Open Source TTS vs Paid APIs: How to Choose Wisely

Open source TTS and paid APIs both deliver high-quality speech; the choice hinges on team capacity and workload scale rather than model quality. Self-hosting offers full-stack control and data sovereignty but adds infrastructure and engineering overhead, while managed APIs like ElevenAPI provide turnkey, SLA-backed access at metered per-character rates. The article also distinguishes open weight from open source models and notes that data residency and Zero Retention Mode options may be limited to Enterprise plans.