Alternatives to Sierra

Ada builds enterprise AI customer service agents that resolve support tickets across chat, email, voice, and social.

Chatbase builds no-code AI agents for customer support, sales, and product questions across chat, email, voice, and WhatsApp.

Build, deploy, and monitor production-grade AI voice and chat agents on a visual conversational AI platform.

Build real-time conversational AI voice and chat agents that listen, understand, and act in 70+ languages.

Build no-code AI agents for voice, chat, and WhatsApp on one omnichannel platform

Agentic B2B support platform that unifies Slack, Teams, email, chat, SMS, WhatsApp and phone into one inbox.

Multi-agent AI platform that resolves customer support tickets end-to-end across chat, email, voice, and Slack.

White-label AI chat and voice agents that agencies rebrand, resell, and mark up as their own product.

Pylon is an agentic B2B support platform where AI agents investigate and resolve customer issues across Slack, Teams, email, and phone.

Agentic banking AI for banks and credit unions — voice, digital, and employee agents on one governed knowledge layer

AI embedded across NICE CXone to analyze every interaction and coach agents in real time.

Decagon is an enterprise AI concierge platform for omnichannel customer support across chat, voice, and email.

Official WhatsApp Business API platform with AI chatbots, mass campaigns, and native HubSpot/Salesforce sync for LATAM-focused teams.

Freshchat delivers AI-powered live chat and chatbots for multichannel customer support.

AI customer service agent that automates up to 67% of your support conversations with human backup

Salesforce's AI layer on Customer 360 — Agentforce agents that work on the same customer records your staff use.

Genesys Cloud CX embeds AI-powered experience orchestration across voice, digital, and workforce channels for enterprise contact centers.

Enterprise voice AI agents running on Synthflow's own telephony network, from $30,000/year

Unified conversational AI agent platform for voice, chat, WhatsApp, email, and social — with 100% conversation review.

Enterprise Voice AI platform with in-house telephony and the BELL deployment framework for automating phone calls at scale.

Gainsight is a customer success platform using agentic AI to help enterprise teams retain and grow revenue.

Conduit AI runs AI chat and voice agents for hotel and short-term rental guest messaging, portals, and back-office operations.

AI-native customer service platform and CRM that tunes every conversation toward retention and revenue

AI sales agent that runs live product demos on video calls in 32 languages

NiCE Cognigy is an enterprise conversational AI platform for automating high-volume voice and chat customer service.

Parloa runs multilingual, compliant AI contact center agents that handle millions of customer conversations in any language.

AI-native Customer Experience Management platform unifying service, social, marketing, and insights for large enterprises.

Enterprise contact center AI suite that automates and augments customer interactions natively within the Five9 platform.

No-code AI chatbot builder that trains on your website, docs, and Q&A pairs in minutes and embeds with one script tag

AI agents that answer patient calls, book visits, and recover no-shows across voice, SMS, email, and web.