Companies using Promptfoo
606 companies in our data use Promptfoo, and 401 of them name it in job posts they wrote. From October 2025 to August 2026, 454 job posts named it. It comes up most in AI Engineer job posts.
Data as of November 9, 2026 · Markdown version
Which companies name Promptfoo in the most job posts?
What else do we know about Promptfoo?
Is hiring for Promptfoo growing?
Show the data
| Month | Job posts naming Promptfoo | All job posts | Per 10,000 |
|---|---|---|---|
| Oct 2025 | 10 | 1,413,673 | 0.07 |
| Nov 2025 | 19 | 1,822,119 | 0.10 |
| Dec 2025 | 13 | 1,236,103 | 0.11 |
| Jan 2026 | 23 | 1,828,002 | 0.13 |
| Feb 2026 | 34 | 1,856,647 | 0.18 |
| Mar 2026 | 29 | 1,850,711 | 0.16 |
| Apr 2026 | 37 | 1,728,886 | 0.21 |
| May 2026 | 69 | 1,821,509 | 0.38 |
| Jun 2026 | 81 | 1,909,496 | 0.42 |
| Jul 2026 | 74 | 1,815,180 | 0.41 |
| Aug 2026 | 65 | 1,835,698 | 0.35 |
How many companies named Promptfoo in a job post for the first time in recent months?
Companies whose first job post naming it appeared in that period. Recruiters, staffing firms and job boards are left out.
How do we know which companies use Promptfoo?
606 companies. Each is counted once, under the strongest evidence we have for it.
What size are the companies that use Promptfoo?
Share of its companies Typical tech page
Where are Promptfoo companies based?
Companies in 50 countries and territories. Shares are of companies with a known headquarters country.
Show the data
| Country | Companies | Share | Typical tech page |
|---|---|---|---|
| United States | 282 | 49% | 43% |
| India | 50 | 8.7% | 6.9% |
| United Kingdom | 34 | 5.9% | 6.4% |
| France | 25 | 4.3% | 4.6% |
| Germany | 24 | 4.2% | 4.4% |
| Canada | 18 | 3.1% | 3.6% |
Which teams work with Promptfoo?
What else do Promptfoo companies use?
Share of the 244 Promptfoo companies counted here whose job posts also name the tool Typical for companies the same size
Which companies started naming Promptfoo in job posts recently?
Companies that named Promptfoo in a job post for the first time between April and August 2026, ranked by their job posts in those months. AI-native companies get a group of their own, whatever their size. Recruiters and job boards are left out.
Which roles mention Promptfoo most?
Show the data
| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---|---|---|---|
| AI Engineer | 34% | 156 | 43 | 72 |
| Software Development Engineer in Test | 18% | 80 | 15 | 47 |
| Software Engineer | 7.5% | 34 | 10 | 18 |
| Security Engineer | 4.8% | 22 | 11 | 2 |
| Quality Engineer | 2.9% | 13 | 4 | 5 |
| Platform Engineer | 1.5% | 7 | 3 | 3 |
Which project themes come up in Promptfoo job posts?
About this data
Sumble built this page. Sumble gives sales, marketing and other GTM teams technographics and hiring signals for the companies they sell to: the technologies each company uses, which teams are hiring and for what, and who reports to whom. That helps a team know who to contact, why now, and what to say.
Sumble covers more than 3.6 million companies, 93 million job posts collected since 2022 and 194 million employee profiles, and tracks more than 37,000 technologies. It finds which technologies a company uses by reading its job posts and its employees' public profiles.
Sumble has a free plan, and the same data is available through its API and MCP server.
A company counts when its own job posts or its employees' public profiles name the technology. Hiring is that technology's share of all job posts collected each month. Quotes are copied word for word from the companies' job posts.
Every figure on this page comes from Sumble's own analysis, and you won't find it outside Sumble.