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Zendesk AI Agents (formerly Ultimate.ai)

Free tier

Self-improving AI agents for customer service that learn from every resolution

Free tier available·All audiences·Powered by Zendesk (proprietary AI)·API available
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Key strengths

Resolution Learning Loop that continuously self-improves from every interactionOmnichannel support across messaging, email, voice, and third-party platformsNo-code natural language workflow building — no rigid scripts requiredBuilt-in automated QA to audit every AI interaction at scaleDeep integration with existing systems including legacy environments
Free tier + paid plans
San Francisco, USA
Founded 2017
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Zendesk AI Agents are built on Zendesk's Resolution Platform and powered by proprietary AI that reasons through multi-intent, multi-step workflows described in natural language. They connect to external knowledge sources (Help Center, Google Drive, PDFs), orchestrate actions across CRM, ticketing, and legacy systems via APIs and pre-built integrations, and include built-in automated QA scoring for every resolved interaction. The platform also supports the Forethought integration, enabling deployment of self-improving agents on top of existing service stacks without migration. Developers can extend agents to any non-Zendesk environment through flexible connectors and an open API surface.