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Hermes Feature Guides · Part 18/9/2026

Text-to-Speech — AI Speaks

Text-to-Speech — AI Speaks — easy-to-understand guide based on official docs

Remember the first time your phone’s navigation calmly said, “Turn right in 300 meters”? That gentle voice isn’t magic — it’s Text-to-Speech (TTS), the technology that turns written words into spoken ones. Today, we’re flipping the switch and making Hermes Agent talk back to you.

Why Bother Making AI Speak?

Picture this: your hands are covered in flour while baking, but you want to hear today’s headlines. Or you’re driving, eyes glued to the road, yet need to catch up on messages. TTS makes these moments effortless. It’s not just about reading text aloud — you can pick different voices, tones, and even emotions, making the AI sound less robotic and more like a helpful companion.

Step 1: Set Up Your Voice Engine

Getting Hermes Agent to talk is surprisingly simple. Open your configuration file and locate the tts section:

tts:
  provider: "edge"                 # Choose your speech engine
  edge:
    voice: "en-US-AriaNeural"      # Pick a voice

Two choices matter here:

  • provider: Which speech service you want (free or paid)
  • voice: The specific voice you prefer (Edge alone offers 322 voices across 74 languages)

Step 2: From Free to Professional — Pick Your Engine

Hermes Agent supports several speech engines, like choosing between different speaker brands:

Engine Strength Best For
edge Completely free, many voices Beginners, daily use
elevenlabs Most realistic voices High-quality podcasts
openai Supports emotion instructions Nuanced emotional delivery
piper Runs locally, privacy-friendly Offline use

My advice? Start with edge — zero cost, decent quality. Think of it as learning to ride a regular bicycle before buying a racing bike.

Step 3: Advanced Trick — Make AI Speak with Feeling

If you choose the OpenAI engine, you can add a director’s touch:

openai:
  model: "gpt-4o-mini-tts"
  voice: "alloy"                 # Options: alloy, echo, fable, etc.
  # You can temporarily set the tone per request
  # Example: instructions: "Speak in a gentle tone, slow down"

This means you can say, “Read this sports news with excitement,” and the AI will genuinely sound excited! It’s like giving an actor a script — you set the emotion, they deliver the performance.

My Practical Tips

  1. Try free edge first — it handles most scenarios well; don’t rush to spend money
  2. Mind voice licensing — if you plan commercial use (like videos), check the rights for your chosen voice
  3. Match voice to context — use a steady voice for news, a lively one for children’s stories

Wrapping Up

Text-to-Speech upgrades Hermes Agent from “typing replies” to “speaking conversations.” Configuration takes just minutes, but the experience boost is massive. Whether you’re building a personal assistant, an audiobook, or just making your app friendlier, TTS is the magic switch that brings AI to life.

Now go ahead — have the AI read you an interesting article. You’ll discover that technology can truly make life sound better.

📖 Official Docs

This article is based on the official Hermes Agent documentation:Official docs › user-guide/subagent-delegation