10 Best AI Voice Bots for Sales & Productivity in 2025

AI-powered voice bots are becoming incredibly popular as more businesses are looking to implement these solutions in 2025 to automate customer interactions. And they aren’t just great for automating your customer service and support operations. Some of the most advanced AI voice bots can be effectively used for sales purposes as well. They can engage with inbound leads, handle cold calls, initiate sales conversations, automate the initial lead qualification and follow-ups, and ultimately help you streamline your sales processes.

In this article, we’ll take a closer look at what AI voice bots are and how they can boost your sales and team productivity. On top of that, we’ll provide a quick overview of the top 10 best AI voice bot solutions for sales that are worth your attention in 2025

What are Voice Bots?

So, what exactly are voice bots? Voice bots (also known as AI voice agents or AI voice assistants) are AI-powered software systems that can understand spoken language and engage with users in a natural, human-like dialogue. They are able to do that by leveraging technologies like:

• Automatic Speech Recognition (ASR)
• Natural Language Processing (NLP)
• Natural Language Understanding (NLU)
• Natural Language Generation (NLG)
• Text-to-speech (TTS) Synthesis
• Machine Learning (ML)

These solutions are truly transforming the way businesses interact with their customers and prospects. No wonder the market is booming. In fact, according to the Voicebots Market Report by IndustryARC, the global voicebots market size is estimated to reach $98.2 billion by 2027, growing at a CAGR of 18.6% during the forecast period 2022-2027.

But not all AI voice bots are actually suitable for sales purposes. Some can only answer inbound calls and handle basic customer support interactions. If you’re looking for a voice bot to enhance your sales processes, you’ll benefit most from a voice bot solution that can initiate and handle outbound calls, too – and these are often referred to as AI calling systems or AI calling bots.

How Can AI Voice Bots Help Increase Sales and Team Productivity?

So, how can AI-powered voice bots increase your sales team’s productivity and help you accelerate your sales processes? By simply automating a range of tasks and operations that were previously done manually and freeing your sales reps to focus more on building relationships with prospects and closing deals. Overall, here’s what today’s AI voice agents/ voice calling bots are capable of in the context of sales:

• 24/7 lead engagement: AI voice bots can answer your inbound calls and engage inbound leads automatically. Unlike your human sales reps, they can operate around the clock, ensuring no sales opportunity slips through the cracks.
• AI cold calling: Cold calling has always been challenging and extremely time-consuming for sales agents. AI calling bots can handle outbound cold calls independently, so your reps don’t have to spend time interacting with cold prospects who aren’t likely to convert.
• Automated lead qualification: AI-powered voice bots can automate the entire process of lead qualification. They can ask your prospects a set of pre-qualification questions, filter out unqualified ones, and ensure your sales agents only interact with high-potential leads.
• Personalized upselling/ cross-selling: AI voice bots can personalize each interaction based on context and previous engagements and help you increase sales by offering highly personalized product recommendations.
• Appointment scheduling: When integrated with calendar software systems, AI voice bots can help your clients or prospects schedule appointments/ book demo calls, saving your sales reps a bunch of time and effort.
• Follow-ups and reminders: Voice bots can reach out to your prospects or customers proactively and automate follow-up interactions. For example, they can remind them of upcoming appointments/ meetings to help you reduce no-shows.

Top 10 AI Voice Bot Solutions Worth Your Attention in 2025

1. VoiceSpin

VoiceSpin’s conversational AI voice bot can answer inbound calls and initiate outbound calls so you can reach out to your prospects proactively. It can qualify your leads based on your criteria through a set of targeted questions, filter out unqualified ones, and automatically create new lead records in your integrated CRM for those prospects who show interest and meet your qualification criteria. Plus, it can help you automate the process of scheduling appointments and demo calls.

Key features:

• Multilingual capabilities
• Seamless transition to human agents
• Automated lead capture and qualification
• Integrations with third-party systems

2. Convin

Convin offers an enterprise-grade AI voice bot that can handle both inbound and outbound calls independently and engage with your customers and prospects in multiple languages, making it a solid solution for lead generation and sales purposes. Convin’s AI voice bot can help you qualify leads by assessing their intent and prioritizing high-value opportunities – and it can automatically transfer the call to a live rep when the lead shows interest. Additionally, the bot can schedule appointments and automate follow-ups with personalized calls.

Key features:

• Multiple language support
• Seamless handoff to a live agent
• Automated entity extraction, CRM updates, and follow-ups
• AI conversation summarization

3. Synthflow

With Synthflow’s AI voice bot, you can automate both inbound and outbound calls. You can either create your AI voice bot from scratch or pick a ready-made template and adapt it to your needs with custom prompts. You can also choose a language and a voice or even clone your own voice. The bot can qualify your leads, book meetings, and perform other actions. What’s great about Synthflow is that it offers 200+ integrations and APIs, so you can easily connect it to your existing tech stack.

Key features:

• Support for 20+ languages
• Ready-made templates
• Native and custom integrations
• Security and compliance features

4. Regal

Regal’s AI phone agent can automatically handle your inbound calls, qualify your leads, schedule appointments, and make outbound phone calls. It speaks multiple languages, can be customized for your brand voice, and escalates to human agents when needed. What’s distinctive about Regal is that it offers robust compliance features (including HIPAA and SOC2), making it a suitable solution for highly regulated industries like finance, legal, and healthcare.

Key features:

• Support for over 20 languages
• Automated QA scorecards
• 40+ native integrations with third-party tools
• Industry-specific compliance features

5. Tovie

An AI-powered voice bot from Tovie can handle both inbound and outbound interactions with your customers or prospects. The bot is easily adaptable to call centers of all sizes and operational volumes, which makes it suitable for both small teams and large enterprises with 10,000+ agents. You can use it for appointment scheduling automation, promotional campaigns, loyalty program updates, debt collection, and other use cases.

Key features:

• Multi-language support
• 200+ simultaneous dialed calls
• Integrations with third-party systems
• Continuous learning from past interactions

6. Chatsimple

Unlike other voice bot solutions listed here, Chatsimple’s voice AI agent works in a different way. It literally calls your website visitors while they are browsing your site and engages them proactively. It supports multiple languages and offers a range of male and female voices to choose from. Chatsimple’s AI agent improves user engagement, captures inbound leads, collects lead details, qualifies leads, and helps you improve website conversions through personalized recommendations.

Key features:

• Support for 175+ languages
• Customized to match your brand voice
• Security and compliance features
• Integrations with CRM and third-party apps

7. VoiceGenie

VoiceGenie is a gen AI-powered voice bot that is specifically built for sale purposes. It can call your prospects, provide relevant information about your products or services, qualify leads based on their buying intent, identify cross-selling and upselling opportunities during interactions to offer tailored deals, and schedule appointments. VoiceGenie can also answer your inbound calls and process inbound leads. You can try all the features by signing up for a 7-day free trial.

Key features:

• Unlimited outbound campaigns
• Seamless human agent handover
• Support for 100+ languages
• Sentiment analysis

8. Cognigy

Cognigy’s voice AI agent can be effectively used in sales and customer service environments. The bot can interact with your prospects and customers in their preferred language and supports 1000+ synthetic voices. With deep integrations with the leading contact center providers and other third-party systems and the ability to support 25K+ concurrent conversations, Cognigy’s AI agents are best-suited for large-scale businesses and enterprises.

Key features:

• Support for 100+ languages
• Seamless call routing to human agents
• Integrations with third-party apps
• Extensive training materials

9. Floatbot

With Floatbot, you can either choose its VoiceGPT or integrate your own LLM. Floatbot’s AI-powered voice bot can help your customers or prospects schedule appointments or reservations. It can also send automated reminders to reduce no-shows, qualify leads by asking relevant questions and capturing lead information, and provide personalized product recommendations based on customer preferences. Plus, the bot can seamlessly transition between voice, chat, and text/ SMS channels.

Key features:

• No-code/ low-code voice bot builders
• Bot interruption management
• Support for 150+ languages
• Third-party integrations

10. JustCall

JustCall’s AI voice agent can only handle inbound calls but it can still be effectively used for sales purposes. Apart from resolving customer service queries, the bot can pitch your products or services, qualify inbound leads, capture lead information, and book appointments automatically, thanks to Google Calendar integration. It speaks multiple languages and can transfer complex queries to your human reps when needed.

Key features:

• Smooth transfer to a live agent
• Support for multiple languages
• Automated callback handling
• Integrations with CRM systems

Wrapping up

AI-powered voice bots can take your sales strategy to the next level by automating cold calls, lead qualification, appointment scheduling, product recommendations, and follow-up interactions. They won’t entirely replace your sales team – but they can actually make your sales reps tons more efficient and productive by ensuring they spend their time more strategically. By letting voice bots handle calls, qualify leads, and schedule appointments automatically, your sales reps can focus on interacting with high-potential prospects, building relationships, and hitting their sales targets faster. If you’ve been thinking about implementing an AI voice bot – now is truly the best time.