# Level AI vs Sierra: who uses which

On usedby, 19 companies use Level AI and 50 use Sierra. 2 companies use both, including Wayfair and Chime. Counts include every proof level, job-post signals included. Companies named on both have a confirmed or observed line on each side. Latest check 2026-10-08: 69 of 69 public lines checked.

## Side by side

|  | [Level AI](https://www.usedby.ai/tools/level-ai.md) | [Sierra](https://www.usedby.ai/tools/sierra.md) |
|---|---|---|
| Public customers | 19 | 50 |
| Confirmed | 14 | 37 |
| Observed | 5 | 13 |
| Signals (job posts) | 0 | 0 |
| Top industries of customers | Fintech & Payments (2), E-commerce & D2C (1), HR & Recruiting (1) | Fintech & Payments (5), Telecommunications (3), Banking & Mortgages (2) |
| Category | Customer Service Automation | Customer Service Automation |
| Security | ISO 27001, SOC 2 Type II, HITRUST ([thelevel.ai](https://thelevel.ai/security), checked 2026-10-08) | — |
| Data processing terms | A data processing agreement is available. ([thelevel.ai](https://thelevel.ai/legal/dpa), checked 2026-10-08) | A data processing agreement is available. ([sierra.ai](https://sierra.ai/privacy-policy), checked 2026-10-04) |
| Integrations | Okta, Zoom, Slack, Intercom, Five9, Twilio, Amazon Connect, Talkdesk, Genesys, Zendesk, Salesforce, Snowflake ([thelevel.ai](https://thelevel.ai/integrations), checked 2026-10-08) | — |

## Companies named on both

Confirmed or observed on each side. The first public proof is not an adoption date.

| Company | First public proof, Sierra |
|---|---|
| [Wayfair](https://www.usedby.ai/companies/wayfair.md) | On or before June 2025 |
| [Chime](https://www.usedby.ai/companies/chime.md) | On or before December 2025 |

## Published results

Reviewed stories only; usedby did not measure the figures.

- Level AI: [Globalfaces](https://www.usedby.ai/case-studies/globalfaces-level-ai.md): **75%**: “Globalfaces now enjoys a 75% conversion rate on verification calls” (captured by usedby 2026-10-08)
- Level AI: [ezCater](https://www.usedby.ai/case-studies/ezcater-level-ai.md): **13%**: “13% decrease in its overall call handling time” (captured by usedby 2026-10-08)
- Sierra: [RunBuggy](https://www.usedby.ai/case-studies/runbuggy-sierra.md): **1,000 hours**: “Nearly 1,000 hours per month returned to exception handling and high-value work” (published 2026-02-03)
- Sierra: [Next](https://www.usedby.ai/case-studies/next-sierra.md): **6 weeks**: “Time to live 6 weeks” (published 2026-02-25)

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Source: https://www.usedby.ai/compare/level-ai-vs-sierra · How we check: https://www.usedby.ai/methodology