# Crescendo vs Sierra: who uses which

On usedby, 31 companies use Crescendo and 50 use Sierra. 1 company uses both, including Airtable. Counts include every proof level, job-post signals included. Companies named on both have a confirmed or observed line on each side. Latest check 2026-10-07: 81 of 81 public lines checked.

## Side by side

|  | [Crescendo](https://www.usedby.ai/tools/crescendo.md) | [Sierra](https://www.usedby.ai/tools/sierra.md) |
|---|---|---|
| Public customers | 31 | 50 |
| Confirmed | 15 | 37 |
| Observed | 16 | 13 |
| Signals (job posts) | 0 | 0 |
| Top industries of customers | Marketplace (2), DevTools & Infrastructure (1), Fintech & Payments (1) | Fintech & Payments (5), Telecommunications (3), Banking & Mortgages (2) |
| Category | Customer Service Automation | Customer Service Automation |
| Data processing terms | — | A data processing agreement is available. ([sierra.ai](https://sierra.ai/privacy-policy), checked 2026-10-04) |

## Companies named on both

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

| Company | First public proof, Sierra |
|---|---|
| [Airtable](https://www.usedby.ai/companies/airtable.md) | On or before June 2026 |

## Published results

Reviewed stories only; usedby did not measure the figures.

- Crescendo: [Webconnex](https://www.usedby.ai/case-studies/webconnex-crescendo.md): **12,000+**: “With 12,000+ more tickets sold year over year” (captured by usedby 2026-10-07)
- Crescendo: [Rio](https://www.usedby.ai/case-studies/rio-crescendo.md): **$10K**: “Monthly savings $10K” (captured by usedby 2026-10-07)
- 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/crescendo-vs-sierra · How we check: https://www.usedby.ai/methodology