LMNT

Give your AI agent a voice with LMNT text-to-speech

Your AI agent does more than type responses. With LMNT, it speaks in lifelike, ultra-low-latency voices tailored to your brand. Clone custom voices from short audio samples, synthesize conversational speech in real time, and deliver audio experiences that feel human.

Chosen by 800+ global brands across industries

Voice synthesis powers at your command

From cloning brand voices to generating speech on the fly, your AI agent taps directly into LMNT's voice engine during live conversations.

LMNT

Use Cases

Voice AI scenarios that deliver

Real scenarios where your AI agent uses LMNT to turn text into natural speech, creating audio experiences customers remember.

Audio Responses for Accessibility

A visually impaired customer asks about your return policy. Instead of sending a wall of text, your AI Agent converts the policy explanation into natural speech using LMNT's synthesis API and delivers an audio message. The customer hears the information clearly, and your business becomes more accessible without any manual effort from your team.

Branded Voice Greetings Across Channels

Your marketing team wants a consistent brand voice on WhatsApp and your website. Your AI Agent uses a cloned brand voice in LMNT to generate personalized audio greetings for each visitor. Every customer hears the same warm, on-brand welcome, and your team never records a single audio file manually.

Multilingual Product Descriptions Read Aloud

An international shopper browses your catalog and asks to hear a product description. Your AI Agent pulls the product details, translates if needed, and sends the text to LMNT for speech synthesis with a conversational tone enabled. The shopper gets an engaging audio walkthrough that builds confidence and reduces purchase hesitation.

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FAQs

Frequently Asked Questions

How does the AI agent generate speech from text using LMNT?

The agent sends text and a voice ID to LMNT's synthesize speech endpoint. LMNT returns high-fidelity audio in milliseconds. You can enable conversational mode for natural-sounding dialogue or use standard synthesis for formal content. The audio is delivered directly within the customer conversation.

Can I clone my company's spokesperson voice with LMNT through Tars?

Yes. Upload a short audio sample through the agent, and LMNT creates an instant voice clone. For higher fidelity, provide around five minutes of clean audio. The cloned voice becomes available in your LMNT account for all future synthesis requests from the agent.

What audio quality and latency should I expect from LMNT synthesis?

LMNT is built for ultra-low latency, delivering streaming audio fast enough for real-time conversations. The output quality matches professional voice-over standards. For noisy source audio during voice cloning, LMNT offers an enhance option that processes the recording to improve clarity.

Does Tars store the audio files generated by LMNT?

No. Audio is generated on the fly by LMNT and delivered to the customer during the conversation. Tars does not maintain a persistent cache of synthesized audio files. Each request produces fresh output based on the current text and voice selection.

Can I use both LMNT system voices and my custom clones?

Absolutely. The agent can list all available voices, filtering by owner type: system voices provided by LMNT, your custom clones, or all voices combined. You can star your favorites for quick access and assign different voices to different conversation types.

How is using LMNT through Tars different from calling the LMNT API directly?

When used through Tars, voice synthesis happens contextually during customer conversations. The agent decides when speech is appropriate, selects the right voice, and delivers audio seamlessly. You skip building the orchestration layer and focus on the customer experience instead of API plumbing.

What happens if I reach my LMNT API rate limit during a busy period?

The agent handles rate limit responses gracefully. If LMNT returns a limit error, the agent falls back to text-based responses and retries speech synthesis when capacity is available. Your customers still get answers without interruption.

Can the agent update or delete voices in my LMNT account automatically?

Yes. The agent can rename voices, update descriptions, change gender tags, unfreeze voices to upgrade them to the latest LMNT model, and delete voices that are no longer needed. All voice management actions happen through authenticated API calls using your LMNT key.

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Supercharge your AI Agent with Tool Integrations

Don't limit your AI Agent to basic conversations. Watch how to configure and add powerful tools making your agent smarter and more functional.

Privacy & Security

We’ll never let you lose sleep over privacy and security concerns

At Tars, we take privacy and security very seriously. We are compliant with GDPR, ISO, SOC 2, and HIPAA.

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