ElevenLabs gives more natural, studio-grade voices, solid SSML controls and a production-ready API—better for final 30–60s hero ads and multilingual fidelity (commercial rights on paid tiers). Canva TTS is faster and cheaper inside the design flow, good for quick iterations but typically less natural and with limited SSML. Practical workflow: use Canva for drafts/localization, ElevenLabs for final deliverables and batch API rendering.