Smallest AI vs Fish Audio: 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.

Fish Audio offers a free plan plus several paid tiers billed monthly or annually.

• Free ($0/month): 8,000 monthly credits, about 7 minutes of generation, 3 public voice slots, and standard speed.

• Plus ($7.50/month, or $5.50/month billed annually): 250,000 credits, about 200 minutes of generation, private voice slots, priority generation, Voice Design access, and commercial use.

• Pro ($50/month, or $37.50/month billed annually): 2,000,000 credits, about 1,620 minutes of generation, 3 team seats, and 5 professional voice slots.

• Max ($999/month, or $749/month billed annually): 25,000,000 credits, about 6,250 minutes of generation, 10 team seats, and 15 professional voice slots.

• Enterprise (Custom pricing): Volume pricing billed annually, with organization-level controls, zero data retention, on-premise deployment, and SOC2 compliance.

Developers can also use the pay-as-you-go API, billed separately by usage for text-to-speech, transcription, and voice design requests, with no subscription required.