AI Use Cases

Audio · by Cartesia

Cartesia

Sonic: very low-latency voice generation built for live conversation.

+ Latency low enough for a voice agent that can be interrupted.
− Fewer polished preset voices than ElevenLabs, and it is API-first.

Free tierFree credits to try; usage-based afterapiweb

Open Cartesia ↗ best for: real-time voice agents

Evidence

rank #202 of 307
9evidence score / 100
0Hacker News stories, 30d · query "Cartesia"
0mentions in our release feed, 30d
–days since last activity
Ranked forText-to-speech & voice cloning

Cartesia alternatives

All 10 alternatives →
1
Fish Speech Open source
Open multilingual text-to-speech with few-shot voice cloning.

+ Clones a voice from seconds of audio and runs on your own GPU.
− The licence restricts some commercial use and setup is research-grade.

Weights are free; fish.audio hosts it for a feeopen sourceclilinuxapiweb
68new
evidence / 100
2
ElevenLabs Free tier
Text-to-speech and voice cloning with the most natural-sounding voices on the market, plus dubbing and a voice isolator.

+ Voices carry emotion and pacing that still beat most competitors, and AI dubbing translates a video while keeping the speaker's voice.
− Character-based credits run out fast on long scripts, and voice cloning raises consent and misuse concerns.

Starter $5/mo, Creator $22/mowebiosandroidapi
55▼ 5
evidence / 100
3
Kokoro TTS Open source
An 82M-parameter open TTS model that runs fast enough on a CPU.

+ Apache-licensed and small enough to run locally without a GPU.
− Limited voice range and no cloning.

Free, Apache-licensed weightsopen sourceclilinuxmacwindowsapi
53new
evidence / 100
4
Deepgram Free tier
A speech-to-text and text-to-speech API built for low-latency streaming at scale.

+ Among the fastest real-time transcription APIs available, with diarization and keyword boosting built in.
− Developer-only; there is no end-user app, and accuracy on heavily accented speech trails Whisper-class models.

$200 free credit; Nova STT from about $0.0043/minapi
15▼ 15
evidence / 100
5
Speechify Free tier
A read-aloud app that turns web pages, PDFs, books and emails into speech with celebrity and natural voices.

+ Listens to anything you would otherwise read, including scanned pages via OCR, at up to 4.5x speed.
− Aggressive upsells and auto-renewing annual billing generate frequent complaints.

Premium $139/yrwebmaciosandroidchrome-extension
11▼ 17
evidence / 100

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Ranked #6 of 11 for text-to-speech & voice cloning on AI Use Cases

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