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Life & fun · alternatives · 2026

24 alternatives to Dia, an open-weights TTS model for generating realistic dialogue

A TTS model capable of generating ultra-realistic dialogue in one pass. - nari-labs/dia

Dia is an open-source text-to-speech model designed to generate realistic dialogue. The model creates natural-sounding speech from text input and is available for developers and researchers who want to build… 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.

  1. 1

    Ultra-Realistic AI Voice Model for Dialogue

    2025 · dia-tts.com · its alternatives →

  2. 2
    MARS5 TTS▲489

    Open-source, insanely prosodic text-to-speech model

    2024 · github.com · its alternatives →

  3. 3

    Kitten TTS is an open-source series of tiny and expressive text-to-speech models for on-device applications. We are excited to launch a preview of our smallest model, which is less than 25 MB. This model has 15M parameters. This release supports English text-to-speech applications in eight voices: four male and four female. The model is quantized to int8 + fp16, and it uses onnx for runtime. The model is designed to run literally anywhere eg. raspberry pi, low-end smartphones, wearables, browsers etc. No GPU required! We're releasing this to give early users a sense of the latency and voices…

    2025 · github.com · its alternatives →

  4. 4

    Open-Source AI Voice with Emotion & Realism

    2025 · narilabs.org · its alternatives →

  5. 5

    First TTS model to support all 22 Indic languages + English

    2024 · its alternatives →

  6. 6

    Build Powerful Voice Agents

    2025 · openai.com · its alternatives →

  7. 7

    Built a ~9M param LLM from scratch to understand how they actually work. Vanilla transformer, 60K synthetic conversations, ~130 lines of PyTorch. Trains in 5 min on a free Colab T4. The fish thinks the meaning of life is food. Fork it and swap the personality for your own character.

    Apr 2026 · github.com · its alternatives →

  8. 8

    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 →

  9. 9

    Hey there, I’m Brian. I've been shipping conversational models over here at Tavus for the past two years. I want to tell you about our new audio-understanding model: Sparrow-2! It’s a new category of model and a unique new approach to conversational audio. Earlier this year we launched Sparrow-1, (at the time) our SoTA turn taking model. Since our Sparrow-1 launch, I’ve spent a lot of time listening to humans talking and trying to really understand how people know when to talk, when to listen, and when to wait. I’ve also been hunting down failure modes of the current SoTA models. And while…

    2024 · tavus.io · its alternatives →

  10. 10

    Fast & Affordable Text-to-Speech API

    2025 · unrealspeech.com · its alternatives →

  11. 11

    Describe any AI voice and prompt its emotional delivery

    2025 · hume.ai · its alternatives →

  12. 12

    Ultra-realistic AI voices & cloning

    2025 · allvoicelab.com · its alternatives →

  13. 13

    Have a natural, spoken conversation with AI! Contribute to KoljaB/RealtimeVoiceChat development by creating an account on GitHub.

    2025 · github.com · its alternatives →

  14. 14

    Diatts is a weblog on open-source speech synthesis: dialogue timing, prosody, corpus preparation, model documentation and listening-test evaluation.

    2025 · diatts.com · its alternatives →

  15. 15

    I built this because I wanted to see how far I could get with a voice-to-text app that used 100% local models so no data left my computer. I've been using a ton for coding and emails. Experimenting with using it as a voice interface for my other agents too. 100% open-source MIT license, would love feedback, PRs, and ideas on where to take it.

    Apr 2026 · github.com · its alternatives →

  16. 16

    Tighter instruction adherence in speech agents

    Feb 2026 · developers.openai.com · its alternatives →

  17. 17

    Nari ranks first in STT latency, second in STT WER, second in TTS latency, and first in TTS WER in Coval’s September 14, 2026 benchmarks.

    Sep 2026 · narilabs.com · its alternatives →

  18. 18

    Free ultra realistic text to speech for voiceover projects

    2020 · descript.com · its alternatives →

  19. 19
    Inworld TTSfree tier, from $25/mo▲318

    Hey 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 →

  20. 20

    The voice for your real-time AI applications

    2025 · kyutai.org · its alternatives →

  21. 21

    Highly expressive and natural speech generation model

    2025 · microsoft.ai · its alternatives →

  22. 22
    VoxCPM2▲110

    Open-source 48kHz TTS with voice design and cloning

    Apr 2026 · github.com · its alternatives →

  23. 23

    Local voice chatbot for engaging conversations, powered by Ollama, Hugging Face Transformers, and Coqui TTS Toolkit - mezbaul-h/june

    2024 · github.com · its alternatives →

  24. 24

    Highly expressive TTS model with high fidelity voice cloning

    2025 · zyphra.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 →