What are the top 10 engineering design companies in the world?
Asked "What are the top 10 engineering design companies in the world?", ChatGPT, Copilot, Gemini, Google AI Mode and Perplexity named 31 distinct names across 5 answers on September 9, 2026, and 8 of them in two or more answers, and all 5 engines agreed on AECOM, the only name every engine named.
8 of 31 names confirmed · named in 2 or more of 5 answers · asked September 9, 2026 · 5 engines
The top 10 engineering design companies in the world include WSP Global, Jacobs Solutions, AECOM, and Arcadis, among others, with rankings varying by source and metric such as revenue, design hours, and global reach. These companies specialize in various fields including infrastructure, environment, transportation, and energy. They are identified by industry benchmarks like Engineering News-Record (ENR) and are known for handling large-scale projects globally.
- 1AECOMnamed in 5 of 5 answers
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- 2Arcadisnamed in 4 of 5 answers
- 3Stantecnamed in 4 of 5 answers
- 4WSP Globalnamed in 3 of 5 answers
- 5AtkinsRéalisnamed in 3 of 5 answers
- 6Worleynamed in 3 of 5 answers
- 7Tetra Technamed in 3 of 5 answers
- 8Jacobs Solutionsnamed in 2 of 5 answers
- 9China State Construction Engineering Corporation (CSCEC)named in 1 of 5 answersone answer
- 10Jacobs Solutions Inc.named in 1 of 5 answersone answer
- 11Power Construction Corporation of Chinanamed in 1 of 5 answersone answer
- 12China Energy Engineering Corporationnamed in 1 of 5 answersone answer
- 13Jacobsnamed in 1 of 5 answersone answer
- 14VINCInamed in 1 of 5 answersone answer
- 15WSP Global Inc.named in 1 of 5 answersone answer
- 16Valmont Industriesnamed in 1 of 5 answersone answer
- 17China Communications Construction Groupnamed in 1 of 5 answersone answer
- 18Samsung C&Tnamed in 1 of 5 answersone answer
- 19China Energy Engineering Corp.named in 1 of 5 answersone answer
- 20Jacobs Engineering Groupnamed in 1 of 5 answersone answer
- 21Power Construction Corp. of Chinanamed in 1 of 5 answersone answer
- 22Larsen & Toubro (L&T)named in 1 of 5 answersone answer
- 23Parsons Brinckerhoffnamed in 1 of 5 answersone answer
- 24Fluor Corporationnamed in 1 of 5 answersone answer
- 25Siemens AGnamed in 1 of 5 answersone answer
The full measurement
- The position each of the 5 engines gave all 31 names.
- How many of the 5 answers named each of them.
- 50 sampled observations behind this ranking, and where the engines disagree.
- Fan-out — the query each engine actually searched.
- Every citation, and the sources nobody cited.