Business category · United States
Engineering Services
20 AI answers to 5 prompts name 14 brands. AECOM leads with 17.5% of mentions; the top 3 hold 44.7%.
Level 2n = 20 answers5 promptsupdated Oct 25, 2026AI Mode5ChatGPT5AI Overviews5Gemini5
AI answers
20
5 prompts
Last run Oct 25, 2026
Brands seen
14
Top 3 hold 44.7%
n = 20 answers
Concentration
Fragmented
HHI 1,057 · leader 17.5%
Leader
AECOM
17.5% of mentions
Avg. position #2.5
Top engine
AI Mode
25% of answers
4 engines sampled
Sources cited
75
Top: enr.com 45.3%
n = 20 answers
Visibility indexes
1 index · size = AI answers · colour = top-3 brand share
What AI answers show
Brands and sources in the sampled answers
n = 20 answers5 promptsOct 25, 2026
Brands AI recommends
Share of brand mentions in Engineering Services answers
- 1AECOMavg. #2.517.5%18
- 2Jacobsavg. #4.413.6%14
- 3Kimley-Hornavg. #5.113.6%14
- 4WSPavg. #4.79.7%10
- 5HDRavg. #5.89.7%10
n = 20 answers14 brands seen in total
Market concentrationFragmented
FragmentedModerateConcentrated
HHI 1,057Leader 17.5%Top 3 44.7%
Fragmented: no brand dominates. The top 3 hold 44.7% of mentions; the leader 17.5%.
Answers behind the ranking
Every engine sampled
- Google AI Mode5
- ChatGPT5
- AI Overviews5
- Gemini5