An index of frontier and emerging AI labs.
Foundation models & agents
Customer-experience AI agents. Founded by Bret Taylor (former Salesforce co-CEO, OpenAI board chair) and Clay Bavor.
| Name | Sierra |
|---|---|
| Space | Foundation models & agents |
| Founded | 2023 |
| Latest valuation | $15B |
| Stage | — |
| Status | active |
| HQ | San Francisco |
| Founders | Bret Taylor, Clay Bavor |
| Website | https://sierra.ai |
| Careers | https://sierra.ai/careers |
| — | |
| X / Twitter | — |
| Date | Round | Amount ($M) | Valuation | Confidence | Source |
|---|---|---|---|---|---|
| — | — | — | $15B | reported | — |
No founders recorded yet. Submit info.
| Date | Type | Title | Source |
|---|---|---|---|
| 2026-06-14 | added | Sierra added to tracker Latest valuation: $15B. | — |
No sources cited.
| Lab | Valuation | Founded |
|---|---|---|
| Perplexity | $20B | 2022 |
| MiniMax | ~$11.5B | 2021 |
| StepFun | $10B | 2023 |
| Zhipu AI | ~$6.6B (mkt cap) | 2019 |
| Hark | $6B | 2025 |
| Baichuan AI | ~$2.7B | 2023 |
| H (The H Company) | $2B | 2024 |
| Decagon | ~$1.5B | 2023 |