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software Voice & Speech

Smallest.ai

by Smallest.ai

Ultra-fast, ultra-cheap TTS for voice agents

Pros

  • Very low cost (~$0.025/1,000 chars)
  • Fast real-time latency
  • Free tier to start
  • On-prem available

Cons

  • Voice cloning gated to enterprise
  • Low default concurrency (5)
  • Developer-focused only

✓ Where it shines / best for

  • Developers building real-time, low-latency voice agents
  • Cost-sensitive teams needing high-volume TTS/STT
  • Multilingual and Indic-language voice applications

✕ Not the best fit for

  • Non-technical users wanting a polished consumer app
  • Teams needing the largest catalog of premium studio voices

Features

  • ✓ API access
  • ✓ Free tier
  • ✓ Text-to-speech
  • ✓ Real-time
  • ✓ Multilingual
  • ✓ Voice cloning
  • ✓ Voice agents
  • ✓ Low latency
  • ✓ Speech To Text

Pricing

PlanPriceBillingNotes
Free$0monthlyIncludes $10 free starter credits and ~30 minutes of high-quality TTS per month; access to API/playground. Voice cloning not included.
Pay as You GoUsage-basedusageSTT (Pulse) ~$0.005/min, Pulse Realtime ~$0.008/min, TTS (Lightning V3.1) ~$0.025 per 1,000 characters; 5 concurrent TTS, 100 RPM
Premium$29monthly~24 hours of TTS per month, enhanced API access, 2 instant voice clones
EnterpriseCustomcustomCustom voice cloning, on-prem deployment, 99.99% SLA, SSO/RBAC/SOC2, HIPAA included, priority support

Pricing verified from the official source. Prices change often — confirm on the vendor's site before buying.

Specifications

modelsLightning V3.1, Waves
latency~100ms
Sponsored

A full review is being generated for this product and will appear here shortly.

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