6 open source AI voice assistants. 4 have a free plan. Half of the paid plans start at $25.49 a month or less. Newest check: 28 Oct 2026.
268 of 721 tools were checked against the vendor's own page in the last 30 days.
| Tool | Price from | Free plan | Runs on | Checked |
|---|---|---|---|---|
| KugelAudioEuropean TTS API with fast first-audio latency across dozens of languages, GDPR-compliant EU hosting with zero data retention, and a 78% human-preference win rate over ElevenLabs on German-language tests. Billed per minute, no card required to start. | -- | -- | Web | 26 Sep |
| Bolna AIVoice AI agent platform for Indian-language phone calls, with a no-code studio, REST API, bulk campaigns and an MIT-licensed core on GitHub. | -- | -- | Web | 14 Oct |
| Resemble AIGenerative voice AI and deepfake detection for enterprise trust | $29/mo | Yes | Web · Mac · Windows | 19 Aug |
| Rev AISpeech-to-text API transcribing at $0.003/minute across 58+ languages, trained on 3M+ hours with optional human transcription at $1.99/minute for 99%+ accuracy. | $25.49/mo | Yes | Web | 19 Aug |
| SkillyOpen-source Mac app that listens to your question, answers by voice and moves a pointer to the right button, in any app or browser tab. | $5/mo | Yes | Web · Mac | 28 Oct |
| Play.ht[DISCONTINUED] Play.ht was an AI text-to-speech platform with 900+ voices in 142 languages. Meta acquired the company in 2025 and shut it down completely by year's end. See TechCrunch and Meta's official announcement for proof. | $39/mo | Yes | Web · iOS · Android | 19 Aug |
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