Voiceflow

Voiceflow is a web-based, no-code platform for product teams, designers, agencies, and enterprises that need to build and deploy conversational AI agents for chat and voice experiences.

Key capabilities include:

• Drag-and-drop agent builder for conversational flows, plus support for multiple agents per workspace (plan-dependent).
• Knowledge base grounding to connect sources to an agent and answer questions with organizational context.
• Multi-LLM support (including OpenAI and Anthropic) to avoid model lock-in and tune behavior via global instructions and guardrails.
• Testing and operations with test personas, version history and rollback, and an analytics dashboard for monitoring performance.

Pricing: Freemium. Free plan ($0/month) includes 1 editor seat and 2 agents; Pro ($60/month) includes 2 editor seats and up to 20 agents; Business ($150/month) includes 5 editor seats and unlimited agents; Enterprise is custom. Additional charges can apply for AI token usage, voice calls, and extra editor seats.

Notable for combining chat and phone voice agents, team collaboration and access controls, and observability-oriented tooling for iterating on production agents across multiple channels via web embed and API-based deployments.