Give your agent specialist skills for the work around your product
AI phone agents with integrated audio understanding, model routing, and voice optimization
Stage
Not given
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Founded
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Based in
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US
Pricing model
Freemium
Paid
Pricing
Not given
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
Pre-built skills for business ops, organic growth, research and development
Compose skills into repeatable workflows
Signed receipts recording each run
Run locally without account via open-source CLI
Secure credential management through connectors
Approval gates for spending and publishing actions
Integration with Claude Code, Codex, Cursor and other agents
Connect to GitHub, Slack, Apollo, Linear, Notion, Sentry and more
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
Runs skills locally on your machine via open-source CLI without requiring an account
Keeps credentials secure in connectors so they never appear in skills or receipts
Records every action in a signed receipt for full audit trail
Write and combine your own skills into custom workflows
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
runx
ThunderPhone