Brex vs Firefly III
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Brex is the stronger AI pick in Expense Management: it has a visibility score of 34.4 versus 0 for Firefly III.
Choose Brex if…
- You want the brand AI engines rank higher (34.4 vs 0)
- You need SOC 1 Type II or SOC 2 Type II or PCI DSS or ISO/IEC 27001:2022 coverage
- Strong for global operations and corporate cards
- Clear, scalable pricing with a free entry tier
Choose Firefly III if…
No clear advantage in the published data.
AI visibility side by side
Latest weekly run · Nov 2
| Metric | Brex | Firefly III |
|---|---|---|
| Visibility score | 34.4% | 0% |
| Change vs last week | New | New |
| Rank in Expense Management | #5 | #31 |
| Share of voice | 9.4% | 0% |
| Mentions this run | 45 | 0 |
| Positive in AI answers | 58% | — |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Brex 0pp · Firefly III 0pp over 0 weekly runs.
Engine by engine
Brex leads on 3 of 3 engines
Head to head in AI answers
0 engine answers name both brands
Features, pricing & fit
| Dimension | Brex | Firefly III |
|---|---|---|
| Pricing model | Per seat | — |
| Entry price | Free; paid from $12 per seat / mo | — |
| Free plan | Yes | — |
| Deployment | — | Self-hosted: the user installs it and runs it on their own server, with a Docker image available. |
| Compliance | SOC 1 Type II, SOC 2 Type II, PCI DSS, ISO/IEC 27001:2022 | — |
| Support | 24/7 live phone and chat support, Named account manager on the Enterprise plan | — |
| Founded | 2017 | 2017 |
| Headquarters | San Francisco, CA, USA | Netherlands |
| Employees | 1,001–5,000 | — |
| Funding | Investment from Capital One as part of acquisition deal | — |
| Best for | Startups, mid-size companies and enterprises that want cards, expenses, bill pay and travel in one platform | Individuals who want a free, self-hosted personal finance manager. |
Plans side by side
Brex
Firefly III
Pricing not available.
Pros and cons
Themes from the AI answers that mention each brand
Brex
- Strong for global operations and corporate cards
- Clear, scalable pricing with a free entry tier
- Automated receipt matching and AI-driven reconciliation
- Deep integrations with banking and billing tools
- Well suited to startups and fast-growing companies
Firefly III
Profile in progress.
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Brex vs Firefly III”, https://slateindex.ai/compare/brex-vs-firefly-iii, data of Nov 2, 2026. Licence: CC BY 4.0.