AI · alternatives · 2026
24 alternatives to A personalised AI tutor with < 1s voice responses
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…
This is a voice-enabled AI tutor trained on Andrej Karpathy's YouTube videos, delivering responses in under one second from voice input to voice output. It uses retrieval-augmented generation to answer questions about… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier. A personalised AI tutor with < 1s voice responses launched in 2024; newer entries below may have overtaken it.
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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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EverTutor Live▲580Your very own AI Tutor that teaches, adapts, and interacts
2025 · live.evertutor.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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I built a voice agent from scratch that averages ~400ms end-to-end latency (phone stop → first syllable). That’s with full STT → LLM → TTS in the loop, clean barge-ins, and no precomputed responses. What moved the needle: Voice is a turn-taking problem, not a transcription problem. VAD alone fails; you need semantic end-of-turn detection. The system reduces to one loop: speaking vs listening. The two transitions - cancel instantly on barge-in, respond instantly on end-of-turn - define the experience. STT → LLM → TTS must stream. Sequential pipelines are dead on arrival for natural…
Mar 2026 · ntik.me · 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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Wavel AI▲289Most realistic and natural AI voiceover & dubbing for videos
2023 · wavel.ai · its alternatives →
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Retell AI▲300API that helps developers build human-like voice agents
2024 · retellai.com · its alternatives →
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Dubbing AI▲671Change your voice to anyone in realtime with AI, for free
2023 · dubbingai.io · its alternatives →
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Inworld TTSfree tier, from $25/mo▲318Hey HN, this is Igor, one of the engineers behind Inworld Runtime, which we're releasing today in public preview. We built it to solve the common problem we and our customers had: engineers spend more time on AI ops and plumbing than on actual feature development. This was often due to the challenge of using Python for I/O-bound, high-concurrency workloads and complexity maintaining pipelines with streams that use always-changing ML models. Our solution is a high-performance runtime written in C++ with the core idea of defining AI logic as graphs. For instance, a basic voice-to-voice…
2025 · inworld.ai · 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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Hello Hacker News, When learning foreign languages, I made the most progress by speaking them throughout the day, every day. So I made a site where you can *speak* to an AI language teacher to practice both listening and speaking. # The product *What I have now:* * Multilingual speech recognition: You can ask a question in English and get an answer in your target language. * Feedback on your grammar. * Suggestions: See examples of what to say next to keep the conversation flowing. * Speed: Choose a lower speed for beginners or a faster one for advanced levels. * Translations: Click to see a…
2023 · gliglish.com · its alternatives →
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Voicebun▲189Hey HN, I built Voicebun as a pet project because I was frustrated with how locked-down and rigid voice agents still are—many tools are either closed platforms, lack deep customization, or charge a lot just to test ideas. I wanted a way to quickly spin up AI voice agents that I could fully control—from the voice itself to the logic behind every word. Voicebun is an open-source voice agent builder. You can: - Clone voices and generate audio using your own scripts and prompts - Dynamically change prompts based on user input - Add custom logic through functions and webhooks (e.g. hit an API,…
2025 · voicebun.com · its alternatives →
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AI Voice Cloning▲182Clone any voice in 3 seconds – hyper-realistic and free
2025 · anyvoice.net · 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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AI-generated voice-over with human touch
2023 · voxqube.com · its alternatives →
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Real-time AI mock interviews that simulate the real deal
2024 · its alternatives →
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A fast, open-source voice assistant powered by Groq, Cartesia, and Vercel.
2024 · swift-ai.vercel.app · its alternatives →
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1xBet app untuk Android di Indonesia: pengalaman taruhan online yang lancar dan praktis langsung dari genggaman Anda, 1xBet download apk
2025 · synthicai.com · its alternatives →
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Real-time Voice-to-Voice Mock Interviews & Feedback with AI
2024 · 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 →