Where AI Labs Are Pushing: The Expertise Being Hired, Week by Week

Method and definitions

The public job boards of the AI training platforms this site tracks, read every hour. Fields and languages are read from role titles. Listings only. Every figure is computed by one database query over the window shown, the same query for the live report and for every edition. Each figure states its sample beneath it.

Fixed panel

The platforms tracked for at least a full week before the first week counted. A platform added later never reads as growth, and neither do the old roles a newly tracked board surfaces in its first days.

Open roles in a week

The average number of the group's roles listed on the week's days (00:00 UTC each day), on the fixed panel.

Change

Open roles in the last complete week against the first, in percent. A group's change reads on its own when its open roles in the first week reach the weight of its family's average change, fitted on the family's own counts (below it the average weighs more than the group's own); other groups are marked as small samples and never ranked.

New listing

A role that first appeared during the week on a platform already tracked before that week. A platform's first week in this dataset is its back catalogue and is not counted as new. When this site changes how it reads a platform's board (a cap lifted, a page kind or department read too, a relevance rule changed), the roles that came into view or left it from that change to the end of its week are this site's reading, not the platform's hiring: they are not new listings or removals, and changes in open roles are measured like for like across it. Each platform's report says what changed.

Acceleration

New listings a week over the last four complete weeks against the four before, in percent (two against two in an edition month with four complete weeks). Shown when the weeks before hold at least the weight of the family's average pace in new listings, fitted on the family's own counts.

Appeared, vanished, began, stopped

Appeared: no role open on any day of the first week, at least one on average in the last; vanished, the reverse. Began: no new listing before the last weeks of the acceleration comparison, some in them; stopped, the reverse.

Expert field and language

Named in a role's title, matched as whole words with the vocabularies of the expert fields and languages reports. A role naming two counts for both.

Kind of work

Each role is classified from its title and description into one of the twelve kinds of AI training work this site tracks. Every kind links to its own page.

Window

Live: the last twelve complete ISO weeks (Monday to Sunday, UTC), from the week of 3 Aug 2026 at the earliest. Edition: the complete ISO weeks of one calendar month.

What this data cannot tell you

• Platforms recruit for their clients' projects, so hiring is a sign of where labs buy data, not a statement by any lab. Which lab is behind a role is not published.
• One platform posting a batch moves a group's numbers; the growth tables say how many platforms listed new roles in each group.
• A listing is not a hire. Some platforms keep evergreen roles open for months, and some post one listing per language or country.
• Generic titles hide the field or language of many roles, so a group's counts are a floor.
• Platforms that recruit without a public job board are not counted, and platforms added to the dataset after the window opens are left out of it.
• Before 3 Aug 2026 this dataset's feeds were still being added and tuned, so the series does not reach back further.

How the job feeds are read and roles are classified: site methodology. How fresh, complete and consistent the data is, checked every day: data quality and coverage.

Editions

The live report covers the last 12 complete weeks (from 3 Aug 2026 at the earliest) and moves on every Monday. Each complete month is also published as an edition, frozen two days after the month ends, so a figure you cite from an edition never moves.

• Live dataLast 12 complete weeks
• October 2026 editionFreezes on first reading
• September 2026 edition (this page)Frozen 11 Nov 2026
• August 2026 editionFreezes on first reading

Cite and reuse

Free to quote, chart and republish under CC BY 4.0 (creativecommons.org/licenses/by/4.0) with a link to this page. This edition is frozen, so its figures will read the same later.

@misc{aitrainingjobs_where_labs_are_pushing_2026_09,
  author = {{AITraining.jobs}},
  title = {Where AI Labs Are Pushing: The Expertise Being Hired, Week by Week, September 2026 edition},
  year = {2026},
  howpublished = {\url{https://cyberjobs.cc/research/where-labs-are-pushing/2026-09}},
}

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