# Fireworks AI vs Nebius AI Cloud: who uses which

On usedby, 29 companies use Fireworks AI and 48 use Nebius AI Cloud. 3 companies use both, including Cognition, Cursor and Lightfern. 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: 77 of 77 public lines checked.

## Side by side

|  | [Fireworks AI](https://www.usedby.ai/tools/fireworks-ai.md) | [Nebius AI Cloud](https://www.usedby.ai/tools/nebius.md) |
|---|---|---|
| Public customers | 29 | 48 |
| Confirmed | 16 | 35 |
| Observed | 13 | 13 |
| Signals (job posts) | 0 | 0 |
| Top industries of customers | DevTools & Infrastructure (6), Artificial Intelligence (3), HealthTech & Digital Health (1) | Artificial Intelligence (2), Cybersecurity (1), DevTools & Infrastructure (1) |
| Category | LLM Inference | LLM Inference |
| Security | SOC 2 Type II, HIPAA, ISO 27001, ISO 27701, ISO 42001 ([trust.fireworks.ai](https://trust.fireworks.ai/), checked 2026-10-07) | — |
| Data processing terms | A data processing agreement is available. ([trust.fireworks.ai](https://trust.fireworks.ai/), checked 2026-10-07) | — |

## Companies named on both

Confirmed or observed on each side.

| Company |
|---|
| [Cognition](https://www.usedby.ai/companies/cognition.md) |
| [Cursor](https://www.usedby.ai/companies/cursor.md) |
| [Lightfern](https://www.usedby.ai/companies/lightfern.md) |

## Published results

Reviewed stories only; usedby did not measure the figures.

- Nebius AI Cloud: [TrialHub](https://www.usedby.ai/case-studies/trialhub-nebius.md): **50%**: “TrialHub reduces the time spent on feasibility assessments by 50%” (captured by usedby 2026-10-07)
- Nebius AI Cloud: [Krisp](https://www.usedby.ai/case-studies/krisp-nebius.md): **50–80%**: “a single H100 GPU completed the training process 50–80% faster than the A100 GPU” (captured by usedby 2026-10-07)

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