AI · alternatives · 2026
24 alternatives to Retell AI
API that helps developers build human-like voice agents
Retell AI is an API that enables developers to build voice agents with human-like conversational abilities. The platform handles voice interactions with an average response time of 800 milliseconds, matching natural… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Retell AI launched in 2024; newer entries below may have overtaken it.
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Wavel AI▲289Most realistic and natural AI voiceover & dubbing for videos
2023 · wavel.ai · its alternatives →
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Have a natural, spoken conversation with AI! Contribute to KoljaB/RealtimeVoiceChat development by creating an account on GitHub.
2025 · github.com · 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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Luke from ElevenLabs here. We just released Scribe Realtime v2, our new real-time Speech to Text model. We rebuilt it from the ground up around a new architecture that uses predictive transcription – it anticipates the next likely word before it’s spoken. That makes it both fast (around 150 ms latency) and highly accurate. Scribe v2 Realtime outperforms every low latency transcription model across 30 commonly used EU and Asian languages – 93.5% accuracy, compared to Gemini 2.5 Flash (91.4%), GPT-4o MiniTranscribe (90.7%), and Deepgram Nova 3 (85%). It supports 90+ languages including…
2025 · elevenlabs.io · its alternatives →
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Last year when GPT-4 was released I started making lots of little voice + LLM experiments. Voice interfaces are fun; there are several interesting new problem spaces to explore. I'm convinced that voice is going to be a bigger and bigger part of how we all interact with generative AI. But one thing that's hard, today, is building voice bots that respond as quickly as humans do in conversation. A 500ms voice-to-voice response time is just barely possible with today's AI models. You can get down to 500ms if you: host transcription, LLM inference, and voice generation all together in one place;…
2024 · fastvoiceagent.cerebrium.ai · its alternatives →
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Premium AI voice quality without the premium price tag.
2025 · async.com · its alternatives →
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Create the most advanced bots in the simplest way
2016 · its alternatives →
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Chikka▲444Uncover user insights with intelligent AI voice interviewer
2025 · chikka.ai · its alternatives →
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Rerun▲301The easiest way to build AI agents for all your tasks
Jul 2026 · rerun.build · its alternatives →
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High-quality voice clones with just 60 seconds of audio
2023 · wavel.ai · its alternatives →
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The open-source framework for real-time AI voice
2025 · videosdk.live · its alternatives →
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AI voice library for content creators
2023 · marketplace.respeecher.com · its alternatives →
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Tighter instruction adherence in speech agents
Feb 2026 · developers.openai.com · its alternatives →
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Avaturn Live▲320AI avatars 9X faster, 4X expressive range w/, human fidelity
Nov 2025 · avaturn.live · its alternatives →
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Research teams trust. Conversations customers love.
2025 · getperspective.ai · its alternatives →
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Ethical voice AI and text to speech for creators
2024 · its alternatives →
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Voice agents powered by Simba 3.2 the world's #1 voice model
Jul 2026 · speechify.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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Calldock▲114Stop losing leads. Calldock's AI voice agents automatically call every lead within 60 seconds, qualify them with intelligent conversations, and deliver warm prospects ready to buy. Free trial.
2025 · calldock.co · 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 →