Simple, Transparent Pricing
Pay for What You Use
No hidden fees. No complicated tiers. Just simple, usage-based pricing that scales with your agents.
Token Usage
Provider Rate + 25%
Per token pricing — you pay what the LLM provider charges plus a 25% markup
- Pass-through pricing from any provider you choose
- Support for OpenAI, Anthropic, Google, and more
- Real-time usage tracking and billing
Value unlock:With Sonzai's harness, you can use low-cost models (like GPT-4o-mini) that perform at near front-tier quality — a 20x cost difference.
Active Agents
$0.50/agent/mo
Per active agent per month — only pay for agents your users actually interact with
- Active agent: Any agent with at least one user interaction during the month
- No charges for inactive or dormant agents
- Unlimited users per agent — no per-seat pricing
Example: If you have 100 agents deployed but only 20 had user interactions this month, you pay just $10 in agent fees.
Pricing Example
See how the pricing works for a typical scenario
2 active agents
@ $0.50/agent/month
$1.00
10M tokens processed
via GPT-4o-mini @ ~$0.60/M + 25%
$7.50
Total monthly cost
$8.50
Compare this to using GPT-4o directly: ~$300 for 10M tokens — without the memory, personality, and relationship features Sonzai provides.
Ready to get started?
Start building stateful AI agents with simple, transparent pricing. No credit card required to begin.
Frequently Asked Questions
What counts as an 'active agent'?
An active agent is any agent that has had at least one user interaction during the billing month. Simply deploying an agent without any user engagement doesn't incur the $0.50 charge.
Which LLM providers are supported?
We support all major providers including OpenAI, Anthropic, Google, and custom endpoints. You bring your own API keys or use our managed connections.
How is token usage calculated?
We measure all tokens processed through our harness — both input and output. The pricing is the provider's rate plus 25%. No markups on embeddings or storage.
Is there a free tier?
Yes, you can get started with up to 5 active agents and 100K tokens per month at no cost. Perfect for development and testing.