Sierra
Last verified 2026-06-17. JSON
The funding figures on this page are attributed, not sourced: a publisher is on record but no document URL is. How we mark provenance.
| Total raised | $285.0Mattributed |
|---|---|
| Latest round | series-c, $175.0M, 2024-10-28attributed |
| Founded | 2023 |
| Headquarters | US |
| Industry | ai |
| Stage | series-b+ |
| Website | sierra.ai |
Sierra builds AI agents handling enterprise customer interactions across chat, SMS, WhatsApp, email, voice, and ChatGPT, with tooling for building, optimizing, and analyzing them. It serves Rocket Mortgage, SiriusXM, Gap, Wayfair, and Brex. Sierra prices on outcomes: customers only pay when the agent successfully completes a job.
Funding rounds
| Date | Round | Amount | Lead |
|---|---|---|---|
| 2024-10-28 | series-c | $175.0M | undisclosed |
Detected tech stack
alia, cloudflare, cloudflare bot management, facebook pixel, hsts, linkedin insight tag, next.js, python, react, sanity, sanity.io, shopify
Provenance
| Fact | Status | Basis |
|---|---|---|
| Series C, $175.0M | attributed | techcrunch named as publisher. No document URL on file. |
| Total raised $285.0M | attributed | techcrunch named as publisher. No document URL on file. |
| Company existence | self-reported | sierra.ai, read 2026-06-17 |
| Description | self-reported | sierra.ai, read 2026-06-17 |
Nothing on this page is sourced yet. A sourced fact links to a document that states it.
Change history
No change recorded since records began on 2026-09-24.