If you’re ready to take advantage of synthetic voice, you’re not alone. Teams are turning to it to provide quicker customer support, create more engaging content, improve accessibility features, and much more.
Behind the scenes, most advanced voice deployments rely on three best AI voice generation software solutions: ElevenLabs, PlayHT, and OpenAI.
Some companies already know these solutions inside out: they’ve built the processes, safety measures, and quality checks needed to smoothly integrate them into your workflows and make them work correctly.
In this article, we emphasize the top synthetic voice generation companies using ElevenLabs, PlayHT, or OpenAI for synthetic voice projects, so you can go from idea to live setup with less trial and error.
Best Synthetic Voice Generation Companies
Impekable is one of the best synthetic voice generation companies in San Francisco. They’ve completed over 600 projects for different companies, including Google, Accenture, Adobe, and Nike, across multiple industries such as Retail, Insurance, Finance, Manufacturing, and more.
Impekable is a certified partner of ElevenLabs. This means they’re experts at using these tools to add realistic, multilingual speech to apps and workflows. The company takes care of all the complex work, like custom ElevenLabs’ API integration and connection with phone systems like Twilio or Amazon Connect, making sure responses are accurate and testing the setup after launch. You can expect a clear plan for your voice customer experience, quick prototypes, smooth integration ready for production, global deployment, and ongoing support.
- Services and expertise: AI development, app modernization, product strategy, customer experience & product development
- Location: San Francisco, San Jose, US; Sydney, Australia
- Team size: Up to 49 experts
- Portfolio: Twilio, Zingbox, Pentair, and others
Scale My Publication is here to support digital publishers like bloggers, online magazines, and newsrooms in growing their audience. They offer both on-demand services as well as a full-service news publication platform that’s customized to fit each client.
It’s one of the companies using PlayHT and can integrate it into your website so readers can listen to articles wherever they are. You can choose from ready-made voices or create your own branded voices for a truly unique sound. In addition, you can turn to Scale My Publication for social media content creation, link building, and more.
- Services and expertise: Social media content creation, Google news submission, text-to-speech software integration, AI schema generator integration, website optimization with GTmetrix, optimized web hosting, custom news publication development
- Location: Dover, US
- Team size: Up to 49 experts
- Portfolio: Her Forward, and others
DigitalSuits has over eight years of experience in software development and, during this time, has delivered more than 100 projects. The company assists brands in leveraging the OpenAI text-to-speech API for high-quality voice synthesis. They customize and fine-tune Whisper for each specific use case, simplify workflows, and help control costs so you get reliable results without overspending.
DigitalSuits works with a wide range of industries, such as Real Estate, Healthcare, eCommerce, Media, Education, Event Management, Legal Services, HR, and Manufacturing. You can choose from several engagement options: consulting, dedicated teams, outstaffing, or the time-and-material model.
- Services and expertise: Shopify development, eCommerce development, AI development, software development, IT consulting, IT outstaffing
- Location: Miami, New York, US; London, UK; Tallinn, Estonia
- Team size: 50+ specialists
- Portfolio: ReturnGo, Crossing Minds, Eurora, and others
Sparkout Tech is a software and AI engineering company with over seven years of experience and more than 150 clients around the world. They focus on voice tech, particularly ElevenLabs, and create advanced audio workflows like text-to-speech, voice cloning, real-time AI voice generation, and voice changers.
Their AI agent development service takes you from the initial discovery and planning stages all the way through API integration, deployment, and ongoing support after launch. By making full use of ElevenLabs’ APIs, Sparkout fine-tunes aspects like pitch, speed, tone, and emotion to build unique brand voice profiles, support multiple languages, and keep latency and costs under control.
- Services and expertise: ElevenLabs development, AI development, AI chatbot development, AI app development, enterprise AI voice solutions, AI consulting, custom software development, mobile app development, DevOps, QA and testing, spatial computing (AR/VR/MR)
- Location: Ganapathy, Coimbatore, India; Dover, Kent, US
- Team size: 100+ experts
- Portfolio: Parkk, DeepLens, Farmsent, and others
EvinceDev is a software and AI engineering partner that helps teams use OpenAI’s tools at scale. They have already completed over 1,200 projects in 28+ countries. Their voice solutions primarily work with OpenAI’s Whisper and GPT-4.
EvinceDev employs Whisper for quick, accurate transcription, multilingual speech processing, and voice commands, letting users search, navigate, and complete tasks through speech. They can easily integrate speech-to-text features into your existing apps, websites, CRMs, and enterprise systems. The company prioritizes security and compliance, following strict data privacy practices and safe-use guidelines to ensure deployments are both scalable and responsible.
- Services and expertise: AI & IoT solutions, product development, mobile app development, UI/UX design, digital marketing, custom software development, full-stack development, eCommerce development, CMS development, IT consultation
- Location: East Brunswick, US
- Team size: 200+ team members
- Portfolio: Sommos, Ministry of Interior, Alive Podcast Network, and others
Flowmondo is one of the top synthetic voice generation companies in London. It’s a no-code integration and automation studio with the mission of “making digital transformation as easy as ordering pizza.” They have 13+ years in AI automation and 2,100+ projects delivered. It’s one of the companies using ElevenLabs.
Flowmondo integrates ElevenLabs’ voice capabilities into your existing systems to create lively, personalized audio, like automated voice responses, real-time narration, and custom audio interactions, without needing heavy engineering. They start by understanding how your team actually works, then design custom workflows that go beyond the standard options and connect to nearly anything in your tech stack.
- Services and expertise: Software integration, process automation, AI integration, data management, document automation, no-code development
- Location: London, UK
- Team size: Up to 49 experts
- Portfolio: Cyprus Villa Retreats, Away We Go, BB7, and others
Sunflower Lab is a go-to team focused on AI-driven consulting and engineering. They can help you add an “AI teammate” to your organization in roughly four weeks, defining the role, estimating potential benefits, and quickly delivering a working agent.
Sunflower Lab uses PlayHT for voice projects but also has a versatile toolkit for a variety of needs: Vapi, BLAND.ai, Symbl.ai, Twilio, Replicate, n8n, Relevance AI, and much more. The company is trusted by over 200 clients from more than 30 industries, and for a good reason: they prioritize security with encryption, data masking, and strict governance.
- Services and expertise: AI voice agent development, agentic AI automation, Data Brick consulting & Integration, Delta Lake development, product discovery, UI/UX design, web app development, mobile app development
- Location: Columbus, Somerset, US; Gujarat, India
- Team size: 150+ team members
- Portfolio: Residential Real Estate Council, Ahoy!, Peerzle, and others
MMC Global is one of the AI and software consulting companies using OpenAI voice tech. Their work with OpenAI covers GPT-4, ChatGPT, DALL·E, and Whisper, providing quick API-based integrations.
Specifically for voice, MMC Global uses Whisper for accurate speech-to-text, which powers transcription, multi-language processing, and voice commands. They also provide testing ans validation services to make sure your AI-powered app is highly accurate and brings the results you expect.
- Services and expertise: AI chatbot development, computer vision, predictive analytics, robotic process automation, web development, mobile app development, IoT development, blockchain development, IT consulting, software quality assurance
- Location: Austin, US; Dubai, UAE; London, UK
- Team size: Up to 999 employees
- Portfolio: Tarot Tap, Revme, AOK, and others
Tagline Infotech is a custom software provider with more than seven years of experience, having completed over 650 projects across 45+ countries. Their team develops personalized AI agents and voice experiences from start to finish.
When it comes to synthetic voices, they mostly rely on PlayHT and ElevenLabs. Tagline can integrate these tools into your existing systems, also connecting telephony services like Twilio and Amazon Connect, along with platforms like VAPI, SynthFlow, Retell, and Dialogflow. If you require hands-on support, their AI agent developers can help you design, implement, and refine the entire solution.
- Services and expertise: AI agent development, app management and modernization, software product engineering, IT consulting, software outsourcing
- Location: Surat, Ahmedabad, India; Leander, US; Wallington, London, UK; Dubai, UAE
- Team size: 170+ professionals
- Portfolio: Fintwit, Greena World, Synthu, and others
Fifty One Degrees specializes in building practical conversational AI agents for real business needs. Their mission is to assist companies with improving customer service, supporting employees, and increasing productivity.
They mostly use ElevenLabs for voice work to automate incoming and outgoing calls and ensure the conversations sound natural and on-brand. Each project is customized for the client, built on a scalable voice AI architecture, and delivered quickly. A human-in-the-loop approach ensures quality, as experts review complex interactions, tweak flows, and help the system continue to learn.
- Services and expertise: AI agent development, conversational AI development, AI consulting
- Location: London, UK; New York, US
- Team size: Up to 10 experts
- Portfolio: Phoenix, Heatable, 4most, and others
Conclusion
Creating an AI-generated voice for businesses that integrates smoothly into your existing tools, stays compliant, and pays for itself over time can be challenging.
Technical implementation is only half of the story. A successful deployment must begin with clear business goals: which customer journeys you want to improve, what a good experience sounds like, how you’ll measure success (like fewer support tickets, quicker resolutions, higher satisfaction scores), and what safety measures you need to build trust.
That’s why choosing the right partner matters. Your potential team shouldn’t just connect APIs—they should design workflows, create policies, conduct quality checks, and monitor costs and latency. Use this list to find a partner who truly understands both the synthetic voice technology and your business needs.
If you want to feature your company leveraging ElevenLabs, PlayHT, and OpenAI for synthetic voice systems on this list, email us or submit a form in the Top Choices section. After a thorough assessment, we’ll decide whether it’s a valuable addition.
