Neither Speechson nor AiSofiya offers a free trial.
Pricing details for both Speechson and AiSofiya are unavailable at this time. Contact the respective providers for more information.
AiSofiya offers several advantages, including Supports over 840 languages, Realistic voice-overs, Natural text generator, Supports SSML, Web and mobile access and many more functionalities.
The cons of AiSofiya may include a No Offline Access, Requires Registration, No API available, Limited SSML customization. and No Free Version