Last updated: Aug 12, 2025
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Overview
smallest.ai provides an API for generating low-latency speech and conversational agents. Developers can integrate it to power voice assistants, IVR systems, and real-time chat with minimal delay.
Key Features
✦ Sub-100ms Latency: Near-instant speech generation.
✦ Custom Voice Models: Fine-tune voice style and tone.
✦ Streaming API: Real-time streaming for live interactions.
✦ Speaker Diarization: Identify and separate multiple speakers.
✦ Multi-Language: Supports major global languages.
Advantages
🟩 Real-Time Interaction: Enables live voice bots.
🟩 Developer Friendly: Simple REST API.
🟩 Scalable: Handles large volumes of requests.
🟩 Custom Voices: Brand-specific voice personas.
🟩 Full Privacy: Opt-in data policies.
Limitations
🟥 Costly at Scale: High-volume usage can be expensive.
🟥 Complex Setup: Requires audio streaming integration.
🟥 Limited Templates: No plug-and-play voicebots.
🟥 Beta Features: Some SDKs in preview.
🟥 Region Availability: Data centers limited regionally.
Use Cases
➤ Voice Assistants: Power customer service bots.
➤ IVR Systems: Deploy interactive call menus.
➤ Live Translations: Real-time language translation bots.
➤ Gaming NPCs: Create dynamic character voices.
➤ Accessibility Tools: Add speech to apps for accessibility.
Pricing Details
Smallest.ai is an enterprise-grade voice AI platform offering text-to-speech, voice agents, and voice cloning with ultra-low latency.
⭘ Free ($0/month): 1 template AI agent, basic TTS model access, full TTS Studio, and $1 in test credits. oaicitation:0‡Smallest.ai
⭘ Personal ($49/month): Everything in Free, plus no-code builder for 5 agents, premium Lightning voices, 3 concurrent requests, email support. oaicitation:1‡Smallest.ai
⭘ Business ($1,999/month): Includes Personal features, professional voice clone support, large credit bundles, 10 concurrent requests, priority Slack + email support. oaicitation:2‡Smallest.ai
⭘ Enterprise (custom pricing): On-prem/VPC deployments, CRM/webhook integrations, SLA-backed uptime, dedicated account manager. oaicitation:3‡Smallest.ai
Free: ~\$0.15 (Lightning V1) / \$0.50 (Lightning V2)
Personal: ~\$0.08 (V1) / \$0.20 (V2)
Business: ~\$0.05 (V1) / \$0.10 (V2)
TTS Pricing by Plan (approximate per 10K characters):
oaicitation:4‡Smallest.ai
Usage-based rates: Cost starts at ~$0.08/min, decreasing 2–3× with higher volume. oaicitation:5‡atoms-docs.smallest.ai
Summary
smallest.ai delivers sub-100ms text-to-speech and live voicebot APIs for real-time applications.
Released Dates
2024
Feb – smallest.ai launched low-latency voice API.
2024
Sep – Added streaming and diarization.
2025
Mar – Introduced enterprise contracts.
