AI · alternatives · 2026
24 alternatives to Reverb ASR+Diarization, the Best Open Source ASR for Long-Form Audio
Hey everyone, My name is Lee Harris and I'm the VP of Engineering for Rev.com / Rev.ai. Today, we are launching and open sourcing our current generation ASR models named "Reverb." When OpenAI launched Whisper at Interspeech two years ago, it turned the ASR world upside down. Today, Rev is building on that foundation with Reverb, the world's #1 ASR model for long-form transcription – now open-source. I am proud to announce that we are releasing two models today, Reverb and Reverb Turbo, through our API, self-hosted, and our open source + open weights solution. ---------- We are releasing…
Reverb ASR+Diarization is an open-source speech recognition system from Rev.ai designed for transcribing long-form audio. The system offers two model variants—Reverb and Reverb Turbo—available through API, self-hosted… 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. Reverb ASR+Diarization, the Best Open Source ASR for Long-Form Audio launched in 2024; newer entries below may have overtaken it.
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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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Our goal with this project is to build a completely open source, state of the art turn detection model that can be used in any voice AI application. I've been experimenting with LLM voice conversations since GPT-4 was first released. (There's a previous front page Show HN about Pipecat, the open source voice AI orchestration framework I work on. [1]) It's been almost two years, and for most of that time, I've been expecting that someone would "solve" turn detection. We all built initial, pretty good 80/20 versions of turn detection on top of VAD (voice activity detection) models. And…
2025 · github.com · its alternatives →
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I wanted to share our new speech to text model, and the library to use them effectively. We're a small startup (six people, sub-$100k monthly GPU budget) so I'm proud of the work the team has done to create streaming STT models with lower word-error rates than OpenAI's largest Whisper model. Admittedly Large v3 is a couple of years old, but we're near the top the HF OpenASR leaderboard, even up against Nvidia's Parakeet family. Anyway, I'd love to get feedback on the models and software, and hear about what people might build with it.
Feb 2026 · github.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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Omnilingual ASR▲132Advancing automatic speech recognition for 1,600+ languages
Nov 2025 · ai.meta.com · its alternatives →
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Premium AI voice quality without the premium price tag.
2025 · async.com · its alternatives →
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:speech_balloon: An On-Premises, Streaming Speech Recognition System - GitHub - iceychris/LibreASR: :speech_balloon: An On-Premises, Streaming Speech Recognition System
2020 · github.com · its alternatives →
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Hi HN, OpenAI recently released a model for automatic speech recognition called Whisper [0]. I decided to reimplement the inference of the model from scratch using C/C++. To achieve this I implemented a minimalistic tensor library in C and ported the high-level architecture of the model in C++. The entire code is less than 8000 lines of code and is contained in just 2 source files without any third-party dependencies. The Github project is here: https://github.com/ggerganov/whisper.cpp With this implementation I can very easily build and run the model - “make…
2022 · github.com · its alternatives →
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Next-Gen Speech-to-Text with Unmatched Performance
2023 · deepgram.com · its alternatives →
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Generate English subtitles for videos in any language
2022 · its alternatives →
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A TTS model capable of generating ultra-realistic dialogue in one pass. - nari-labs/dia
2025 · github.com · its alternatives →
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MARS5 TTS▲489Open-source, insanely prosodic text-to-speech model
2024 · github.com · its alternatives →
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Botium Speech Processing. Contribute to codeforequity-at/botium-speech-processing development by creating an account on GitHub.
2020 · github.com · its alternatives →
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OpenWispr▲190100% local open source AI speech-to-text model
2025 · openwhispr.com · its alternatives →
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Production ASR for noisy multilingual audio
Apr 2026 · microsoft.ai · its alternatives →
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Free & fast alternative to Wispr Flow. Contribute to zachlatta/freeflow development by creating an account on GitHub.
Feb 2026 · github.com · its alternatives →
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A few years ago, right after high school, I decided to try to make a simultaneous translation app for Android as a side project, it took longer than expected (about 2 years) and I had to make a lot of compromises (I had to use Google's API and therefore make users use a developer key because at the time there were no free solutions for speech recognition and translation that had good quality). At the end of university, I decided to pick it up again and finally, using OpenAi's Whisper for speech recognition and Meta's NLLB for translation (with both running locally on the phone), I managed to…
2024 · github.com · its alternatives →
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Transcribe audio from your device microphone using 100% local / client-side processing.
2023 · ermine.ai · its alternatives →
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State-of-the-art (ranked #1 Aug 2022) German Speech Recognition in 284 lines of C++. This is a 100% private 100% offline 100% free CLI tool. - DeutscheKI/tevr-asr-tool
2022 · github.com · its alternatives →
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Hold a shortcut, speak, and BetterWispr types clean text into any Mac app. Local speech models, a style for each app, meeting notes and insights. Free and open source, with no account required.
13d ago · betterwispr.com · its alternatives →
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- I built a sub-500ms latency voice agent from scratch alternatives
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- Conversational AI 2.0 From ElevenLabs alternatives
- Omnilingual ASR alternatives
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 →