Sierra valuation, funding and investors
Sierra works in AI customer experience solutions development, based in San Francisco, United States. Founded in 2018, it has about 956 employees.
- Last round
- Growth · $950M · May 2026
- Valuation at last round
- $15.80B
- Headcount
- 956 · growing
- Grade
- A
- Founded
- 2018
Sierra valuation today
VCMC values Sierra at $17.0B today, with a range of $13.7B to $21.1B and a grade of A. The valuation starts from its last funding round, a growth round in May 2026.
Valuation by date (110 rows)
Each point is what the model would have shown on that date, using only what was known then; before its first round, a company is valued as a startup because it later raised.
| Date | Valuation | Range | Predicted in 1 yr | Phase | Headcount | Trend | Grade | Winding-down probability |
|---|---|---|---|---|---|---|---|---|
| 1 Jan 2018 | $8.90M | $3.24M – $24.4M | $12.2M (+37%) | before first round | – | unknown | D | 0% |
| 1 Feb 2018 | $9.14M | $3.33M – $25.1M | $12.5M (+37%) | before first round | – | unknown | D | 0% |
| 1 Mar 2018 | $9.36M | $3.41M – $25.7M | $12.8M (+37%) | before first round | – | unknown | D | 0% |
| 1 Apr 2018 | $9.62M | $3.50M – $26.4M | $13.2M (+37%) | before first round | – | unknown | D | 0% |
| 1 May 2018 | $9.87M | $3.59M – $27.1M | $13.5M (+37%) | before first round | – | unknown | D | 0% |
| 1 Jun 2018 | $10.1M | $3.69M – $27.8M | $13.9M (+37%) | before first round | – | unknown | D | 0% |
| 1 Jul 2018 | $10.4M | $3.79M – $28.6M | $14.3M (+37%) | before first round | – | unknown | D | 0% |
| 1 Aug 2018 | $10.7M | $3.89M – $29.4M | $14.4M (+35%) | before first round | – | unknown | D | 0% |
| 1 Sep 2018 | $11.0M | $4.00M – $30.2M | $14.5M (+32%) | before first round | – | unknown | D | 0% |
| 1 Oct 2018 | $11.3M | $4.10M – $30.9M | $14.7M (+30%) | before first round | – | unknown | D | 0% |
| 1 Nov 2018 | $11.6M | $4.21M – $31.8M | $14.8M (+28%) | before first round | – | unknown | D | 0% |
| 1 Dec 2018 | $11.9M | $4.32M – $32.6M | $14.9M (+26%) | before first round | – | unknown | D | 0% |
| 1 Jan 2019 | $12.2M | $4.44M – $33.5M | $15.1M (+24%) | before first round | – | unknown | D | 0% |
| 1 Feb 2019 | $12.5M | $4.56M – $34.4M | $15.2M (+21%) | before first round | – | unknown | D | 0% |
| 1 Mar 2019 | $12.8M | $4.67M – $35.3M | $15.3M (+19%) | before first round | – | unknown | D | 0% |
| 1 Apr 2019 | $13.2M | $4.80M – $36.2M | $15.5M (+17%) | before first round | – | unknown | D | 0% |
| 1 May 2019 | $13.5M | $4.93M – $37.2M | $15.6M (+15%) | before first round | – | unknown | D | 0% |
| 1 Jun 2019 | $13.9M | $5.06M – $38.2M | $15.8M (+13%) | before first round | – | unknown | D | 0% |
| 1 Jul 2019 | $14.3M | $5.19M – $39.2M | $15.9M (+11%) | before first round | – | unknown | D | 0% |
| 1 Aug 2019 | $14.4M | $5.25M – $39.6M | $16.0M (+11%) | before first round | – | unknown | D | 0% |
| 1 Sep 2019 | $14.5M | $5.29M – $39.9M | $16.2M (+11%) | before first round | – | unknown | D | 0% |
| 1 Oct 2019 | $14.7M | $5.34M – $40.3M | $16.3M (+11%) | before first round | – | unknown | D | 0% |
| 1 Nov 2019 | $14.8M | $5.39M – $40.7M | $16.5M (+11%) | before first round | – | unknown | D | 0% |
| 1 Dec 2019 | $14.9M | $5.44M – $41.0M | $16.6M (+11%) | before first round | – | unknown | D | 0% |
| 1 Jan 2020 | $15.1M | $5.49M – $41.4M | $16.8M (+11%) | before first round | – | unknown | D | 0% |
| 1 Feb 2020 | $15.2M | $5.54M – $41.8M | $16.9M (+11%) | before first round | – | unknown | D | 0% |
| 1 Mar 2020 | $15.3M | $5.59M – $42.1M | $17.1M (+11%) | before first round | – | unknown | D | 0% |
| 1 Apr 2020 | $15.5M | $5.64M – $42.5M | $17.2M (+11%) | before first round | – | unknown | D | 0% |
| 1 May 2020 | $15.6M | $5.69M – $42.9M | $17.4M (+11%) | before first round | – | unknown | D | 0% |
| 1 Jun 2020 | $15.8M | $5.74M – $43.3M | $17.6M (+11%) | before first round | – | unknown | D | 0% |
| 1 Jul 2020 | $15.9M | $5.79M – $43.7M | $17.7M (+11%) | before first round | – | unknown | D | 0% |
| 1 Aug 2020 | $16.1M | $5.84M – $44.1M | $17.9M (+11%) | before first round | – | unknown | D | 0% |
| 1 Sep 2020 | $16.2M | $5.90M – $44.5M | $18.0M (+11%) | before first round | – | unknown | D | 0% |
| 1 Oct 2020 | $16.3M | $5.95M – $44.9M | $18.2M (+11%) | before first round | – | unknown | D | 0% |
| 1 Nov 2020 | $16.5M | $6.00M – $45.3M | $18.4M (+11%) | before first round | – | unknown | D | 0% |
| 1 Dec 2020 | $16.6M | $6.06M – $45.7M | $18.5M (+11%) | before first round | – | unknown | D | 0% |
| 1 Jan 2021 | $16.8M | $6.11M – $46.1M | $18.7M (+11%) | before first round | – | unknown | D | 0% |
| 1 Feb 2021 | $16.9M | $6.17M – $46.5M | $18.8M (+11%) | before first round | – | unknown | D | 0% |
| 1 Mar 2021 | $17.1M | $6.22M – $46.9M | $19.0M (+11%) | before first round | – | unknown | D | 0% |
| 1 Apr 2021 | $17.2M | $6.28M – $47.4M | $19.1M (+11%) | before first round | – | unknown | D | 0% |
| 1 May 2021 | $17.4M | $6.33M – $47.8M | $19.2M (+11%) | before first round | – | unknown | D | 0% |
| 1 Jun 2021 | $17.6M | $6.39M – $48.2M | $19.4M (+10%) | before first round | – | unknown | D | 0% |
| 1 Jul 2021 | $17.7M | $6.45M – $48.6M | $19.5M (+10%) | before first round | – | unknown | D | 0% |
| 1 Aug 2021 | $17.9M | $6.51M – $49.1M | $19.7M (+10%) | before first round | – | unknown | D | 0% |
| 1 Sep 2021 | $18.0M | $6.57M – $49.5M | $19.8M (+10%) | before first round | – | unknown | D | 0% |
| 1 Oct 2021 | $18.2M | $6.62M – $50.0M | $20.0M (+10%) | before first round | – | unknown | D | 0% |
| 1 Nov 2021 | $18.4M | $6.68M – $50.4M | $20.1M (+10%) | before first round | – | unknown | D | 0% |
| 1 Dec 2021 | $18.5M | $6.74M – $50.9M | $20.3M (+9%) | before first round | – | unknown | D | 0% |
| 1 Jan 2022 | $18.7M | $6.81M – $51.4M | $20.4M (+9%) | before first round | – | unknown | D | 0% |
| 1 Feb 2022 | $18.8M | $6.86M – $51.7M | $20.6M (+9%) | before first round | – | unknown | D | 0% |
| 1 Mar 2022 | $19.0M | $6.90M – $52.1M | $20.7M (+9%) | before first round | – | unknown | D | 0% |
| 1 Apr 2022 | $19.1M | $6.96M – $52.5M | $20.9M (+9%) | before first round | – | unknown | D | 0% |
| 1 May 2022 | $19.2M | $7.01M – $52.9M | $21.0M (+9%) | before first round | – | unknown | D | 0% |
| 1 Jun 2022 | $19.4M | $7.06M – $53.3M | $21.2M (+9%) | before first round | – | unknown | D | 0% |
| 1 Jul 2022 | $19.5M | $7.11M – $53.7M | $21.3M (+9%) | before first round | – | unknown | D | 0% |
| 1 Aug 2022 | $19.7M | $7.16M – $54.1M | $21.5M (+9%) | before first round | – | unknown | D | 0% |
| 1 Sep 2022 | $19.8M | $7.22M – $54.5M | $21.7M (+9%) | before first round | – | unknown | D | 0% |
| 1 Oct 2022 | $20.0M | $7.27M – $54.9M | $21.8M (+9%) | before first round | – | unknown | D | 0% |
| 1 Nov 2022 | $20.1M | $7.32M – $55.3M | $22.0M (+9%) | before first round | – | unknown | D | 0% |
| 1 Dec 2022 | $20.3M | $7.38M – $55.7M | $22.1M (+9%) | before first round | – | unknown | D | 0% |
| 1 Jan 2023 | $20.4M | $7.43M – $56.1M | $22.3M (+9%) | before first round | – | unknown | D | 0% |
| 1 Feb 2023 | $20.6M | $7.49M – $56.5M | $22.5M (+9%) | before first round | – | unknown | D | 0% |
| 1 Mar 2023 | $20.7M | $7.54M – $56.9M | $22.6M (+9%) | before first round | – | unknown | D | 0% |
| 1 Apr 2023 | $20.9M | $7.60M – $57.3M | $22.8M (+9%) | before first round | – | unknown | D | 0% |
| 1 May 2023 | $21.0M | $7.65M – $57.7M | $23.0M (+9%) | before first round | – | unknown | D | 0% |
| 1 Jun 2023 | $21.2M | $7.71M – $58.2M | $23.1M (+9%) | before first round | – | unknown | D | 0% |
| 1 Jul 2023 | $21.3M | $7.77M – $58.6M | $23.3M (+9%) | before first round | – | unknown | D | 0% |
| 1 Aug 2023 | $21.5M | $7.82M – $59.0M | $23.3M (+8%) | before first round | – | unknown | D | 0% |
| 1 Sep 2023 | $21.7M | $7.88M – $59.5M | $23.3M (+8%) | before first round | – | unknown | D | 0% |
| 1 Oct 2023 | $21.8M | $7.94M – $59.9M | $23.3M (+7%) | before first round | – | unknown | D | 0% |
| 1 Nov 2023 | $22.0M | $8.00M – $60.4M | $23.3M (+6%) | before first round | – | unknown | D | 0% |
| 1 Dec 2023 | $22.1M | $8.06M – $60.8M | $23.3M (+5%) | before first round | – | unknown | D | 0% |
| 1 Jan 2024 | $22.3M | $8.12M – $61.3M | $23.3M (+5%) | before first round | – | unknown | D | 0% |
| 1 Feb 2024 | $22.5M | $8.18M – $61.7M | $23.3M (+4%) | before first round | – | unknown | D | 0% |
| 1 Mar 2024 | $25.0M | $9.11M – $68.8M | $21.8M (-13%) | before first round | 30 | unknown | D | 0% |
| 1 Apr 2024 | $25.2M | $9.18M – $69.3M | $21.4M (-15%) | before first round | 30 | unknown | D | 0% |
| 1 May 2024 | $25.4M | $9.25M – $69.8M | $20.9M (-18%) | before first round | 30 | unknown | D | 0% |
| 1 Jun 2024 | $25.6M | $9.32M – $70.3M | $20.5M (-20%) | before first round | 30 | unknown | D | 0% |
| 1 Jul 2024 | $25.8M | $9.38M – $70.8M | $20.1M (-22%) | before first round | 30 | unknown | D | 0% |
| 1 Aug 2024 | $25.2M | $9.08M – $70.2M | $19.7M (-22%) | before first round | 30 | unknown | D | 0% |
| 1 Sep 2024 | $24.7M | $8.78M – $69.6M | $19.3M (-22%) | before first round | 30 | unknown | D | 0% |
| 1 Oct 2024 | $24.2M | $8.50M – $69.0M | $18.9M (-22%) | before first round | 30 | unknown | D | 0% |
| 29 Oct 2024 | $4.5B | $3.9B – $5.7B | $5.0B (+10%) | after a round | 30 | unknown | A | 0% |
| 1 Nov 2024 | $4.5B | $3.9B – $5.7B | $5.0B (+10%) | after a round | 30 | unknown | A | 0% |
| 1 Dec 2024 | $4.5B | $3.9B – $5.7B | $5.0B (+9%) | after a round | 30 | unknown | A | 0% |
| 1 Jan 2025 | $4.6B | $3.9B – $5.7B | $5.0B (+8%) | after a round | 30 | unknown | A | 0% |
| 1 Feb 2025 | $4.6B | $3.9B – $5.7B | $5.0B (+7%) | after a round | 30 | unknown | A | 0% |
| 1 Mar 2025 | $4.6B | $3.9B – $5.7B | $5.0B (+6%) | after a round | 30 | unknown | A | 0% |
| 1 Apr 2025 | $4.7B | $3.9B – $5.7B | $5.0B (+6%) | after a round | 30 | unknown | A | 0% |
| 1 May 2025 | $4.7B | $3.9B – $5.7B | $5.0B (+5%) | after a round | 30 | unknown | A | 0% |
| 1 Jun 2025 | $4.8B | $3.9B – $5.7B | $5.0B (+4%) | after a round | 30 | unknown | A | 0% |
| 1 Jul 2025 | $4.8B | $3.9B – $5.7B | $5.0B (+3%) | after a round | 30 | unknown | A | 0% |
| 1 Aug 2025 | $4.8B | $3.9B – $5.7B | $5.0B (+2%) | after a round | 30 | unknown | A | 0% |
| 1 Sep 2025 | $4.9B | $3.9B – $5.7B | $5.0B (+2%) | after a round | 368 | growing | A | 0% |
| 5 Sep 2025 | $10.0B | $8.7B – $12.7B | $11.0B (+10%) | after a round | 368 | unknown | A | 0% |
| 1 Oct 2025 | $10.1B | $8.7B – $12.7B | $11.0B (+9%) | after a round | 368 | unknown | A | 0% |
| 1 Nov 2025 | $10.2B | $8.7B – $12.7B | $11.0B (+8%) | after a round | 368 | unknown | A | 0% |
| 1 Dec 2025 | $10.2B | $8.7B – $12.7B | $11.0B (+8%) | after a round | 368 | unknown | A | 0% |
| 1 Jan 2026 | $10.3B | $8.7B – $12.7B | $11.0B (+7%) | after a round | 368 | unknown | A | 0% |
| 1 Feb 2026 | $10.8B | $8.7B – $14.0B | $12.2B (+12%) | after a round | 588 | growing | A | 0% |
| 1 Mar 2026 | $11.0B | $8.7B – $14.0B | $12.2B (+11%) | after a round | 588 | growing | A | 0% |
| 1 Apr 2026 | $11.2B | $8.7B – $14.0B | $12.2B (+9%) | after a round | 588 | growing | A | 0% |
| 1 May 2026 | $11.8B | $8.7B – $14.8B | $12.9B (+9%) | after a round | 748 | growing | A | 0% |
| 5 May 2026 | $15.8B | $13.7B – $20.0B | $17.4B (+10%) | after a round | 748 | growing | A | 0% |
| 1 Jun 2026 | $15.9B | $13.7B – $20.0B | $17.4B (+9%) | after a round | 748 | growing | A | 0% |
| 1 Jul 2026 | $16.0B | $13.7B – $20.0B | $17.4B (+8%) | after a round | 748 | growing | A | 0% |
| 1 Aug 2026 | $16.3B | $13.7B – $20.7B | $18.0B (+10%) | after a round | 883 | growing | A | 0% |
| 1 Sep 2026 | $16.6B | $13.7B – $21.1B | $18.3B (+11%) | after a round | 956 | growing | A | 0% |
| 1 Oct 2026 | $16.8B | $13.7B – $21.1B | $18.3B (+9%) | after a round | 956 | growing | A | 0% |
| 24 Oct 2026 | $17.0B | $13.7B – $21.1B | $18.3B (+8%) | after a round | 956 | growing | A | 0% |
Key facts about Sierra
- Founded
- 2018
- Headquarters
- San Francisco, United States
- Employees
- about 956 +160% in a year
- Total raised
- $1.48B
- Funding rounds
- 3
- Last round
- Growth Equity May 2026
Sierra was founded in 2018 by Bret Taylor and Clay Bavor.
Sierra funding history
Sierra has 3 funding rounds on record, from Oct 2024 to May 2026, $1.48B in total. The latest disclosed valuation is $15.80B post-money (Growth Equity, May 2026).
Growth Equity 4 May 2026
Led by Tiger Global, GV.
Sources: techstartups.com, techcrunch.com, cnbc.com and 1 more
$950M
$15.80B post-money
Growth Equity 4 Sep 2025
Led by Greenoaks; with Sequoia Capital, Benchmark.
Sources: sierra.ai, techcrunch.com, siliconangle.com and 2 more
$350M
$10.00B post-money
Growth Equity 28 Oct 2024
Led by Greenoaks; with ICONIQ Capital, Thrive Capital.
Sources: techfundingnews.com, techcrunch.com, axios.com and 3 more
$175M
$4.50B post-money
Sierra investors
7 investors have backed Sierra; Greenoaks, GV and Tiger Global led at least one round.
- Greenoaks lead, 2 rounds
- GV lead
- Tiger Global lead
- Benchmark
- ICONIQ Capital
- Sequoia Capital
- Thrive Capital
What Sierra does
Sierra works in software development services, with 14 recorded offerings and customers in financial services, healthcare, telecommunications and media.
Sierra Technologies, Inc. is an American software company that develops and manages AI-powered customer experience solutions. The company provides AI agents for customer interactions across multiple channels, including chat, SMS, WhatsApp, email, voice, and messaging platforms. Sierra also offers a platform for building and managing AI agents, as well as tools for insights and live assistance. Its services are designed to support businesses in sectors such as financial services, healthcare, telecommunications, media, travel and hospitality, retail, and technology.
Description from Veridion's company data.
Products and services
- AI Customer Experience Solutions Development
- AI Agent Platform Development
- Conversational AI Solutions Development
- Generative AI Solutions Development
- AI Agent Management Services
- AI Platform Integration Services
- AI Customer Interaction Solutions Development
- AI Insights and Analytics Services
- Voice AI Solutions Development
- Live Assist AI Services
- Multi-Channel Customer Engagement Solutions
- Industry-Specific AI Solutions Development
- AI Technology Consulting Services
- AI Compliance and Security Solutions Development
Markets
- Financial Services
- Healthcare
- Telecommunications
- Media
- Travel and Hospitality
- Retail and Consumer Goods
- Technology
Technology
- Generative AI
- Conversational AI
Business model
- Business-to-Business
- Software-as-a-Service
- Enterprise
Industry codes (NAICS)
- 513210 Software Publishers 70% match
- 541511 Custom Computer Programming Services 30% match
Questions about Sierra
What is Sierra worth?
Valuation $17.0B (range $13.7B to $21.1B), as of 24 Oct 2026. The last disclosed valuation was $15.80B (Growth Equity, May 2026).
Has Sierra raised money?
Sierra has 3 funding rounds on record, from Oct 2024 to May 2026, $1.48B in total. The latest disclosed valuation is $15.80B post-money (Growth Equity, May 2026).
Who has invested in Sierra?
Greenoaks, GV, Tiger Global, Benchmark, ICONIQ Capital and Sequoia Capital, and 1 more. Lead investors include Greenoaks, GV and Tiger Global.
How many people work at Sierra?
About 956, up 160% over the last year. Headcount grew from 30 in Mar 2024 to 956 in Aug 2026.
What does Sierra do?
Sierra works in software development services, with 14 recorded offerings and customers in financial services, healthcare, telecommunications and media. Its main offerings are AI customer experience solutions development, AI agent platform development and conversational AI solutions development.
When was Sierra founded, and where is it based?
Sierra was founded in 2018 and is based in San Francisco, United States. It has about 956 employees, up 160% over the last year.