# Top Free AI Voice Assistants Across AI Voice Assistants, "free" works in three different ways. Free forever means no expiry and no credit card required, usable within the limits that apply. Freemium means genuinely free up to a cap before a paid plan kicks in. Trial means full access for a limited window before paid plans begin. - **Retell AI (freemium):** $10 in free credits on sign-up, covering roughly 67 to 90 minutes of testing; full platform access with no feature gating before credits run out - **Synthflow (free trial):** Full platform access including voice agent builder, inbound and outbound automation, and integrations - **ElevenLabs (freemium):** 10,000 credits per month, covering roughly 10 minutes of Multilingual TTS or 20 minutes of Flash; no commercial license on the free tier - **Deepgram (freemium):** $200 in credits on sign-up with no credit card required, covering speech-to-text, text-to-speech, and voice agent API calls - **Jotform AI Agents (freemium):** Up to 5 agents and 100 conversations per month, with access to the agent builder, voice, and form automation features - **CallRail (free trial):** 14 days with full access to call tracking, attribution, AI conversation transcription, and lead engagement tools - **800.com (free trial):** Full access including vanity number setup, call recording, routing, and attribution reporting - **Voiceflow (freemium):** 100 credits per month on the free sandbox for prototyping chat and voice agents; 7-day full-feature trial on paid plans with no credit card required - **Genesys Cloud CX (free trial):** Full platform access including AI routing, voice, digital channels, and analytics - **Thoughtly (free trial):** Full access to build and test AI voice agents for outbound sequences and pipeline activation - **JustCall (free trial):** Full access to calling, SMS, WhatsApp, AI transcription, and CRM integrations - **smallest.ai (freemium):** Pay-as-you-go access to TTS, STT, and voice agent APIs with no monthly minimum; rates start at ~$0.003/min for speech-to-text - **Ringg AI (free trial):** Full access to build and deploy conversational voice agents across voice and WhatsApp channels - **Nextiva (free trial):** Full access to voice, digital channels, AI tools, and analytics - **Aircall (free trial):** Full access to calling, SMS, AI transcription, call coaching, and CRM sync If you'd like to see more products and to evaluate additional feature options, compare all [AI Voice Assistants](https://www.g2.com/categories/ai-voice-assistants) to ensure you get the right product. ## View Free AI Voice Assistants G2 takes pride in showing unbiased reviews on user satisfaction in our ratings and reports. We do not allow paid placements in any of our ratings, rankings, or reports. Learn about our [scoring methodologies](https://research.g2.com/g2-scoring-methodologies). **104** AI Voice Assistants Products Available View all [AI Voice Assistants](https://www.g2.com/categories/ai-voice-assistants) View all [AI Voice Assistants](https://www.g2.com/categories/ai-voice-assistants) ### [Retell AI](https://www.g2.com/products/retell-ai/reviews) [By Retell AI](https://www.g2.com/sellers/retell-ai) [ (2,640)4.8 out of 5 ](https://www.g2.com/products/retell-ai/reviews#reviews "Read Retell AI Reviews") Product Description Retell AI is a powerful conversational AI platform designed to automate voice, SMS, and chat interactions with natural, humanlike performance. Built on top of your choice of large language models (LLM **Users:** Founder, CEO · **Industries:** Information Technology and Services, Computer Software · **Market Segment:** 3% Small-Business, 0% Mid-Market User SentimentHow are these determined? Reviewers frequently mention the natural-sounding voice agents, the platform's ease of use and customization, its seamless integration with other systems, and the ability to test and iterate on voice agents. Users mentioned some issues such as the need for more built-in templates, easier CRM/calendar integrations, the platform's cost depending on call volume, and the learning curve associated with fine-tuning the platform for specific use cases. Year Founded 2023 HQ Location Palo Alto, US Company Website https://www.retellai.com Twitter @retellai LinkedIn® Page https://www.linkedin.com/company/retellai/ ### [Synthflow](https://www.g2.com/products/synthflow/reviews) [By AgentFlow AI GmbH](https://www.g2.com/sellers/agentflow-ai-gmbh) [ (1,015)4.5 out of 5 ](https://www.g2.com/products/synthflow/reviews#reviews "Read Synthflow Reviews") Product Description Synthflow provides enterprise-ready voice AI agents that automate inbound and outbound phone calls. Businesses use Synthflow to handle appointment scheduling, lead qualification, customer support, and **Users:** CEO, Founder · **Industries:** Marketing and Advertising, Information Technology and Services · **Market Segment:** 92% Small-Business, 7% Mid-Market User SentimentHow are these determined? Users frequently mention the intuitive interface, quick agent configuration, natural voice quality, and robust integration options as key benefits, along with the platform's ability to reduce team size and improve efficiency in outbound calling strategies. Users reported difficulties in fully testing voice interactions without upgrading, limited access to real call testing in the free plan, and challenges with certain integrations, such as HubSpot CRM, as well as issues with the complexity of the initial setup and customer support. Year Founded 2023 HQ Location Berlin, DE Company Website https://synthflow.ai/pricing LinkedIn® Page https://www.linkedin.com/company/synthflowai/ [![G2 Advertising](/assets/my-g2-logo-41632af6f81a240a0a9886638f412b2ac9a29f4001534f8c83be89a58ef9d45d.svg "G2 Advertising")](https://sell.g2.com/case-studies/how-aisdr-uses-g2-ads-to-turn-g2-into-top-5-traffic-source) Sponsored G2 Advertising Get 2x conversion than Google Ads with G2 Advertising! G2 Advertising places your product in premium positions on high-traffic pages and on targeted competitor pages to reach buyers at key comparison moments. [ Learn More ](https://sell.g2.com/case-studies/how-aisdr-uses-g2-ads-to-turn-g2-into-top-5-traffic-source) ### [ElevenLabs](https://www.g2.com/products/elevenlabsio/reviews) [By Eleven Labs](https://www.g2.com/sellers/eleven-labs-1235fa78-9455-4719-b9e0-9bae6a18eb20) [ (1,152)4.5 out of 5 ](https://www.g2.com/products/elevenlabsio/reviews#reviews "Read ElevenLabs Reviews") Product Description ElevenLabs is the world’s most advanced generative media and voice AI company, powering creation, localization, and intelligent interaction across every medium. Built around two core platforms—Creativ **Users:** Founder, CEO · **Industries:** Marketing and Advertising, Entertainment · **Market Segment:** 73% Small-Business, 7% Mid-Market User SentimentHow are these determined? Users like the broad portfolio of tools, the realistic voice generation, the intuitive interface, and the ability to clone voices, which they find useful in various applications such as video editing, content creation, and customer service. Users reported issues with the credit system, finding the right voice tone, the high cost as usage scales, and occasional inconsistencies in voice generation, as well as difficulties in navigating the platform and finding specific features. Year Founded 2022 HQ Location New York, US Company Website https://elevenlabs.io/ LinkedIn® Page https://www.linkedin.com/company/elevenlabsio/ ### [CallRail](https://www.g2.com/products/callrail/reviews) [By CallRail](https://www.g2.com/sellers/callrail) [ (1,818)4.5 out of 5 ](https://www.g2.com/products/callrail/reviews#reviews "Read CallRail Reviews") Product Description CallRail is the lead engagement platform that makes it easy for businesses to attract more leads, convert more customers, and optimize their marketing. Serving more than 220,000 businesses worldwide, **Users:** Owner, CEO · **Industries:** Marketing and Advertising, Real Estate · **Market Segment:** 73% Small-Business, 22% Mid-Market User SentimentHow are these determined? Reviewers appreciate CallRail's simple user interface, quick setup, and unique features such as round robin call distribution, AI-driven insights, and the ability to track calls, texts, and form fills. Users experienced difficulties in finding advanced features, limitations with some integrations, occasional call delays, issues with spam calls, and a complex pricing structure that can get expensive as usage scales. Year Founded 2011 HQ Location Atlanta, GA Company Website https://www.callrail.com Twitter @CallRail LinkedIn® Page https://www.linkedin.com/company/2567008/ ### [Deepgram](https://www.g2.com/products/deepgram/reviews) [By Deepgram](https://www.g2.com/sellers/deepgram) [ (446)4.6 out of 5 ](https://www.g2.com/products/deepgram/reviews#reviews "Read Deepgram Reviews") Product Description Enterprise Voice AI platform designed for developers building voice-first products using speech-to-text, text-to-speech, or speech-to-speech APIs. Over 200,000 developers build with Deepgram's voice-n **Users:** Software Engineer, CEO · **Industries:** Computer Software, Information Technology and Services · **Market Segment:** 80% Small-Business, 19% Mid-Market User SentimentHow are these determined? Reviewers frequently mention Deepgram's high accuracy, speed, and ease of integration, with many users praising its real-time transcription capabilities and its ability to handle different accents and technical jargon. Users reported issues with Deepgram's handling of noisy environments and heavy accents, limitations in language support, and some found the documentation lacking in detail for advanced configurations. Year Founded 2015 HQ Location San Francisco, California Company Website https://deepgram.com Twitter @DeepgramAI LinkedIn® Page https://www.linkedin.com/company/deepgram/ ### [Jotform AI Agents](https://www.g2.com/products/jotform-ai-agents/reviews) [By Jotform](https://www.g2.com/sellers/jotform) [ (740)4.5 out of 5 ](https://www.g2.com/products/jotform-ai-agents/reviews#reviews "Read Jotform AI Agents Reviews") Product Description Jotform AI Agents are automated real-time assistants designed to help your users at any time of day or night. AI Agents are the future of customer service. Train and customize your own personal AI Age **Users:** Owner, CEO · **Industries:** Computer Software, Information Technology and Services · **Market Segment:** 72% Small-Business, 11% Mid-Market User SentimentHow are these determined? Reviewers frequently mention the ease of setup, the ability to personalize the AI agents, and the efficiency it brings to their businesses by automating repetitive tasks and improving customer interaction. Reviewers noted some issues with the training process, limitations in customization, occasional inaccuracies in AI responses, and challenges with certain features such as resetting chats and embedding into forms. Year Founded 2006 HQ Location San Francisco, California Company Website https://www.jotform.com/ Twitter @Jotform LinkedIn® Page https://www.linkedin.com/company/3541463/ ### [800.com](https://www.g2.com/products/800-com/reviews) [By 800.com](https://www.g2.com/sellers/800-com) [ (1,010)4.7 out of 5 ](https://www.g2.com/products/800-com/reviews#reviews "Read 800.com Reviews") Product Description Smarter call tracking, now with AI Agents that answer when you can't. Never miss a call again. 800.com helps small businesses and agencies grow smarter with 800 AI Agents: intelligent agents that an **Users:** Owner, CEO · **Industries:** Construction, Retail · **Market Segment:** 79% Small-Business, 12% Mid-Market ![Verified User in Transportation/Trucking/Railroad](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Transportation/Trucking/Railroad") UT I am really pleased with the format of your platform.[Read review](https://www.g2.com/products/800-com/reviews/800-com-review-13023562) ![Luis H.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Luis H.") LH We've been using 800.com for our business phone system, and it has been an excellent experience from day one. As a growing IT services company, we...[Read review](https://www.g2.com/products/800-com/reviews/800-com-review-13060426) Year Founded 2008 HQ Location Sarasota, Florida Company Website https://www.800.com LinkedIn® Page https://www.linkedin.com/company/800-com ### [Voiceflow](https://www.g2.com/products/voiceflow/reviews) [By Voiceflow](https://www.g2.com/sellers/voiceflow) [ (111)4.6 out of 5 ](https://www.g2.com/products/voiceflow/reviews#reviews "Read Voiceflow Reviews") Product Description Voiceflow is a AI agent platform that empowers product teams at mid-market and enterprise companies to design, deploy, and scale AI agents across chat and voice channels. Trusted by teams at StubHub, **Users:** Founder, CEO · **Industries:** Computer Software, Information Technology and Services · **Market Segment:** 60% Small-Business, 15% Mid-Market ![Heidi L.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Heidi L.") HL I like that Voiceflow significantly reduces the need for users to speak to a human by effectively troubleshooting and providing instant answers,...[Read review](https://www.g2.com/products/voiceflow/reviews/voiceflow-review-11842813) ![Harish M.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Harish M.") HM I really appreciate how Voiceflow is both extremely powerful and simple to use. The platform makes it easy to accomplish a wide array of tasks,...[Read review](https://www.g2.com/products/voiceflow/reviews/voiceflow-review-11842934) Year Founded 2019 HQ Location San Francisco, CA Company Website https://www.voiceflow.com/ LinkedIn® Page https://www.linkedin.com/company/voiceflowhq/ ### [Genesys Cloud CX](https://www.g2.com/products/genesys-cloud-cx/reviews) [By Genesys](https://www.g2.com/sellers/genesys) [ (1,556)4.4 out of 5 ](https://www.g2.com/products/genesys-cloud-cx/reviews#reviews "Read Genesys Cloud CX Reviews") Product Description Genesys Cloud CX® is an AI-Powered Experience Orchestration solution that enables organizations to coordinate customer and employee interactions across every touchpoint. By connecting data, systems an **Users:** Case Advocate, Manager · **Industries:** Information Technology and Services, Financial Services · **Market Segment:** 45% Mid-Market, 40% Enterprise User SentimentHow are these determined? Reviewers appreciate the platform's robust open APIs, developer tools, scalability, cloud-native architecture, and the ability to quickly deploy and scale solutions, as well as its robust omnichannel capabilities, intelligent routing, and powerful analytics. Users experienced a steep learning curve for advanced features, vague information surrounding new releases, occasional errors when using newer features or adjusting configurations, and complexities in customizing reports to meet specific business requirements. Year Founded 1990 HQ Location Menlo Park, CA Company Website https://www.genesys.com Twitter @Genesys LinkedIn® Page https://www.linkedin.com/company/601919/ Phone +1 650 466 - 1100 ### [Thoughtly](https://www.g2.com/products/thoughtly/reviews) [By Thoughtly](https://www.g2.com/sellers/thoughtly) [ (42)4.6 out of 5 ](https://www.g2.com/products/thoughtly/reviews#reviews "Read Thoughtly Reviews") Product Description Thoughtly is an AI go-to-market (GTM) platform that helps businesses activate and convert their warm pipeline through voice-first automation. The platform deploys natural, human-sounding AI voice agen **Industries:** Marketing and Advertising · **Market Segment:** 114% Small-Business, 2% Mid-Market ![Newaz C.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Newaz C.") NC Thoughtly has a well thought out (pun intended) interface. Provides outbound calling for sales and inbound for customer service. Great for people...[Read review](https://www.g2.com/products/thoughtly/reviews/thoughtly-review-10654732) SS The AI voice agents lift a huge weight off my team by handling the initial outreach and qualifying prospects before they speak with a salesperson.[Read review](https://www.g2.com/products/thoughtly/reviews/thoughtly-review-12255309) Year Founded 2023 HQ Location New York City, US Company Website https://thoughtly.com Twitter @thoughtlyai LinkedIn® Page https://www.linkedin.com/company/thoughtly-ai ### [smallest.ai](https://www.g2.com/products/smallest-ai/reviews) [By Smallest AI](https://www.g2.com/sellers/smallest-ai) [ (30)4.7 out of 5 ](https://www.g2.com/products/smallest-ai/reviews#reviews "Read smallest.ai Reviews") Product Description Smallest AI — Real-Time Voice AI Platform (Text-to-Speech, Speech-to-Text, Speech-to-Speech & Voice Agents) Smallest AI is a real-time voice AI platform that provides low-latency text-to-speech ( **Market Segment:** 53% Mid-Market, 43% Small-Business User SentimentHow are these determined? Users frequently mention the impressive language coverage, the ability to handle high call volumes without accuracy dropping, and the valuable automatic PII and PCI redaction features that eliminate the need for a separate masking tool. Users reported issues with the documentation around advanced configurations and concurrency handling, the need for more granular reporting per agent, and the lack of more voice styles and natural emotions. Year Founded 2023 HQ Location San Francisco, US Company Website https://smallest.ai/ Twitter @smallest\_AI LinkedIn® Page https://www.linkedin.com/company/smallest ### [JustCall](https://www.g2.com/products/saas-labs-justcall/reviews) [By Saas Labs](https://www.g2.com/sellers/saas-labs) [ (2,388)4.3 out of 5 ](https://www.g2.com/products/saas-labs-justcall/reviews#reviews "Read JustCall Reviews") Product Description JustCall is the only AI-powered business communication platform that brings calls, texts, email, and WhatsApp together in one place. It helps customer-facing teams work more efficiently, respond faste **Users:** CEO, Account Executive · **Industries:** Computer Software, Financial Services · **Market Segment:** 59% Small-Business, 31% Mid-Market User SentimentHow are these determined? Users frequently mention the ease of use, seamless integration with CRMs like HubSpot and Salesforce, and the ability to handle calls and texts from anywhere as key benefits of JustCall. Users mentioned issues with call quality depending on internet connectivity, the complexity of initial setup with certain CRMs, and the restriction of some advanced features to higher-tier plans as drawbacks. Year Founded 2016 HQ Location Palo Alto, California Company Website https://www.saaslabs.co/ Twitter @saas\_labs LinkedIn® Page https://www.linkedin.com/company/10436435/ ### [Ringg AI](https://www.g2.com/products/ringg-ai/reviews) [By Ringg AI](https://www.g2.com/sellers/ringg-ai) [ (22)4.8 out of 5 ](https://www.g2.com/products/ringg-ai/reviews#reviews "Read Ringg AI Reviews") Product Description Ringg AI is an enterprise-grade platform for building, deploying, and scaling production-ready conversational AI agents across voice, WhatsApp, web, and browser channels. It gives teams control across **Market Segment:** 45% Small-Business, 27% Mid-Market ![Aditya J.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Aditya J.") AJ Excellent support for Hindi and Regional languages. Very cost effective. Direct telephony integrations and easy to setup. Really good self...[Read review](https://www.g2.com/products/ringg-ai/reviews/ringg-ai-review-11780188) ![Verified User](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User") G I liked Ringg AI because it feels just like a real conversation, and customers don't feel like they are talking to a bot. Its pricing is very low,...[Read review](https://www.g2.com/products/ringg-ai/reviews/ringg-ai-review-12381124) Year Founded 2023 HQ Location Bengaluru, IN Company Website https://ringg.ai LinkedIn® Page https://www.linkedin.com/company/ringg/ ### [Nextiva](https://www.g2.com/products/nextiva/reviews) [By Nextiva](https://www.g2.com/sellers/nextiva) [ (3,585)4.5 out of 5 ](https://www.g2.com/products/nextiva/reviews#reviews "Read Nextiva Reviews") Product Description Nextiva is a Unified CXM company that provides AI-powered customer experience solutions. Nextiva powers 100,000+ businesses and billions of conversations every year with its all-in-one customer exp **Users:** Owner, Office Manager · **Industries:** Hospital & Health Care, Insurance · **Market Segment:** 77% Small-Business, 22% Mid-Market ![Andy K.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Andy K.") AK The best thing is the ease of use. Even though it is a tech rich platform, it is very easy to use for less tech savvy people.[Read review](https://www.g2.com/products/nextiva/reviews/nextiva-review-12590009) ![Kelsey B.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Kelsey B.") KB Customer support is usually pretty good.[Read review](https://www.g2.com/products/nextiva/reviews/nextiva-review-12829499) Year Founded 2008 HQ Location Scottsdale, Arizona Company Website https://www.nextiva.com/ Twitter @Nextiva LinkedIn® Page https://www.linkedin.com/company/459293/ ### [Aircall](https://www.g2.com/products/aircall/reviews) [By Aircall](https://www.g2.com/sellers/aircall) [ (1,624)4.4 out of 5 ](https://www.g2.com/products/aircall/reviews#reviews "Read Aircall Reviews") Product Description Connect, Empower, and Grow with Aircall. We're not just a business phone system; we're an AI-powered platform for customer conversations. Aircall seamlessly integrates voice, SMS, WhatsApp, and social **Users:** Sales Development Representative, CEO · **Industries:** Computer Software, Information Technology and Services · **Market Segment:** 53% Small-Business, 41% Mid-Market User SentimentHow are these determined? Reviewers like Aircall's ease of use, clear call quality, and its ability to integrate with CRM systems like Salesforce and HubSpot, enhancing productivity and efficiency. Users experienced occasional glitches, inconsistent call quality on unstable internet connections, and found some features like the power dialer and transcript not working as expected. Year Founded 2014 HQ Location New York Company Website https://www.aircall.io Twitter @aircall LinkedIn® Page https://www.linkedin.com/company/5013970/ [![G2 Advertising](/assets/my-g2-logo-41632af6f81a240a0a9886638f412b2ac9a29f4001534f8c83be89a58ef9d45d.svg "G2 Advertising")](https://sell.g2.com/case-studies/how-aisdr-uses-g2-ads-to-turn-g2-into-top-5-traffic-source) Sponsored G2 Advertising Get 2x conversion than Google Ads with G2 Advertising! G2 Advertising places your product in premium positions on high-traffic pages and on targeted competitor pages to reach buyers at key comparison moments. 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