Neither ttsMP3 nor Article2audio offers a free trial.
The starting price of Article2audio begins at $4/month, while pricing details for ttsMP3 are unavailable.
ttsMP3 offers several advantages, including Free use, 28 languages supported, Multiple accents available, Online listening available, Converts speech to MP3 and many more functionalities.
The cons of ttsMP3 may include a Limited to 3000 characters, No offline functionality, Limited language accents, Choppy voice transitions. and Additional features require learning
Article2audio offers several advantages, including Converts complex texts, Interprets programming codes, Nuanced voice-overs, Synthesizes tables, Provides image descriptions and many more functionalities.
The cons of Article2audio may include a Only supports English, Limited voice options, Sharing requires author consent, Beta version (work in progress). and Pricing per audio minute