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Siena raises $17M Series A to expand its Agent of Record platform for consumer brands. 4:30 am, PT, October 6, 2026 Funding will expand the shared infrastructure consumer brands use to support, sell to and understand their customers NEW YORK-(BUSINESS WIRE)-October 6, 2026- Siena, the AI-driven customer experience platform trusted by hundreds of leading consumer brands to automate customer interactions and turn them into meaningful relationships, today announced the close of a $17 million Series A led by York IE, with participation from Joyance Ventures and existing investors Aglaé Ventures and Sierra Ventures. This investment brings Siena's total funding to $29.7 million. Siena began with an empathic AI customer service agent and is expanding as the Agent of Record for consumer brands: a shared intelligence layer that gives customer-facing agents, internal agents and human teams a common understanding of the customer. Siena plans to use the new capital to build more autonomous agents and expand the infrastructure consumer brands use to serve customers and grow revenue. "Siena is rebuilding the customer experience stack around customer intelligence, connecting how brands serve, sell to and retain their customers," said Tom Holahan, General Partner, York IE. "We believe Siena can become as essential to running a brand as its commerce platform." Siena's Shopping Agent and Social Agent work around the clock, answering questions, recommending products and closing purchases directly inside a conversation. On social, that includes moderation, community engagement and customer support across comments and DMs, including product questions under paid campaigns. Siena's voice agents draw on the same customer context. A shared inbox lets human and AI teams work side by side. Enterprise controls include A/B testing on live traffic, a Quality Suite that grades agent performance and Autopilot to help build agents faster. Hundreds of consumer brands, including FIGS, SPANX, Comfrt and HexClad, currently work with Siena. Across its customer deployments, Siena automates up to 80% of customer interactions. Examples of customer results include: * Eskiin's Social Agent lifted weekly comment engagement by 50% and freed up 15 hours a week for its social lead. * Coterie turned a customer-analysis project that used to take weeks into a ten-minute query with Ask Siena, using it to analyze customer feedback. * At SPANX, Siena Intelligence traced a spike in shipping complaints to a single carrier issue affecting nearly every delivery in one region, helping the team pinpoint the fix quickly. As brands bring agents into support, shopping, social, messaging and voice, the challenge is making sure what one learns reaches the next. A service conversation can reveal why a customer is considering leaving, what matters to them or what would help them buy with confidence. When that understanding stays in one channel or team, the next interaction starts without it. "Support, shopping and social may be different departments inside a company," said Lisa Popovici, cofounder and President of Siena. "To the customer, they're one relationship." Siena's Agent of Record platform brings together and enriches conversations, orders, subscriptions, reviews, loyalty data and brand knowledge in Siena Intelligence. A customer's explanation for returning a product can inform their next shopping recommendation. Across customers, those explanations can reveal a recurring product issue. As agents handle more interactions, they add what customers asked for, what action was taken and whether it helped. Each new Siena agent can draw on the customer context the brand has already accumulated and contribute what it learns. That customer understanding becomes a shared asset across the entire customer journey, available to every Siena agent and the teams running the brand. Customer insights teams, analysts, QA teams and executives use Siena Intelligence to investigate customer needs and operational problems. Marketers use those insights to shape campaigns, so what the brand learns while serving customers informs how it reaches them next. "We started by helping brands take care of their customers," said Andrei Negrau, cofounder and CEO of Siena. "Today, brands use Siena to help customers buy and guide decisions across the business. When an agent learns why someone buys or leaves, that understanding should travel with the customer and reach the people running the brand. The same understanding that helps an agent resolve a conversation can help a founder decide what to build next. Our ambition is for agents to manage the entire customer journey with that context." About Siena Siena is the Agent of Record for consumer brands, bringing shared customer Intelligence to agents and human teams across support, shopping, social, voice, retention and customer insights. Founded in 2023, Siena works with hundreds of brands including FIGS, Grüns, SPANX, HexClad, Comfrt, Caraway and Kitsch. Learn more about Siena, including its open roles, here: https://www.siena.cx/careers Media Contact Danielle Dougan York IE for Siena [email protected]

Siena raises $17M Series A to expand its agent of record platform for consumer brands. [#item_full_content]NEW YORK-(BUSINESS WIRE)-Siena, the AI-driven customer experience platform trusted by hundreds of leading consumer brands to automate customer interactions and turn them into meaningful relationships, today announced the close of a $17 million Series A led by York IE, with participation from Joyance Ventures and existing investors Aglaé Ventures and Sierra Ventures. This investment brings Siena's total funding to $29.7 million. Siena began with an empathic AI customer service agent and is exp

Siena AI review (2026): pricing, fit, and alternatives. A competitor's honest review of Siena AI: what it does well, the $750 per month plus $0.90 per ticket pricing as of July 2026, who it fits, and the alternatives. Siena AI Pricing Alternatives Ezra Klijnsma Founder of Nousu, building AI support agents for online stores Siena AI is an autonomous support agent for larger ecommerce brands. It resolves tickets end to end and does it well. Pricing as of July 2026: a $750 per month platform fee plus $0.90 per automated ticket, with the final quote settled on a sales call. Strong product at an enterprise price, and Shopify-first. The disclosure first: Nousu competes with Siena, so this is a competitor's read. Nousu has tried to keep it fair, and every number below carries a source and a date. Where a claim comes from Siena's own marketing, Nousu say so. What Siena AI does. Siena sells an AI agent built for ecommerce support, aimed at DTC brands. The pitch is autonomy: the agent does not just answer, it acts. Per Siena's site, it can update addresses, generate return labels, issue refunds, send replacements, and manage subscriptions (skip, pause, swap) inside a single conversation. Siena also claims it can handle up to 80% of customer interactions automatically. That last number is marketing, so treat it as a ceiling under ideal conditions rather than a promise. The other thing Siena is known for is brand voice. The product builds "AI Personas" on your tone and customer language, per Siena's site, and this is the part reviewers praise most consistently. If your brand lives or dies on sounding like itself in every reply, Siena has put real work into exactly that problem. What siena does well. Three things stand out, and Nousu say this as a competitor. It executes. Refunds, labels, replacements, subscription changes: these are actions in the store, not paragraphs about policy. Most of the market still stops at answering. Siena committed to finishing the work early, and it shows in how the product is built. The brand voice work is credible. Siena publishes customer numbers on its own site, such as Spanx handling 50% of conversations at 90%+ CSAT and Coterie at 65% automation (per siena.cx, July 2026). Those are vendor-published case numbers, so read them the way you would read any vendor's case numbers. But the pattern in independent reviews matches: customers rarely complain that Siena sounds like a robot. Onboarding is managed. The pricing page lists expert onboarding plus dedicated Slack support (per siena.cx/pricing, July 2026). You are buying a service relationship, not just software. For a larger team that wants a partner on the hook, that is worth something. Siena AI pricing: the reality. Here is the structure as published on siena.cx/pricing, checked July 19, 2026. A $750 per month platform fee for access to the core engine. On top of that, $0.90 per automated ticket. The page then asks you to share details so sales can give you accurate pricing, which means the number you actually pay is settled on a call. Run the math at a few volumes, before any negotiated discount: * 500 automated tickets a month: $750 + $450 = $1,200 per month. * 1,500 automated tickets a month: $750 + $1,350 = $2,100 per month. * 3,000 automated tickets a month: $750 + $2,700 = $3,450 per month. Notice two properties of this model. The $750 lands before the first ticket is automated. And the meter runs on success: the better the agent performs and the better your sales month goes, the higher the invoice. November is your most expensive month by design. If you want to see what this does at your own volume, next to other vendors' published rates, use its support cost calculator. Every rate in it is sourced. Who siena fits. Larger DTC brands on Shopify with real ticket volume and a support budget that starts north of $1,000 a month. At that scale the math can work: $0.90 per automated ticket is cheap against the loaded cost of a human handling the same ticket, and the platform fee dilutes into the volume. Add the managed onboarding and the brand voice depth, and you can see who Siena built this for. If that is you, take the demo. It is a serious product. Who should skip it. Stores with a support budget under roughly $500 to $1,000 a month. The platform fee alone exceeds that budget before a single ticket is automated, and no discount call changes the shape of the model. WooCommerce stores. Siena is Shopify-first; third-party reviews list Shopify and Fulfil as the supported commerce platforms as of July 2026. If your store runs on WooCommerce, the actions that make Siena worth its price are not available to you. Teams that want to buy self-serve. There is no card checkout and no published final price. If you would rather test a product this afternoon than book a call this week, the sales-led motion itself is the filter, and it is filtering you out on purpose. Siena AI alternatives. Nousu compared seven tools with sourced pricing in its ecommerce AI comparison. The short version, for the buyer who got this far: Nousu (its product) is the flat-fee option. It resolves customer questions on Shopify and WooCommerce with real actions: live order status, returns, handoffs that carry full context. Pricing is a flat €29, €79, or €149 per month sized by conversation bundle, and going over a bundle never bills overage. Self-serve, free 14-day trial, details on its pricing page. If you were priced out of Siena or you run WooCommerce, this is the gap Nousu built for. Gorgias fits Shopify-first brands that want a full helpdesk with AI on top. Its AI Agent is billed per resolved conversation on top of per-ticket helpdesk plans (per gorgias.com, July 2026), so run your volume through the math before committing. Two meters at once adds up. Tidio (Lyro) fits small stores that mainly need answers, from $32.50 per month for 50 AI conversations (per tidio.com/pricing, July 2026). Know that Lyro answers questions; its published feature set does not cover refunds or order changes. Verdict. Siena is one of the strongest autonomous agents in ecommerce, and its pricing page tells you honestly who it is for: brands with the volume to dilute a $750 monthly fee and the patience for a sales cycle. If you fit that, shortlist it. If you do not, the money you would spend on the platform fee alone buys a year of a flat-fee agent. Compare the options with sources at its seven-tool comparison and check the numbers against your own queue.