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.

How to add Tools to your AI Agent

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.

Real results, real customers, real stories

“We're saving an average of 4,000+ calls a month.”
Implementing an Agent revolutionized our customer service channels and our service to Indiana business owners. We're saving an average of 4,000+ calls a month and can now provide 24x7x365 customer service️ along with our business services.
Lindsey Roark Mayes
Ex-Director of SOS IT (State of Indiana)
“Cutting down on staff needing to email back.”
Since our launch of Tars Agents, we've had more than 5k interactions with them from individuals on the website. We saw prospects interacting with the Agent regarding application timelines, tuition, curriculum, and other items that may come through an email. This provides another avenue of access to our team while cutting down on staff needing to email back.
Levi Eastwood
Marketing Director of UCI Merage School
“Powerful tool - and there's so much more still to explore!”
I love the flexibility of the TARS chatbot design tool. The ability to drop in a new gambit and easily de-link and re-link gambits before and after it saves HOURS of time lost if I had to regenerate from scratch. TARS stands out for its flexibility, consistent performance, and outstanding support.
Aaron Rittmaster
Founder
“I like the product.”
Takes those boring forms and allows you to make the collecting of customer information enjoyable for the user. It has a lot of value and I see the company constantly working on improving it.
Pierre Rattini
Director of Marketing
“Very responsive and supportive Team”
I love how supportive and responsive the team members are. The chatbots are not difficult to build once you have an idea of what you are doing, and this is so based on the backend work Tars has completed. Also, they are flexible to the clients' requests.
Keisha Cameron
Product Manager
“Easy for cooperation and open to agreement.”
One of the biggest qualities of TARS is their ability to truly understand their clients' needs. They took the time to thoroughly assess our requirements, offering valuable insights and recommendations that we hadn't even considered. This level of personalized attention made a significant difference in the success of our project.
Milica Petrovic
Customer Care Project Associate
“Great service”
The guys at Tars are so passionate about bots and maximum engagement. Tars is overall a great product with really nice people there to help me engage and automate conversations I would have otherwise missed.
Nigel Gosling
Health Coach
“Best in class for lead generation”
TARS is an essential tool within our lead gen strategy. I started to use it a couple years ago, and the platform evolved to focus on results. You can integrate your Google Analytics, Facebook Pixel, and AdWords conversion tag to track results and measure your campaign. You can also integrate with Zapier, which opens a lot of possibilities. Compared with static landing pages, we have seen an increase in conversions and more engagement.
Leonardo Wolff
Founder
“Very professional and cooperative”
Building an automated chat that our customers actually used and reduced calls amount.
Maryam Alhaddad
Customer Journey Designer
“Flexibility and good service”
Tars platform is very flexible, so you can do pretty much any flux you desire. Also integrates with any third party through APIs with a very simple and easy-to-use interface. Also tars team is great! Always at disposal and brings suggestions and solutions for any issue encountered during the process of building the chatbot.
Lucas Von Lachmann
Process Manager
“Deserved The title of the Best Chatbot of the Year”
If you are building chatbots, you cannot go wrong with TARS. I have been with this company since their beginning. Seen how they have grown. I have tested a lot of bots, but this one is still the best out there. We use WhatsApp a lot for our business. And what I like best is that I can have 1 chatbot for website and for my WhatsApp. I especially appreciate their support team as well. Whenever I am stuck, they quickly reply to my questions.
MJ Felix
Chairman
“Advanced integration, easy to use, and very customizable.”
This chatbot does everything from AI integration to complete customization and is excellent for lead conversion in most industries. I think the pre-formatted templates are an excellent boost to get started quickly. The team is also excellent.
Rachel Rowling
Chief Operating Officer
“The chatbot implementation has exceeded expectations!”
The implementation has delivered 24/7 customer support and is proving its value by reducing Contact center calls by around 5% in just four months of operation. Beyond enhancing the e-care experience, the chatbot is driving impressive business results, achieving a remarkable 20% month-on-month growth.
Victor Pereira
Customer Care and CX Manager
“We're saving an average of 4,000+ calls a month.”
Implementing an Agent revolutionized our customer service channels and our service to Indiana business owners. We're saving an average of 4,000+ calls a month and can now provide 24x7x365 customer service️ along with our business services.
Lindsey Roark Mayes
Ex-Director of SOS IT (State of Indiana)
“Cutting down on staff needing to email back.”
Since our launch of Tars Agents, we've had more than 5k interactions with them from individuals on the website. We saw prospects interacting with the Agent regarding application timelines, tuition, curriculum, and other items that may come through an email. This provides another avenue of access to our team while cutting down on staff needing to email back.
Levi Eastwood
Marketing Director of UCI Merage School
“Powerful tool - and there's so much more still to explore!”
I love the flexibility of the TARS chatbot design tool. The ability to drop in a new gambit and easily de-link and re-link gambits before and after it saves HOURS of time lost if I had to regenerate from scratch. TARS stands out for its flexibility, consistent performance, and outstanding support.
Aaron Rittmaster
Founder
“I like the product.”
Takes those boring forms and allows you to make the collecting of customer information enjoyable for the user. It has a lot of value and I see the company constantly working on improving it.
Pierre Rattini
Director of Marketing
“Very responsive and supportive Team”
I love how supportive and responsive the team members are. The chatbots are not difficult to build once you have an idea of what you are doing, and this is so based on the backend work Tars has completed. Also, they are flexible to the clients' requests.
Keisha Cameron
Product Manager
“Easy for cooperation and open to agreement.”
One of the biggest qualities of TARS is their ability to truly understand their clients' needs. They took the time to thoroughly assess our requirements, offering valuable insights and recommendations that we hadn't even considered. This level of personalized attention made a significant difference in the success of our project.
Milica Petrovic
Customer Care Project Associate
“Great service”
The guys at Tars are so passionate about bots and maximum engagement. Tars is overall a great product with really nice people there to help me engage and automate conversations I would have otherwise missed.
Nigel Gosling
Health Coach
“Best in class for lead generation”
TARS is an essential tool within our lead gen strategy. I started to use it a couple years ago, and the platform evolved to focus on results. You can integrate your Google Analytics, Facebook Pixel, and AdWords conversion tag to track results and measure your campaign. You can also integrate with Zapier, which opens a lot of possibilities. Compared with static landing pages, we have seen an increase in conversions and more engagement.
Leonardo Wolff
Founder
“Very professional and cooperative”
Building an automated chat that our customers actually used and reduced calls amount.
Maryam Alhaddad
Customer Journey Designer
“Flexibility and good service”
Tars platform is very flexible, so you can do pretty much any flux you desire. Also integrates with any third party through APIs with a very simple and easy-to-use interface. Also tars team is great! Always at disposal and brings suggestions and solutions for any issue encountered during the process of building the chatbot.
Lucas Von Lachmann
Process Manager
“Deserved The title of the Best Chatbot of the Year”
If you are building chatbots, you cannot go wrong with TARS. I have been with this company since their beginning. Seen how they have grown. I have tested a lot of bots, but this one is still the best out there. We use WhatsApp a lot for our business. And what I like best is that I can have 1 chatbot for website and for my WhatsApp. I especially appreciate their support team as well. Whenever I am stuck, they quickly reply to my questions.
MJ Felix
Chairman
“Advanced integration, easy to use, and very customizable.”
This chatbot does everything from AI integration to complete customization and is excellent for lead conversion in most industries. I think the pre-formatted templates are an excellent boost to get started quickly. The team is also excellent.
Rachel Rowling
Chief Operating Officer
“The chatbot implementation has exceeded expectations!”
The implementation has delivered 24/7 customer support and is proving its value by reducing Contact center calls by around 5% in just four months of operation. Beyond enhancing the e-care experience, the chatbot is driving impressive business results, achieving a remarkable 20% month-on-month growth.
Victor Pereira
Customer Care and CX Manager

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.

GDPR
ISO
SOC 2
HIPAA

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