AI · alternatives · 2026
24 alternatives to Tortoise TTS as an API
At-cost per-second API for the best text-to-speech model.
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. Tortoise TTS as an API launched in 2023; newer entries below may have overtaken it.
- 1
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 →
- 2
MARS5 TTS▲489Open-source, insanely prosodic text-to-speech model
2024 · github.com · its alternatives →
- 3
Tortoise TTS is the best TTS available today. We built an open-source, at cost, pay per second API for it. The quality of intonation it generates is unparalleled, and we hope our at-cost API will make it easier for people to build on top! This allows folks to run via a single API call - it costs $0.03/query. The WAV file is downloadable, we apply no restrictions. We're open-sourcing all our work — we made Tortoise run 30% faster, and have more improvements coming. If you're keen to contribute we can help with ideas, pointers, compute and data; just DM us. Our fork with the improvements…
2023 · twitter.com · its alternatives →
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Orpheus TTS▲152Open-source TTS with emotion & voice cloning
2025 · canopylabs.ai · its alternatives →
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Mimic 3▲77Privacy-focused neural text-to-speech (TTS) engine
2022 · community.openconversational.ai · its alternatives →
- 8
First TTS model to support all 22 Indic languages + English
2024 · its alternatives →
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I built a pipeline that turns tweets about ML papers into a podcast. Code's up here. Happy hacking. https://github.com/yacineMTB/scribepod
2023 · scribepod.substack.com · its alternatives →
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VoiSistant▲80AI-powered speech to text, tts, & translation Mac app
Oct 2025 · apps.apple.com · its alternatives →
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2012 · tts-api.com · 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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Zyphra Zonos▲134Highly expressive TTS model with high fidelity voice cloning
2025 · zyphra.com · its alternatives →
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Parrot TTS▲110Make anything an audiobook or podcast
2025 · chromewebstore.google.com · its alternatives →
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Fast, accurate STT for production-grade voice agents
May 2026 · ringg.ai · its alternatives →
- 16
FreeTTS▲123Top TTS converter & audio editor to speed up your workflow
2024 · freetts.com · its alternatives →
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Chatterbox Turbo▲206Fast, expressive, open source TTS with native watermarking
Dec 2025 · resemble.ai · its alternatives →
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VoxCPM2▲110Open-source 48kHz TTS with voice design and cloning
Apr 2026 · github.com · its alternatives →
- 20
Free Text-to-Speech tool to create amazing dubbing speeches
2024 · ttsgenerator.com · its alternatives →
- 21
Turn text into natural speech in seconds.
Oct 2025 · indextts.ai · its alternatives →
- 22
Voxabot▲67Text to speech editor with SSML and API connections
2020 · voxabot.com · its alternatives →
- 23
(Now Go Bang!) Announcing meSpeak.js 2.0: TTS in JS, now even better.
2019 · masswerk.at · its alternatives →
- 24
Free text to speech online with AI voices. Generate and download browser TTS audio with no signup, WAV or MP3 export, and engine-specific offline support.
Jul 2026 · offlinetts.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 →