# Blip vs Sierra: who uses which

On usedby, 28 companies use Blip and 51 use Sierra. 1 company uses both, including Santander. Counts include every proof level, job-post signals included; each company keeps its proof level on each side. Latest check 2026-10-09: 79 of 79 public lines checked.

## Side by side

|  | [Blip](https://www.usedby.ai/tools/blip.md) | [Sierra](https://www.usedby.ai/tools/sierra.md) |
|---|---|---|
| Public customers | 28 | 51 |
| Confirmed | 0 | 34 |
| Observed | 28 | 17 |
| Signals (job posts) | 0 | 0 |
| Top industries of customers (every proof level) | Consumer Goods (5), Banking & Mortgages (4), Energy, Utilities & Cleantech (3) | Fintech & Payments (8), Retail (4), E-commerce & D2C (3) |
| Category | AI agents for customer service | AI agents for customer service |
| Security | ISO 27001 ([blip.ai](https://www.blip.ai/en/trust-center/), checked 2026-10-08) | — |
| Data processing terms | A data processing agreement is available. ([blip.ai](https://www.blip.ai/en/trust-center/), checked 2026-10-08) | A data processing agreement is available. ([sierra.ai](https://sierra.ai/privacy-policy), checked 2026-10-04) |
| Integrations | BigQuery, Tiny, Bling, Google Sheets, PicPay, Nuvemshop, Hotmart, Yampi, Tray, Shopify, Exact Spotter, Catalyst ([blip.ai](https://www.blip.ai/en/integrations/), checked 2026-10-08) | — |

## Companies that use both

Every proof level counts; the proof level of each side is shown, strongest proofs first. The first public proof is not an adoption date.

| Company | Proof, Blip | Proof, Sierra | First public proof, Sierra |
|---|---|---|---|
| [Santander](https://www.usedby.ai/companies/santander.md) | Observed | Observed | On or before August 2026 |

## Published results

Reviewed stories only; usedby did not measure the figures.

- 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/blip-vs-sierra · How we check: https://www.usedby.ai/methodology