AI phone agents with integrated audio understanding, model routing, and voice optimization
Stage
Startup
Not given
Founded
2026
Not given
Based in
Not given
US
Pricing model
Freemium
Paid
Pricing
Free with no card or account required. Paid plans: Standard $20/month, Pro $100/month, Plus Ultra $999/month. All paid plans cover up to 8 members. Pay-as-you-go top-ups also available.
Cost-plus pricing: customers pay vendor list prices for models and voice plus hosting (15% of vendor costs, 0.5¢ to 2¢ per minute) plus company margin (17-25%). Lean calls cost from 2.0¢/min (1.18¢ vendors + 0.50¢ hosting + 0.35¢ margin). Receptionist calls cost 4.7¢/min (3.36¢ vendors + 0.50¢ hosti
Key features
Free to use with no card and no account
Pays users for contributing computation from their devices
Runs on iPhone, iPad, Mac, Android, and Windows
Water savings estimate included with each answer
Progressive chip system upgrades unlock higher intelligence levels
Research and Private conversation modes
Hands-free conversation on iPhone
Multiple thinking levels: Fast, Plus, Ultra, and Plus Ultra
Multi-model architecture running multiple transcription and language models per call
Zeus AI agent that builds, tests and tunes voice agents automatically
Simulated call testing before live deployment
Live call monitoring and observability
A/B testing and automated fix suggestions
Integration wizard for CRM, VoIP and business software
Client portals for managing multiple agents
Knowledge base integration for agent grounding
Outbound campaigns with CSV upload and scheduling
What makes it different
Frontier AI powered by consumer hardware instead of data centers
Users earn rewards for contributing their device's computation
Environmental impact tracking with water savings estimates
Transparent chip system progression as users save water
Native Apple Liquid Glass design on iOS and Mac
Cost-plus pricing with no margin markup pass-through when vendor prices drop
Fully agentic Zeus AI that handles entire lifecycle from creation to optimization
Multi-model architecture for superior audio understanding vs 3-step pipelines
Starts at 2¢/min, cheaper than competitors and call center labor
Leiolai
ThunderPhone