Company profile
Smallest AI
Pioneering compact, powerful AI models for real-time Voice AI applications.
- Category
- NLP & speech
- Headquarters
- San Francisco, California
- Sells to
- Mixed
- Business model
- Usage-based API, Freemium
- Deployment
- Cloud / SaaS, On-premise, API, Hybrid
- Pricing
- Pay as you go, with an Enterprise plan available. Pricing varies by models selected and usage minutes/characters. · free tier
- Builds own models
- Yes
- Modalities
- speech, Text, Audio, Multimodal
What Smallest AI does
Smallest.ai is an AI research lab that develops compact, powerful models for low latency, high accuracy Speech-to-Text (STT), Text-to-Speech (TTS), Speech-to-Speech (S2S), and Small Language Models (SLM). Their platform is designed to power Voice and Multi-Modal AI applications across over 100 industries, offering enterprise-grade security, on-prem and private cloud deployments, and compliance with SOC2, GDPR, HIPAA, and PCI standards. They believe in the evolution of AI through specialized, small models that adapt quickly and operate efficiently, even on edge devices, by separating reasoning from memory and utilizing compressed representations.
Products
- LightningBlazing-fast text-to-speech model with 100 ms latency across 15+ languages, designed for real-time voice agents. Available in v3.1 and v3.1 Pro versions with different voice catalogs and language support.
- PulseHighly accurate speech-to-text model supporting 38 languages with emotion and speaker detection. Available for pre-recorded and real-time streaming transcription, and in a Pro version.
- ElectronA sub-3B small language model (SLM) that offers chat completions with OpenAI-compatible request/response shapes, outperforming larger models like GPT-4.1 in some contexts.
- HydraOne of the first native speech-to-speech models built for production.
- Voice AgentsConfigurable AI-powered voice agents for various use cases, including sales, debt collection, healthcare, real estate, and general business operations. They can handle inbound and outbound calls, negotiate, schedule, provide 24/7 support, and integrate with existing systems.
Key capabilities
- Real-time Voice AI
- Low latency
- High accuracy
- Multi-modal AI applications
- Compact and efficient models
- Enterprise-grade security
- On-prem and private cloud deployments
- SOC2 compliant
- GDPR compliant
- HIPAA compliant
- PCI compliant
- Multilingual support (15+ languages for TTS, 38 languages for STT)
- Emotion and speaker detection (Pulse)
- Voice cloning
- Agentic platform for various use cases
- API access for developers
- Pay-as-you-go and Enterprise pricing plans
- Dedicated infrastructure for enterprise plans
- Dedicated forward deployed engineers and priority support for enterprise plans
- Advanced security, SSO, and compliance support for enterprise plans
- Knowledge Base integration for agents
- PII Removal
- Post Call Analytics
- Web Widget
- Advanced Denoising
- Custom Branding
- 99.99% Guaranteed Uptime (SLA)
Use cases
- Real-time voice agents
- Sales agents
- Debt collection (automating collections, negotiating terms, updating CRM)
- Healthcare (patient scheduling, billing, care coordination, reminders, follow-ups, patient queries)
- Real estate (lead conversion, client engagement, qualifying buyers, scheduling viewings, follow-ups)
- Customer service (answering inquiries, booking appointments, handling routine inquiries)
- Sales operations (lead follow-up, outbound campaigns, promotions, reactivation outreach)
- Live captioning
- Voice-agent turns
- Simultaneous interpretation
- Transcription of complete audio files
- Prototyping and small-scale deployments
- Production workloads at scale
AI approach
Smallest.ai is an AI research lab focused on pioneering compact, powerful multi-modal models for low latency, high accuracy Speech-to-Text (STT), Text-to-Speech (TTS), Speech-to-Speech (S2S), and Small Language Models (SLM). They believe in specialized small models that adapt and learn continuously, rather than one massive model. They build their own production-grade audio models and an agentic platform for various use cases.
Tech named: NLP, Computer Vision, Accelerated Computing, Data Science, Machine Learning, Voice AI, Text to Speech, Speech to Text, Speech to Speech, Small Language Models, Lightning (TTS model), Pulse (STT model), Electron (SLM model), Hydra (S2S model), Voice cloning, compressed latent representations, OpenAI-compatible API
Industries served
- Technology, Information and Internet
- Healthcare
- Real Estate
- Debt Collection
- General Business (for growing businesses)
- Any industry requiring Voice and Multi-Modal AI applications
What it says sets it apart
- Focus on small, efficient, and specialized models
- Ability to achieve capabilities of massive systems with smaller models
- Faster and more efficient deployment (edge devices to real-time applications)
- Continuous learning and adaptation from interaction
- Native voice modality processing, reasoning over compressed latent representations
- Industry-leading Speech AI (fast, accurate, multilingual, easy to integrate)
- Real conversations with natural-sounding interactions at scale
- Data security with on-premise deployment options and compliance
- Seamless integration with legacy systems
- Flawless handling of numbers and complex acronyms in voice models
- Comprehensive compliance certifications (ISO 27001, SOC 2 Type 2, GDPR, HIPAA, PCI:DSS)
- Proactive threat defense and advanced monitoring
Funding rounds we track
Seligman Ventures, Sierra Ventures, 3one4 Capital
Sierra Ventures, 3one4 Capital, Better Capital
From the AI funding tracker — rounds as reported by the linked publications.
This profile was compiled from Smallest AI's own public pages in July 2026 and reflects what the company states about itself — not an endorsement or an independent audit of those claims. Facts are extracted with AI and filtered by an automated check that drops any named product, customer or certification missing from the source pages. Full method. Something out of date? Tell us.