices, speech-speed control from 0.25× to 4× and MP3, WAV and FLAC output.
You can use up to 5,000, and it has several Chinese neural voices.
To use it, add the plugin to a workflow, paste the text, select a voice and speed, and receive an audio file saved to the plugin’s temporary local directory.
VoiceMaker
VoiceMaker is another dedicated Dify TTS tool that connects a workflow to the VoiceMaker API and converts text prompts into generated speech once the API is authorized
It focuses more on voice generation rather than transcription, cloning or complex audio production.
It is therefore suitable for basic automated narration and voice-generation workflows where you just need to convert workflow text into audio.
Doubao TTS
The Doubao TTS tool connects Dify to ByteDance’s Doubao TTS API. After configuring the required App ID, API key and cluster information, the workflow can convert text into MP3 or return raw JSON data.
You can generate the script, send the text to Doubao, then use the resulting audio or returned data in subsequent workflow steps.
OpenAI-Compatible TTS Providers
Dify also supports Text to Speech through its OpenAI-API-compatible provider.
If a TTS service exposes an appropriate OpenAI-compatible interface, its model can potentially be configured through this provider using the model name, API key and API base URL.
This approach is more technical than installing a dedicated TTS plugin, but it can be useful when you want to connect Dify to a compatible third-party or self-hosted service.
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