What is SpeechifyAI?

SpeechifyAI is Speechify's separately billed developer platform for low-latency text-to-speech and enterprise voice agents.

Core offerings

  • Simba 3.2 for expressive English speech.
  • Simba 3.0 for multilingual synthesis.
  • Streaming, SSML, voice cloning and service accounts on paid plans.
  • Custom enterprise voice-agent deployments.

Pricing

Free is US$0 with 500,000 characters per month and stops when its allowance is exhausted. Starter is US$10/month with 1.9 million characters and US$10 per additional million; Pro is US$99 with 13.5 million and US$8 per additional million; Scale is US$499 with 78 million and US$6 per additional million. Enterprise is custom priced. Self-serve plans renew monthly, unused included balance does not roll over, and bought top-ups remain until used.

API and model availability

SpeechifyAI's current public catalogue contains Simba 3.2 and Simba 3.0. Both are included on the API Cost page with the published Starter, Pro and Scale character rates; obsolete Simba names are removed.

Official sources: SpeechifyAI pricing, SpeechifyAI models.