Never billed per token
Bring your own LLM key and messages are unlimited on every plan — inference runs at provider cost with zero token markup. Plans are priced by monthly active users (MAU), not tokens, so your bill stays predictable as conversations get longer.
Put a real agent in front of real users on managed Cloud.
No credit card required.
For products with a growing user base.
Higher limits for teams shipping at volume.
Security requirements, custom capacity, or a delivered production agent.
Plans differ by capacity and support — never by capability.
MAU, explained
A monthly active user is a unique person who chats with your agent at least once in the last 30 days — a rolling window, not a calendar month. In practice, MAU roughly tracks conversations — not messages.
Pricing questions
Cloud plans are priced by monthly active users (MAU), plus schema and knowledge-base document limits per tier. You are never billed per message or per token: with your own LLM key, messages are unlimited on every plan; the free demo key includes 50 messages per month.
A monthly active user is a unique person who chats with your agent at least once in the last 30 days — a rolling window, so there is no reset day. Roughly, it counts conversations, not messages. One user can send hundreds of messages and still counts once. Anonymous widget visitors are counted once using a persistent visitor id.
Yes. BYOK — bring your own key — is included on every plan with zero token markup: inference runs at your provider’s list price. Configure any provider key in the Admin Dashboard or pass it per request.
Limits, attribution, and support. Free covers up to 100 monthly active users, 2 schemas, and 25 knowledge-base documents, with a “Powered by SyntheticBrew” badge on the widget. Paid plans raise MAU, schema, and document limits, remove the attribution badge, and add email support on Pro or priority support on Business.
On the Free plan, new users are blocked once you hit the MAU limit while existing sessions continue working. On paid plans, limits are soft: you see an upgrade prompt and nothing shuts off mid-conversation. With your own LLM key, messages are never capped on any plan.
Your account downgrades to the Free plan. Your agents, schemas, and data remain — you only lose capacity above the Free plan limits.
Yes. The Free plan covers up to 100 monthly active users with no credit card and no time limit. It includes the full agent runtime — orchestration, MCP tools, knowledge bases, knowledge graphs, memory, and the REST and SSE API — limited only by MAU, schema, and document counts.
Yes. Plans differ by capacity and support, not capability: MAU, schema, and knowledge-base document limits, whether the widget carries a “Powered by SyntheticBrew” badge, and the level of support. No orchestration, tool, knowledge, or API feature is held back for a higher tier.
OpenAI, Anthropic, Google Gemini, Azure OpenAI, Ollama, OpenRouter, and any OpenAI-compatible provider such as DeepSeek or Mistral. The Model Registry ships with 14+ models and tier recommendations, and you can add custom model configurations.
Yes. Agents, tools, prompts, and schemas are configuration you can read and export through the API or the Admin Dashboard, and session history is queryable the same way. Nothing you build is locked in a format only we can read.
Start on the Free plan with your own LLM key, and pay only when your active-user count or your support requirements actually grow.