AI phone agents with integrated audio understanding, model routing, and voice optimization
Executable SOPs and specs for reliable, auditable agents
Stage
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Founded
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Based in
US
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Pricing model
Paid
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Pricing
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
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Key features
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
Compile SOPs into executable Skills
Deterministic rule execution in DML
Complete audit trails and run records
Export to MCP servers and Claude
WebAssembly sandbox for secure execution
Static taint analysis
Support for local and on-premises models
Decision models with branching
Visual audit diagrams
What makes it different
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
Deterministic control flow eliminates model-only decisions in regulated operations
Built-in compliance and audit trails by construction
Runs well on local models with deterministic scoping
Convert lengthy SOPs into verifiable executable programs
ThunderPhone
DeepClause