AI phone agents with integrated audio understanding, model routing, and voice optimization
Stage
Not given
Not given
Founded
Not given
Not given
Based in
Not given
US
Pricing model
Freemium
Paid
Pricing
Team: Free per organization, unlimited users, 200 session-hours per month. Enterprise and Gateway: Custom pricing, billed annually.
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
Reads every tool call agents make and blocks unsafe ones before they run
Catches stalled and runaway sessions while they run
Steers agents back when they go past what was asked
Tracks every session's tokens against usual usage
Stops credential and data leaks before they leave the machine
Inventories all agents, MCP servers and skills in use
Blocks dangerous calls before they run in agent hooks and at the gateway
Sends every finding to Slack, webhook or SIEM
Verifies each agent's identity before access
Keeps audit-grade masked records of every action and decision
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
Works with Claude Code, Codex, Cursor, Devin and more
Runs on your machines, gateways and in the cloud
Active steering corrects or stops drifting runs
One policy applied across all MCP servers, plugins and skills
Continuously monitors components for known vulnerabilities
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
Stacktrace
ThunderPhone