Blue Book

AI Visibility Index · Cell report

Measured

AI Visibility Index: EDM Services in California

When a buyer asks an AI assistant for a edm services supplier in California, these are the companies that get named. This is what we found when the cell was last measured.

  • 60 companies tracked
  • Last measured September 30, 2026
  • Next measurement October 30, 2026
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The headline numbers

Never named by AI

44 of 60

companies never appeared in a single buying question

They were asked the same 5 buying questions as everyone else in this cell and were not named once.

  • 16 named at least once
  • 44 never named
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Cell average
1.1of 15

Across all 60 tracked companies.

Top ten average
6.8of 15

The ten most visible companies in the cell.

A company's score is how many of the 15 measured answers named it.

The top ten in California

These are the companies AI assistants named most often when California buyers went looking for a supplier in this category.

Top 10 most AI-visible EDM Services companies in California, measured September 30, 2026
RankCompanyAI visibility
1
Caltron Co
8 employeesBurbank, California

13 of 15 answers

2
WIRE PRO EDM
5 employeesChatsworth, California
2 name variants
  • Wire Pro EDM Technologiesmost common7
  • Wire Pro EDM Technologies, Inc.2

9 of 15 answers

3
C & H Machine, Inc.
70 employeesEscondido, California

8 of 15 answers

4
A&H Wire EDM
California

7 of 15 answers

5
Aerox Precision Services
California

7 of 15 answers

6
Custom EDM LLC
6 employeesSan Leandro, California

5 of 15 answers

7
Industrial Tool and Die, Inc.
13 employeesSanta Ana, California

5 of 15 answers

8
RJ Enterprises
9 employeesGardena, California

5 of 15 answers

9
Wire Cut Company, Inc
20 employeesBuena Park, California
2 name variants
  • Wire Cut Companymost common3
  • Wire Cut Company, Inc.2

5 of 15 answers

10
Advanced Machining & Tooling
46 employeesPoway, California
2 name variants
  • Advanced Machining & Tooling (AMT)most common3
  • Advanced Machining & Tooling (AMT Manufacturing)1

4 of 15 answers

25 more companies were named at least once. Companies outside the top ten are counted in the averages but not named here.

Also named, based in another state

AI assistants named these companies too, but MacRAE'S lists them in a different state, not California. They belong to that state's ranking, not this one.

CompanyStateMentions
Spencer CorporationWashington3 of 15
AMI Machining / WireEDM.comIdaho1 of 15
Esco PrecisionNew Jersey1 of 15
Mission Plastics NorthMissouri1 of 15

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The five questions we asked

Every company in this cell is measured on the same questions, written the way a buyer would type them. That is what makes the ranking a comparison rather than a collection of anecdotes.

  1. 1“Best EDM services companies in California”
  2. 2“Who supplies precision wire EDM cutting for hardened tool steel components in California”
  3. 3“I need a California EDM partner for a short-run mold insert project, who should I talk to”
  4. 4“Top EDM services suppliers in California for moldmaking and tooling buyers”
  5. 5“Which California EDM shops can hold ±0.0002 inch tolerances on complex wire EDM profiles”
  6. 6“List 20 EDM services companies in California with their specialties.”the roster question

Each question is asked more than once, which is why a company's score is out of 15 answers rather than out of the number of questions.

Where AI drew its answers from

These are the sources the answers in this cell leaned on most, ranked by how many of the named companies each one stands behind.

  • aerox.aero
    3 companies
  • wireproedm.com
    2 companies
  • wirecutcompany.com
    2 companies
  • amtmfg.com
    2 companies
  • milcowireedm.com
    2 companies
  • ranchomoldplus.com
    2 companies
  • c-hmachine.com
    1 company
  • itdinc.us
    1 company
  • ricaurteprecision.com
    1 company
  • rjenterprise.net
    1 company
  • caltronedm.com
    1 company
  • calwire.com
    1 company

47 sources were cited across this cell's answers from 38 domains. A directory page often stands behind several companies at once; a company's own site usually stands behind one.

California in context

California ranks 3rd of 4 measured states in this category. Each bar is the share of that state's tracked companies that AI assistants named at least once; across every measured state in this category the share is 32%.

California (this report)Other measured statesCategory average (32%)

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More published reports in California