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Compare · ai coding assistants

Claude Code VS Codex_

As of 4 November 2026, Codex is named by 2,265 companies and Claude Code by 5,532; Claude Code skews to companies under 200 people (51% vs 49%), Codex to companies over 1,000 (23% vs 21%).

As of 4 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.

The website-and-DNS footprint is not comparable between a marketing suite and a CRM: Claude Code's script and mail records show on hundreds of thousands of small sites, Codex rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.

Claude Code: 2–200 employees
51%
Codex: 2–200 employees
49%
Claude Code: 1,000+ employees
21%
Codex: 1,000+ employees
23%
Postings per company, 90 days
2.5 · 2.6
Website or DNS footprint
0 · 0
5,532companies name Claude Code
2,265companies name Codex
2,055name both
14,085 · 5,911postings in 90 days, Claude Code · Codex
02 — Side by side

Who chooses which

Share of each tool's companies in every segment. "Leans" marks a gap of more than two points.

By company size
SegmentClaude CodeshareCodexshareLeans
Self-employed2444%1256%even
2-10 employees60611%25611%even
11-50 employees91216%36916%even
51-200 employees1,28123%47721%Claude Code
201-500 employees80415%30513%even
501-1000 employees5039%2109%even
1001-5000 employees66112%29113%even
5001-10000 employees1563%763%even
10,001+ employees3657%1567%even
By industry
SegmentClaude CodeshareCodexshareLeans
Technology & software2,87452%1,11749%Claude Code
Business & finance services1,19322%53724%Codex
Manufacturing & industry3456%1466%even
Media & content2605%1316%even
Commerce & trade1623%653%even
Consumer services & leisure1493%643%even
Public, community & associations1162%552%even
Utilities & infrastructure942%311%even
Health care892%342%even
Property & construction811%261%even
Transport, logistics & rental621%––outside top 12
Hospitality & travel561%181%even
Automotive––231%outside top 12
By country
SegmentClaude CodeshareCodexshareLeans
United States3,32860%1,44764%Codex
Germany4027%1376%even
United Kingdom3917%1517%even
France1463%422%even
Canada1342%462%even
Netherlands781%231%even
Australia701%––outside top 12
Brazil701%231%even
Sweden641%301%even
India621%241%even
Japan551%231%even
Poland511%201%even
Switzerland––181%outside top 12
Postings by team (share of each tool's postings)
SegmentClaude CodeshareCodexshareLeans
Software engineering7,81545%3,01242%Claude Code
Data & AI3,45420%1,60622%Codex
Product, program & project management8055%3575%even
IT operations & business systems7744%4196%even
Engineering (non-software)4873%1843%even
Design & UX4863%1212%even
Marketing & communications4453%1422%even
Sales3972%1652%even
Finance & accounting1231%951%even
Customer service & success1001%471%even
General management & consulting971%581%even
Business development & strategy810%220%even
Unclassified520%270%even
Quality, safety & environment510%100%even
Human resources480%220%even
research and science440%250%even
Legal, compliance & risk350%330%even
Education & training310%140%even
arts media and entertainment200%150%even
manufacturing and production200%20%even
construction and civil130%50%even
Administration & office80%90%even
logistics warehouse and transport80%110%even
procurement and purchasing30%20%even
personal care and wellness20%––outside top 12
public safety and protective services20%––outside top 12
Retail & store operations20%––outside top 12
skilled trades and field service20%––outside top 12
facilities cleaning and security10%10%even
social care and community10%10%even
healthcare support and caregiving––20%outside top 12
Go deeper

The companies behind each column

Companies using Claude Code →
Companies using Codex →
ai coding assistants ranked →

Cite this

Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.

Codex is named by 2,265 companies in job postings and Claude Code by 5,532; 2,055 name both. (Breaknorm, 4 November 2026, https://breaknorm.co/compare/claude-code-vs-codex)
How we know

Read from the source, not self-reported

Every number on this page can be traced to a page we crawled or a posting we read. Full methodology →

  • Job postingsRead hourly from career sites. A tool counts when the employer's own text names it as the team's system; both tools can count for one company.
  • Website and DNSScripts and embeds on the company's pages, plus SPF, DKIM, MX and CNAME records of its domain that point at the vendor.
  • SegmentsCountry, size and industry from the company profile built from its website.
  • Not a reviewNo ratings, prices or feature claims. For those, read the vendors.
FAQ

Claude Code vs Codex: questions

Which is more used, Claude Code or Codex?

By companies naming it in their own job postings, Claude Code (5,532) over Codex (2,265). By website-and-DNS footprint, Codex (0 vs 0), because its scripts and mail records sit on many small company sites.

Who chooses Claude Code?

51% of Claude Code companies have 2 to 200 employees, against 49% for Codex. 21% of Claude Code companies have over 1,000 employees, against 23% for Codex.

Do companies run both?

2,055 companies name both in their postings, usually Claude Code in marketing and Codex in sales, or during a migration.

Where do these numbers come from?

From the employer's own text in job postings read hourly from career sites, and from scripts found on company websites in our crawl. No vendor data, no surveys.

Companies and people

Get either list your way

The same data as a search, over MCP and the API, as bulk files, or pushed to you as it changes.

SearchCompany searchFilter on what a company actually does→SearchPeople searchDecision makers, normalized and verified→MCP and APICompanies over MCP and APICount, search and export from your agent→DatasetCompany and People datasetThe whole market in your warehouse→DataCoverage by countryCheck your market before you start→SearchLocal businessesThe same database, by category and city→

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with the person who owns it

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