Design Engineering (2026)
Key takeaway
WSP is generally larger by workforce and, where compared, market value. Most engines put AECOM ahead on gross revenue, but ChatGPT puts WSP ahead using revenue figures without specifying their currencies. The engines compare reported revenue, staffing and, in some cases, stock valuations rather than treating size as a single measure. Gemini and Copilot cite financial comparison sources supporting WSP's higher market value.
Where they differ
Which company has higher revenue, and whether currencies are comparable
Whether workforce sizes are comparable or WSP is clearly larger
Disagreement (1)
Which company has the higher annual revenue
Verdict
ChatGPT says yes, WSP is bigger on revenue and staff, while Copilot, Gemini and Google AI Mode say it depends on the measure. All four agree WSP leads on headcount.
A narrow call - the engines that took a side barely agree. 1 engines took a side · 3 hedged.
What each engine picked
| Engine | Picked | Because |
|---|---|---|
| ChatGPT | WSP Global | WSP has more employees and higher reported annual revenue than AECOM. |
| Gemini | No side taken | Size depends on the metric: WSP Global is larger by market value, AECOM by gross revenue, and their workforces are comparable. |
| Google AI Mode | No side taken | Size depends on the measure: WSP has more employees, while AECOM has higher gross revenue. |
| Copilot | No side taken | WSP is larger in workforce and market capitalization, while AECOM is larger in annual revenue. |
Every line is one engine's own stored verdict on this question. Nothing is inferred from the wording of an answer.
How we rank
Related questions
Cited, but not mentioned
5 sites cite this answer without naming anyone
What the models searched first
The sub-queries each engine actually searched before answering.
Full responses
5 of 5 engines that answered. Full stored text as captured, with dashes shown as hyphens. Nothing is summarised.
Yes. WSP Global is bigger than AECOM overall, particularly by employee numbers and reported annual revenue. Here's a comparison using FY2025 figures: | Metric | WSP Global | AECOM | | --- | --- | --- | | Annual revenue | $18.3B | $16.1B | | Employees | 74,400 | ~51,000 | | Headquarters | Montreal, Canada | Dallas, USA | | Global presence | Yes | Yes | | Industry | Engineering & consulting | Engineering & consulting | Sources: WSP's FY2025 results and AECOM's FY2025 annual report. [WSP releases strong Q4 2025 results and issues 2026 financial outlook](https://www.wsp.com/en-ca/news/2026/wsp-releases-strong-q4-2025-results-and-issues-2026-financial-outlook)[2025 Annual Report](https://www.sec.gov/Archives/edgar/data/868857/000086885726000008/aecom2025_arx10k.pdf)[Annual Report 2025](https://aecom.com/annual-report/) ## What does this mean? - WSP: Larger workforce and higher reported revenue. - AECOM: Still one of the world's largest infrastructure and engineering consultancies, with significant government and infrastructure work. - Industry standing: Both are top-tier global engineering consultancies. My take: WSP has overtaken AECOM in overall scale. They're very close competitors, but WSP currently has the edge in size. One important distinction: AECOM has substantial subcontractor pass-through revenue, so comparing net service revenue gives a different picture.
Great question! Let’s break it down by **size metrics** - revenue, employees, and market capitalization - since “bigger” can mean different things. ### 📊 WSP vs AECOM (2026 snapshot) Metric| WSP| AECOM ---|---|--- **Employees**| ~78,000 [WSP (TSX: WSP) Profile 2026: Financials, AI Strategy & AECOM, Jacobs Solutions Inc., Stantec Comparison](https://dexteragent.ai/companies/wsp-1771296985)| ~52,000 [Top Environmental Consulting Firms (2026)](https://www.hackingthecaseinterview.com/pages/top-environmental-consulting-firms) **Revenue(2023–2025 range)**| $11–14.4 billion USD [WSP (TSX: WSP) Profile 2026: Financials, AI Strategy & AECOM, Jacobs Solutions Inc., Stantec Comparison](https://dexteragent.ai/companies/wsp-1771296985)[WSPOF vs ACM Stock: Which is the Better Buy?](https://www.financecharts.com/stocks/WSPOF,ACM)| $16.1 billion USD (2023) [Top Environmental Consulting Firms (2026)](https://www.hackingthecaseinterview.com/pages/top-environmental-consulting-firms) **Market Cap (2025)**| ~$15 billion USD [WSPOF vs ACM Stock: Which is the Better Buy?](https://www.financecharts.com/stocks/WSPOF,ACM)| ~$7.6 billion USD [WSPOF vs ACM Stock: Which is the Better Buy?](https://www.financecharts.com/stocks/WSPOF,ACM) ### ✅ Key Takeaways * **Headcount:** WSP is larger, with significantly more employees worldwide. * **Revenue:** AECOM is bigger in terms of annual revenue, meaning it generates more money from projects. * **Market Value:** WSP currently has a higher market capitalization, suggesting investors value it more highly than AECOM. 👉 So, WSP is “bigger” in workforce and market cap, while AECOM is “bigger” in revenue. Would you like me to compare their **global reach and project scale** as well? That often shows which company has more influence in mega-projects.
**Yes, WSP is generally considered larger than AECOM** when measured by overall workforce headcount and total revenue, though they are close competitors and rank among the largest engineering, design, and professional services consulting firms in the world. A quick comparison highlights how they stack up: * **Workforce / Headcount:** WSP employs roughly **83,000 to 84,600** people globally. In contrast, AECOM's official reported workforce sits at around **51,000 to 53,000** employees (though some professional mapping databases note higher third-party profile counts). By direct corporate headcount, WSP is larger. [AECOM Number of Employees 2026 - Revelio Labs](https://www.reveliolabs.com/companies/aecom/employees#:~:text=AECOM%20Annual%20Employee%20Count%20\(2023%2D2026\)%202023%20Q4,Q2%202026%20Q1%2047.5k%2049.5k%2051.5k%2053.8k.) * **Revenue:** WSP registers higher annual gross revenues (pulling roughly CAD $19+ billion / ~USD $14–$15 billion equivalent), compared to AECOM's trailing revenue which typically hovers around USD $13–$15 billion. * **Backlog:** AECOM frequently boasts a larger contracted project _backlog_ (often exceeding $20 billion), meaning it has significant long-term secured revenue visibility, even if WSP edges it out slightly in total overall size and employee headcount. [WSP Global Inc. (WSP) Competitive Analysis - KoalaGains](https://koalagains.com/stocks/TSX/WSP/competition)
Yes, **WSP is larger than AECOM** in terms of overall revenue and headcount, though how they compare depends slightly on the specific financial metric used (such as gross revenue versus net revenue/service revenue). A size comparison based on recent full-year data: * **Headcount (Number of Employees):** * **WSP:** Approximately **74,400 employees** globally. * **AECOM:** Approximately **51,000 employees** globally. * _Verdict:_ WSP has a significantly larger workforce. [WSP releases strong Q4 2025 results and issues 2026](https://www.wsp.com/en-gl/investors/press-releases/details/wsp-releases-strong-q4-2025-results-and-issues-2026-financial-outlook/3245102/2026)[AECOM: Number of Employees 2012-2026 | ACM](https://www.macrotrends.net/stocks/charts/ACM/aecom/number-of-employees) * **Total Gross Revenue:** * **WSP:** Reported roughly **$18.29 billion** (CAD/USD equivalent depending on reporting; approx. $18.3B gross revenue). * **AECOM:** Reported **$16.1 billion** for its fiscal year. * _Verdict:_ WSP leads in total top-line gross revenue. [AECOM reports fourth quarter and full year fiscal 2025 results](https://investors.aecom.com/news-releases/news-release-details/aecom-reports-fourth-quarter-and-full-year-fiscal-2025-results)[WSP releases strong Q4 2025 results and issues 2026](https://www.wsp.com/en-gl/investors/press-releases/details/wsp-releases-strong-q4-2025-results-and-issues-2026-financial-outlook/3245102/2026) Overall, industry analyses and market rankings place WSP at the top of the sector globally, maintaining a multi-billion dollar lead over competitors like AECOM, Jacobs, and Tetra Tech. [Tetra Tech overtakes AECOM as WSP extends global lead](https://environment-analyst.com/global/111748/tetra-tech-overtakes-aecom-as-wsp-extends-global-lead) Would you like to compare them across other metrics, such as **geographic footprint**, **market capitalization**, or **backlog/contract wins**?
Yes - by workforce, WSP is larger: it reports 83,000 employees, versus AECOM’s roughly 51,000. WSP also leads AECOM in the environmental and social consulting market.([wsp.com][1])([environment-analyst.com][2])([linkedin.com][3]) [1]: https://www.wsp.com/en-us/ "WSP | Global engineering and professional services firm" [2]: https://environment-analyst.com/global/111748/tetra-tech-overtakes-aecom-as-wsp-extends-global-lead "WSP extends lead over global E&S consulting market" [3]: https://www.linkedin.com/posts/steve-burrows-cbe-bsc-hons-pe-ceng-fice-fasce-mistructe-leed-ap-7b49954_arup-wsp-aecom-for-fun-i-asked-claude-to-activity-7441978644253626368-KrDi "Arup vs WSP vs AECOM: Career Advice - LinkedIn"
Your question will include this prompt's context: Is WSP bigger than AECOM?