# Cognigy vs Sierra: who uses which

On usedby, 58 companies use Cognigy and 50 use Sierra. No company is listed with both yet. 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: 105 of 108 public lines checked.

## Side by side

|  | [Cognigy](https://www.usedby.ai/tools/cognigy.md) | [Sierra](https://www.usedby.ai/tools/sierra.md) |
|---|---|---|
| Public customers | 58 | 50 |
| Confirmed | 40 | 37 |
| Observed | 18 | 13 |
| Signals (job posts) | 0 | 0 |
| Top industries of customers | Telecommunications (5), Airlines & Aviation Services (4), Automotive Manufacturing (4) | Fintech & Payments (5), Telecommunications (3), Banking & Mortgages (2) |
| Category | Customer Service Automation | Customer Service Automation |
| Security | ISO 27001, ISO 27701, ISO 42001, SOC 2 Type II, TISAX, C5 ([trust.cognigy.com](https://trust.cognigy.com/), checked 2026-10-04) | — |
| Integrations | Salesforce, Zendesk, HubSpot, Slack, Twilio, Jira, Microsoft Dynamics, Amazon Connect, Stripe, Freshdesk, Vonage ([cognigy.com](https://www.cognigy.com/platform/cognigy-marketplace), checked 2026-10-04) | — |
| Data processing terms | — | A data processing agreement is available. ([sierra.ai](https://sierra.ai/privacy-policy), checked 2026-10-04) |

## Published results

Reviewed stories only; usedby did not measure the figures.

- Cognigy: [Lippert](https://www.usedby.ai/case-studies/lippert-cognigy.md): **80%**: “80% cost reduction from handled queries” (captured by usedby 2026-10-08)
- Cognigy: [Mister Spex](https://www.usedby.ai/case-studies/mister-spex-cognigy.md): **30 seconds**: “30 seconds saved per call” (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/cognigy-vs-sierra · How we check: https://www.usedby.ai/methodology