The reject pile
Curating means saying no.
“Hand-picked” is a word. Anyone can type it. There is exactly one proof a dump list can never show: what didn’t make it — and why. Here it is. 6 noes, each with a reason you can check and the date we looked at the source.
canopyai/Orpheus-TTS
TTS model · rejected- Promises
- State-of-the-art open-source speech synthesis with zero-shot cloning, ~200 ms latency. Repo licence Apache-2.0, and tagged apache-2.0 on HuggingFace too.
- Why not
- The code is Apache-2.0. The weights are not. The HF tags identify the model as a finetune of meta-llama/Llama-3.2-3B-Instruct — and Llama weights cannot be relicensed to Apache-2.0. What stays is the duty to display “Built with Llama”, to pass the agreement on, and to “include 'Llama' at the beginning of any such AI model name”. Orpheus does none of that.
Code licence ≠ weights licence. A licence tag is a claim by whoever uploaded it, not proof.
checked 31 Jul 2026 · HuggingFace model API + llama-models/models/llama3_2/LICENSE
coqui-ai/TTS · ⓍTTS-v2
TTS library · rejected- Promises
- Voice cloning in 16 languages. The most-linked “clone your voice locally” tutorial on the internet.
- Why not
- The weights sit under the Coqui Public Model License: non-commercial — and that restriction explicitly reaches the output and indirect revenue. A video using this voice that leads to a paid product is exactly that case. Second problem: Coqui as a company no longer exists.
“Non-commercial” doesn't stop at the model. It can reach into what you produce with it.
checked 31 Jul 2026 · Repo LICENSE + model card
SWivid/F5-TTS
TTS model · rejected- Promises
- Fast cloning with good quality. Sits in practically every recommendation list next to ⓍTTS.
- Why not
- Code MIT, weights CC-BY-NC-4.0. The repo says so itself: “The pre-trained models are licensed under the CC-BY-NC license due to the training data Emilia.” For a monetised product that is a disqualifier, not fine print.
Here the README tells the truth — you just have to read past the MIT badge.
checked 31 Jul 2026 · Repo README + LICENSE
ElevenLabs · free tier
TTS service · rejected- Promises
- The best voice on the market, 10,000 characters a month for free.
- Why not
- Terms of Use, verbatim: “if you access or use our Services free of charge … you may only use the Services for non-commercial purposes.” A monetised channel is commercial. The “Developer API” page changes nothing — same account tiers, no separate developer agreement. And even if it did: 10,000 characters don't cover a real monthly need of ~13,000.
With hosted services the restriction isn't in the licence, it's in the terms.
checked 31 Jul 2026 · elevenlabs.io/terms-of-use, read live
rany2/edge-tts
TTS client · rejected- Promises
- Microsoft's neural voices, free, no API key. The exact voice we used ourselves for two months.
- Why not
- It's an unofficial wrapper around the Edge browser's read-aloud endpoint. LGPLv3 covers the client, not the audio it produces — for the output there is no grant of rights at all, neither permitting nor forbidding. No contract, no SLA, switchable off at any time. That's not a litigation risk, it's an operational one: the brand voice hangs off an undocumented endpoint.
We list it even though we used it ourselves. That is precisely the point of this page.
checked 31 Jul 2026 · LICENSE file in the repo
Piper · voices “ryan” and “hfc_female”
TTS voices · rejected- Promises
- The two most recommended English Piper voices. Blazing fast, run on a Raspberry Pi.
- Why not
- Piper itself is MIT and perfectly fine. But these two voices in particular are licensed non-commercially on their own. Follow the internet's default recommendation and you land straight in the one corner you can't use.
With Piper every voice carries its own licence. The project's licence says nothing about the speaker's.
checked 31 Jul 2026 · Voice metadata in the Piper catalogue
k2-fsa/OmniVoice
TTS model · on hold- Promises
- Zero-shot TTS for 600+ languages, cloning, voice design via attributes. Apache-2.0 on code and weights, verified clean.
- Why not
- Not a no — just not chosen. We publish in English; 600 languages are an advantage we don't cash in, and every extra model in the stack is maintenance. Stays the candidate the moment on-device speech is needed in an app — the same group builds sherpa-onnx.
Not every no is a flaw. Sometimes it's just “good, but not for us” — and that belongs here just as much.
checked 31 Jul 2026 · HuggingFace model API + repo LICENSE
A no costs us nothing — we made the call while researching anyway. That’s why this page keeps growing, and why the list stays short.