Siena AI
Category: AI Agents
Siena AI builds empathic AI agents for consumer brands, a shared 'Agent of Record' that unifies customer context across support, shopping, social and voice. Siena AI was founded in 2023. The company is led by Andrei Negrau. Based in New York, United States. Team size: 51-100. Total funding raised: $29.7M. Latest round: Series A. Key investors include York IE, Joyance Partners, Aglaé Ventures, Sierra Ventures, Super Angel Fund.
- Founded
- 2023
- Headquarters
- New York, United States
- Team size
- 51-100
- Total funding
- $29.7M
Value proposition
Siena combines a brand's systems of record (orders, subscriptions, reviews, loyalty, knowledge) with real customer conversations. This creates shared customer context and memory that AI agents and human teams draw on. Siena handles up to 80% of interactions autonomously with an average CSAT of 4.81.
Products and solutions
Customer Service Agent, Shopping Agent, Social Agent, Reviews Agent, Voice, QA Agent, Topics Explorer (voice of customer), Ask Siena (insights agent for brand operators, available in Slack), Siena Intelligence, Siena Memory, Docs (brand knowledge OS), Video understanding
Unique value
One Agent of Record per brand: customer understanding carries across support, shopping, social and phone. Insights from those interactions reach product and operations teams.
Target customer
Mid-market and enterprise consumer and DTC ecommerce brands, primarily Shopify merchants
Industries served
Ecommerce, DTC consumer brands, apparel, CPG, retail
Technology advantage
An agentic brand intelligence layer and persistent customer memory built on hundreds of millions of automated interactions. Deep integrations with Shopify, Zendesk, Yotpo and Recharge. Context is exposed to other tools through MCP.
How they differentiate
Siena focuses on commerce and consumer brands with empathic, brand-DNA-tuned agents. Unlike support-only tools, it extends a single shared customer context into shopping, social and voice-of-customer analytics.
Main competitors
Gorgias AI Agent, Decagon, Sierra, Richpanel
Key partnerships
Integrations with Shopify, Zendesk, Yotpo and Recharge, partner program, PartnerHero and Flip CX collaboration
Notable customers
SPANX, FIGS, HexClad, Comfrt, Eskiin, Coterie
Major milestones
2023: founded. 2023-11: $4.7M seed round. 2024-09: $6M seed extension led by Aglaé Ventures. 2026: launched the Ask Siena and Docs products. 2026-10: $17M Series A led by York IE, bringing total funding to $29.7M, to build the Agent of Record platform.
Growth metrics
Hundreds of brand customers. Hundreds of millions of customer interactions automated. Up to 80% of interactions handled autonomously, with an average CSAT of 4.81.
Market positioning
Vertical AI customer experience platform for consumer brands, positioned between helpdesk-native AI (Gorgias, Zendesk) and enterprise horizontal agents (Sierra, Decagon).
Geographic focus
United States primarily, serving global ecommerce brands; distributed team with Romanian roots
About Andrei Negrau
Romanian-born co-founder who, with co-founder Lisa Popovici, spent over a decade as a Shopify merchant scaling ecommerce brands before founding Siena in 2023.
Latest news about Siena AI
More AI Agents companies
Official website: https://www.siena.cx