Stept vs Voiceflow

Stept is an open-source customer-support platform with a shared inbox, AI agent, help center, product tours, and automation. Its AI agent can read company documents, guide visitors through an interface, and act on a page after the visitor opts in. Teams can select a model, configure the agent’s persona, and decide which tools run automatically, require approval, or stay off. Sensitive actions can require human approval; password fields are excluded, and actions are capped per run. Knowledge sources can be crawled, uploaded, or synced, then re-indexed on a schedule. The shared inbox includes assignment, snoozing, tags, notes, SLAs, macros, and team collaboration. Channels include email, Slack, Telegram, WhatsApp, Messenger, Instagram, LINE, a web widget, and API. Self-hosting is MIT-licensed and supports Postgres or SQLite, offline operation with a mock AI provider, and unlimited seats. Stept Cloud is free during early access; the listed Cloud and Business prices are marked as upcoming.

Voiceflow is a platform for building, testing, deploying, and monitoring chat and voice agents across channels and languages. Its builder combines agentic playbooks, deterministic workflows, shared instructions, and guardrails. Teams can review transcripts and call recordings, run evaluations and tests, and track analytics. Agents can reach users through a native chat widget, mobile apps, phone calls, SMS, or custom interfaces built with the Conversations API. Native integrations include Zendesk, Salesforce, HubSpot, Shopify, Airtable, Google Sheets, Gmail, and Twilio. Agents can also connect to external REST APIs, custom Functions, and MCP servers. Teams can choose from major LLM providers or bring their own model. Voiceflow says customer data is not used to train AI or machine-learning models and integrated model providers are configured for zero data retention. Its security information describes encryption at rest with customer-managed keys and encryption in transit using TLS and mTLS. The company was founded in 2019. Agencies and partners have a free-trial plan with usage-based billing; business pricing is available on request. Support includes implementation that can be self-serve or fully managed.