Managed agent runtime with durable sessions and tools for building applications
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
Personal: Free tier with daily free usage and pay-as-you-go credits. Pro: $20/mo. Team: $20/seat/mo. Enterprise: Custom pricing. Compute: $0.10/hr while active, $0 when idle.
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
Managed agent runtime with durable sessions
Dynamic workflows with model-generated JavaScript
Execution tracing through Langfuse
Web search capability
Decision tool with choice, score and questions
MCP and HTTP integrations
Scheduled agents with recurring or one-time execution
Platform connections for existing accounts
Line-item task receipts showing all costs
Support for multiple model providers
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
Transparent per-task pricing with detailed itemized receipts showing every dollar
Flexible model payment: bring your own key, subscription, or pay at-cost rates
Usage-based billing separate from subscription plans
Free tier with no credit card required
OpenAI-compatible API using official client
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
Rebyte
ThunderPhone