Compare 12 options for tasks you use Sierra for. Their feature coverage differs; check the summaries and plan details. Enterprise conversational AI agents for customer engagement
| Tool | Pricing | Score | API | Ongoing free tier | Self-hosting |
|---|---|---|---|---|---|
| Sierrathis one Enterprise conversational AI agents for customer engagement | Contact | 58 | Unknown | Unknown | No |
| Chatbase Deploy AI agents for customer conversations | Freemium | 7 | Yes | Unknown | No |
| Twig AI AI front desk agent handling customer calls and messages 24/7 | Freemium | 0 | Unknown | Unknown | No |
| Voice.ai AI voice agents and audio tools for business and creators | Freemium | 5 | Yes | Unknown | Unknown |
| Tiledesk Build and deploy AI agents across channels without code | Freemium | 11 | Unknown | Unknown | Unknown |
| Staircase AI AI-powered customer intelligence from every conversation | Contact | 0 | Yes | Unknown | No |
| Vapi Voice AI agents for enterprise customer conversations | Contact | 78 | Yes | No | No |
| OneAI AI phone agent platform for automated sales and customer service | Contact | 1 | Yes | Unknown | No |
| CircleChat Collaborate with AI agents in shared team workspaces | Paid | 2 | Unknown | Unknown | No |
| Forethought AI agents that reason through customer support | Contact | 1 | Unknown | No | No |
| Deepgram Enterprise voice AI unifying speech-to-text, text-to-speech, and agents | Freemium | 118 | Yes | Unknown | No |
| Meya Conversational AI platform for building enterprise chatbots | Freemium | 5 | Yes | Unknown | Unknown |
| Level AI Enterprise AI for automating customer service operations | Contact | 1 | Unknown | No | No |
Chatbase enables teams to build conversational AI agents that handle customer interactions across multiple channels—chat, email, voice, WhatsApp, and Slack—without writing code. The platform guides users through connecting their own data and knowledge sources, then deploying agents that can resolve support inquiries, manage sales conversations, and handle routine tasks. Built for businesses that want to scale customer engagement without technical expertise.
Twig AI's Sera is an AI-powered front desk agent that handles customer interactions across voice, email, chat, SMS, and WhatsApp. It books appointments, answers questions, qualifies leads, and routes complex issues to your team. The platform integrates with 30+ business tools including Salesforce, HubSpot, and Zendesk.
Voice.ai is a platform for creating AI-powered voice agents that automate customer calls, combined with text-to-speech, voice cloning, and voice-changing capabilities. Designed for businesses automating support interactions and content creators producing audio content. The platform supports 15+ languages with enterprise-grade security including GDPR and HIPAA compliance.
Tiledesk is an AI agent operating system that lets you automate customer interactions, lead qualification, and internal workflows through visual design. Deploy across web, WhatsApp, voice, SMS, email, and messenger without writing code. It combines conversational AI with human escalation, knowledge base retrieval, and appointment scheduling into a single platform.
Staircase AI analyzes customer conversations across email, chat, tickets, and calls to surface churn signals, expansion opportunities, and relationship risks automatically. Built for customer success teams, it surfaces actionable intelligence without manual data entry or complex setup.
Vapi is an AI voice agent platform that automates customer support, sales, and appointment scheduling at enterprise scale. Built with integrations to leading AI models like OpenAI and Anthropic, and business tools like Salesforce and HubSpot, it handles high-volume conversations with real-time monitoring and compliance controls.
OneAI automates phone-based business communications with AI agents that handle outbound prospecting, inbound support, and meeting scheduling at scale. The platform integrates with major CRMs to qualify leads, warm-transfer prospects to sales teams, and optimize calling campaigns through continuous testing. Built for sales teams and contact centers seeking improved efficiency and lead contact rates.
CircleChat brings AI agents into team collaboration spaces where they work autonomously on assigned tasks while humans maintain full oversight and approval control. The platform routes work to agents based on their declared skills, verifies output quality through independent review, and pauses risky actions for human approval. Available as cloud or self-hosted deployment.
Forethought is an enterprise platform powered by specialized AI agents designed to automate and resolve customer support tasks at scale. Unlike intent-matching systems, it uses agentic reasoning to understand context, apply business policies, and take action independently across chat, email, voice, and other channels. Built for teams managing high-volume support, it learns from your existing tickets and knowledge base to deliver personalized resolutions from day one.
Deepgram provides unified APIs for building voice-powered applications without integrating separate speech services. It handles real-time and batch transcription, natural speech synthesis, and AI-driven conversational agents across 10 languages. Trusted by enterprises including Twilio, Cloudflare, and IBM for contact center automation, podcast processing, and voice analytics.
Meya is a chatbot development platform that lets teams build, deploy, and manage customer support applications without deep AI expertise. It combines visual workflow builders with Python and YAML scripting, integrates with messaging channels (WhatsApp, Facebook Messenger, Twilio), and connects to helpdesk systems like Zendesk and Salesforce. Teams use Meya to automate support requests, handle complex workflows, and scale conversations across multiple channels.
Level AI is a platform designed for large contact centers to automate and optimize customer interactions at scale. It uses domain-specific AI models to analyze conversations, handle routine inquiries through virtual agents, and provide real-time assistance to human agents. The platform spans quality management, automated case resolution, and performance analytics across voice, chat, and email channels.