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Startups & Venture·October 7, 2026·1 min read

Siena raises $17M Series A to build AI agents for consumer brands

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Agentic CX is getting its own specialist stack—$17M into Siena is a bet that brands will want vertically tuned agents rather than generic chatbots. If you run consumer support or ecommerce, you should be testing vendor options now and deciding where you want deep integration versus keeping data and orchestration in-house.