# LlamaIndex vs Within (formerly Klarity): who uses which

On usedby, 48 companies use LlamaIndex and 16 use Within (formerly Klarity). 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: 64 of 64 public lines checked.

## Side by side

|  | [LlamaIndex](https://www.usedby.ai/tools/llamaindex.md) | [Within (formerly Klarity)](https://www.usedby.ai/tools/within.md) |
|---|---|---|
| Public customers | 48 | 16 |
| Confirmed | 23 | 5 |
| Observed | 24 | 11 |
| Signals (job posts) | 1 | 0 |
| Top industries of customers | Artificial Intelligence (4), Accounting & Audit (2), Automotive Manufacturing (1) | Fintech & Payments (2), Sales Tech & CRM (2), Artificial Intelligence (1) |
| Category | Document & Process Intelligence | Document & Process Intelligence |
| Data processing terms | A data processing agreement is available. ([security.llamaindex.ai](https://security.llamaindex.ai/), checked 2026-10-07) | — |
| Free trial | Free trial or free plan available. ([llamaindex.ai](https://www.llamaindex.ai/pricing), checked 2026-10-07) | — |
| Security | — | SOC 2 Type II ([within.ai](https://www.within.ai/trust), checked 2026-10-08) |

## Published results

Reviewed stories only; usedby did not measure the figures.

- LlamaIndex: [Lyzr AI](https://www.usedby.ai/case-studies/lyzr-llamaindex.md): **$1.5 million**: “Lyzr's annual recurring revenue jumped from around $100,000 to about $1.5 million in less than 60 days.” (captured by usedby 2026-10-07)
- LlamaIndex: [GymNation](https://www.usedby.ai/case-studies/gymnation-llamaindex.md): **20%**: “20% increase in digital lead to sales conversion” (captured by usedby 2026-10-07)
- Within (formerly Klarity): [Accelirate](https://www.usedby.ai/case-studies/accelirate-within.md): **67%**: “With Within, Accelirate cut PDD creation time by 67% for simple workflows” (captured by usedby 2026-10-08)
- Within (formerly Klarity): [Doordash](https://www.usedby.ai/case-studies/doordash-within.md): **3,800+**: “3,800+ processes documented and analyzed across entire accounting organization” (captured by usedby 2026-10-08)

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