Smallest AI vs Rime AI: Features, Pricing and User Reviews 2026

Smallest AI uses a pay as you go pricing model for its Agents and Models. New users start with $10 in free credits and only pay for what they use afterward.

Agent calls cost between $0.09 and $0.21 per minute depending on the model used, and text messages cost $0.005 each. Add-ons include Knowledge Base storage at $3 per GB per user, Knowledge Base queries at $2 per 1,000 queries, and PII removal at $0.01 per minute. Renting a phone number costs $10 per month.

For voice models, Lightning text to speech costs $0.175 per 10,000 characters, while Pulse speech to text starts around $0.003 per minute.

Larger teams can choose the Enterprise plan, which offers custom pricing, dedicated infrastructure, priority support, and compliance features, with agent calls priced as low as $0.05 per minute.

Rime AI uses usage based pricing, so you only pay for the amount of speech you generate. The Starter plan begins at $0.03 per 1,000 characters, which is close to one minute of audio. New users get about 800 minutes free, worth around 800,000 characters, with no credit card required to start.

Pricing also depends on the voice model you pick. Mist v3 costs $0.03 per 1,000 characters and focuses on speed, while Coda costs $0.05 per 1,000 characters and focuses on natural sounding speech.

For larger organizations, the Enterprise plan moves to custom volume pricing based on scale. It includes unlimited concurrent voice generations, unlimited custom voice clones, dedicated support, and options to deploy on the cloud, on prem, or inside a private network.