4 signals in the last 90 days
Side-by-Side Comparison
| Metric | ada CX | Sierra |
|---|---|---|
| Founded | ||
| Founded | 2016 older | 2023 |
| Headquarters | ||
| Headquarters | Toronto, Canada | San Francisco, United States |
| Employees | ||
| Employees | 744 | 759 |
| Industry | ||
| Industry | AI, Messaging and Telecommunications, SaaS | AI, Enterprise Software, SaaS |
| Funding Stage | ||
| Funding Stage | Grant | Series E |
| Total Funding | ||
| Total Funding | $197.25M | $1.59B |
| Funding Rounds | ||
| Funding Rounds | 8 | 4 |
| Services | ||
| Services | AI Agent Deployment, Customer Service Automation, AI Integration Across Channels, CX Performance Optimization, Agentic Playbooks for SOPs, ACX Platform and Practice | AI Agents Development, Channel Unification, Customer Experience Optimization, Performance Monitoring and Testing, Agent Data Platform Integration |
| Target Customers | ||
| Target Customers | Enterprises, Ecommerce Businesses, Financial Institutions, Gaming Industry, Insurance Companies, Technology Companies, Travel and Hospitality Firms | Financial Services, Healthcare Providers, Telecommunications, Media Companies, Travel and Hospitality, Retail and Consumer Goods |
| Taxonomy | ||
| Taxonomy | AI Customer ServiceChatbotsConversational AICustomer SupportCustomer Service AutomationVirtual Assistants +6 | Conversational AIBusiness ChallengesEnterprise AI SolutionsAI IntegrationBusiness WorkflowsStreamlined Interactions +7 |
| Website | ||
| Website | ada.cx | sierra.ai |
About ada CX
ada CX, founded in 2016 and headquartered in Canada, positions itself as a transformative player in the AI customer service landscape. With its slogan, "We make customer service extraordinary for everyone," the company aligns its mission with providing exceptional customer experiences through advanc...
About Sierra
Sierra is carving a niche in the AI industry with its innovative platform, described succinctly by its slogan: "Sierra is the conversational AI platform for businesses." Founded in 2023, Sierra aims to enhance customer interactions by helping businesses create more engaging and human-like experience...
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Compiled from the BounceWatch company index. We last looked at ada CX on 23 Mar 2026, and Sierra on 28 Mar 2026. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.
