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Pick up to three. Scores are curated estimates on a 0–10 scale. Lock-in: higher = worse.

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DimensionCartesiaElevenLabs
Overall7.88.3
Capability fit8.49.4
Price / performance8.07.5
Latency / reliability7.88.8
Developer & agent DX8.49.0
Privacy / data retention7.57.0
Lock-in risk (higher = worse)4.55.5
Maturity / track record7.08.8
PricingAs of 2026-09-14: Credit plans — Free $0 (20k credits), Pro $5 (100k), Startup $49 (1.25M), Scale $299 (8M) + prepaid agent minutes. Sonic TTS + Ink STT + voice agents. Cartesia ph…TTS/STS/voice agents; character/credit plans; telephony integrations (e.g. Twilio).