AI · alternatives · 2026
24 alternatives to Quantz®
The simplest voice conversational AI builder for your site
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Quantz® launched in 2024; newer entries below may have overtaken it.
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Voice call chatbot for your followers & friends
2023 · its alternatives →
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Fine-tune and direct AI voices through prompts
2024 · its alternatives →
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Highly expressive and natural speech generation model
2025 · microsoft.ai · its alternatives →
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TLDR: We created a personalised Andrej Karpathy tutor that can response to questions about his Youtube videos in sub 1 second responses (voice-to-voice). We do this using a voice enabled RAG agent. See later in the post for demo link, Github Repo and blog write up. A few weeks ago we released the worlds fastest voice bot, achieving 500ms voice-to-voice response times, including a 200ms delay waiting for a user to stop speaking. After reaching the front page of HN, we thought about how we could take this a step further based on feedback we were getting from the community. Many companies were…
2024 · educationbot.cerebrium.ai · its alternatives →
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A low-code , No-Code Voice AI agents for everyone
2025 · its alternatives →
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Voice Agent API▲118One API to build production-ready voice agents
Apr 2026 · assemblyai.com · its alternatives →
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VOIQ VoiceBots▲132Human-sounding bots for sales, marketing and service calls
2019 · its alternatives →
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VoiceZeroAI▲72AI voice feedback that catches complaints before bad reviews
Apr 2026 · voicezero.ai · its alternatives →
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Let your AI answer calls, capture leads & forward to experts
2025 · apps.apple.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →