Siena AI
Siena AI is an artificial intelligence company. It has raised $21.7M across 2 rounds, most recently a $17.0M Series A in October 2026.
- Business Model
- B2B
- Website
- siena.cx
- Total Funding
- $21.7M
- Last Round
- $17.0M Series AOct 2026
- Rounds
- 2
Totals include recorded grants and other qualifying funding, not just equity. What counts toward funding.
Indexed holds 2 funding rounds and 2 investors for this company. The full record is or through the API.
About
Siena provides fully autonomous, end-to-end customer resolutions by integrating with help desk and commerce stacks. Siena powers hundreds of millions of conversations for brands and handles up to 80% of interactions while maintaining an average CSAT of 4.81. Its founders spent over a decade as Shopify merchants scaling ecommerce brands. Its mission is to humanize the internet by turning customer interactions into meaningful relationships.
Summary
It has raised $21.7M in total across 2 rounds, most recently a $17.0M Series A round in Oct 2026. Investors include Sierra Ventures and SuperAngel.Fund.
Tech & App Stack
1 technology or app tracked
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Funding History
Oct 2026
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Funding: Venture Round through Series A. Amounts, valuations, and investors where available.
Investors
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