Skip to content

Research report ยท August 2026 edition

AI Training Platforms Compared

On 31 Aug 2026, 1,591 AI training roles were open across the job boards of 14 platforms; Invisible listed the most (32.9%) and Mercor advertised the highest median pay ($85/hr).

Read the month's story: The AI Training Job Market in August 2026

Data window
1 Aug 2026 to 31 Aug 2026
31 days, UTC
Frozen
10 Oct 2026, 08:03 UTC
These figures will not change
Source
The public job boards of the AI training platforms this site tracks, read every day.
Method
Version 1. Definitions
CC BY 4.0, how to cite

Every figure on this page as CSV and JSON, sent to your work email.

Key findings

  1. 1

    Invisible (32.9%), Mercor (20.4%) and micro1 (18.4%) listed the most open roles on 31 Aug 2026; the five largest of the 14 platforms held 86.7% of all open roles.

    Figure 1
  2. 2

    Of the 9 platforms with at least 8 roles stating a rate, Mercor advertised the highest median, $85/hr, and Outlier (Scale AI) the lowest, $25/hr.

    Figure 2
  3. 3

    3 of 12 platforms with at least 10 open roles stated an hourly rate on every one; TransPerfect DataForce stated one on none of its 31 roles.

    Figure 2
  4. 4

    micro1 opened all 292 of its roles to applicants anywhere, the most of any platform; Mindrift opened none of its 13 roles, the fewest.

    Figure 3
  5. 5

    Roles came down fastest at Mindrift (a median of 7.3 days listed) and stayed up longest at Outlier (Scale AI) (428.5 days).

    Figure 4

Figure 1

Open roles and listing activity by platform

Which platforms list the most AI training roles, and which are growing?

PlatformOpen on 31 Aug 2026Share
Invisible
523
32.9%
Mercor
325
20.4%
micro1
292
18.4%
AfterQuery
161
10.1%
Sigma AI
79
5.0%
Braintrust
69
4.3%
TransPerfect DataForce
31
1.9%
xAI (SpaceXAI)
27
1.7%
Appen
24
1.5%
Terac
18
1.1%
Alignerr
17
1.1%
Mindrift
13
0.8%
Outlier (Scale AI)
9
0.6%
Remotasks
3
0.2%

Sample. 1,591 roles open at the end of 31 Aug 2026 on the 14 platforms whose public job boards AITraining.jobs reads daily; listings from 1 Aug 2026 to 31 Aug 2026.

New listings leave out a platform's first week in this dataset (its back catalogue). Change compares the platform's open roles at the start and the end of the window.

A platform that posts one listing per language or country counts each one: these are listings, not people hired.

Source. AITraining.jobs Research, AI Training Platforms Compared, August 2026 edition.

Figure 2

Advertised hourly pay by platform

What does each platform advertise it pays, and how often does it say?

PlatformMedian per hourMiddle halfRoles stating pay
Mercor
$85
$60 to $10097.2%
AfterQuery
$80
$68 to $108100.0%
micro1
$68
$45 to $10099.0%
Invisible
$65
$37 to $6599.4%
Mindrift
$50
$35 to $90100.0%
Alignerr
$45
$35 to $95100.0%
xAI (SpaceXAI)
$40
$40 to $4092.6%
Braintrust
$35
$20 to $5479.7%
Outlier (Scale AI)
$25
$20 to $31100.0%
AppenSmall sample
n/a
n/a16.7%
RemotasksSmall sample
n/a
n/a66.7%
Sigma AISmall sample
n/a
n/a0.0%
TeracSmall sample
n/a
n/a38.9%
TransPerfect DataForceSmall sample
n/a
n/a0.0%

Sample. The 1,418 roles open on 31 Aug 2026 that state an hourly rate.

Pay is the hourly figure the posting advertises (the middle of a stated range). The middle half runs from the 25th to the 75th percentile.

A median needs at least 8 roles stating a rate; platforms below that are marked as a small sample and show n/a.

Source. AITraining.jobs Research, AI Training Platforms Compared, August 2026 edition.

Figure 3

Who may apply, by platform

Which platforms hire worldwide, and which limit roles to some countries?

PlatformOpen worldwideOnly listed countries
Alignerr
100.0%
0.0%
micro1
100.0%
0.0%
xAI (SpaceXAI)
92.6%
7.4%
Mercor
82.8%
17.2%
TransPerfect DataForce
38.7%
61.3%
Invisible
34.8%
65.2%
Sigma AI
13.9%
86.1%
Outlier (Scale AI)Small sample
11.1%
88.9%
AfterQuery
3.1%
0.0%
Braintrust
2.9%
97.1%
Appen
0.0%
100.0%
Mindrift
0.0%
100.0%
RemotasksSmall sample
0.0%
100.0%
Terac
0.0%
100.0%

Sample. 1,591 roles open on 31 Aug 2026; shares of each platform's own open roles.

The rule is read from each posting's location text. Countries named: distinct countries in the platform's include and exclude lists.

Source. AITraining.jobs Research, AI Training Platforms Compared, August 2026 edition.

Figure 4

How long roles stay listed, by platform

Which platforms fill or pull their roles fastest?

PlatformMedian days listedOpen roles listed in the last 30 days
Outlier (Scale AI)
428.5
22.2%
AfterQuery
133.3
56.5%
TransPerfect DataForce
75.8
54.8%
Mercor
32.2
36.3%
Appen
26.2
20.8%
xAI (SpaceXAI)
21.8
59.3%
Braintrust
15.0
42.0%
micro1
13.6
72.3%
Terac
12.0
72.2%
Mindrift
7.3
76.9%
AlignerrSmall sample
n/a
5.9%
InvisibleSmall sample
n/a
0.0%
RemotasksSmall sample
n/a
0.0%
Sigma AISmall sample
n/a
0.0%

Sample. Roles removed from 1 Aug 2026 to 31 Aug 2026 with a known listing date, and roles open on 31 Aug 2026.

Days listed: from the listing date the job board states (or the first day the role appeared in the feed) to the last day it was seen.

A median needs at least 10 removed roles.

Source. AITraining.jobs Research, AI Training Platforms Compared, August 2026 edition.

Figure 5

What each platform hires for

Which kind of AI training work does each platform list most?

PlatformMain kind of workIts share
InvisibleMultilingual & Localization
46.5%
MercorLaw, Medicine & Finance
35.1%
micro1AI Evaluation & Rating (RLHF)
35.6%
AfterQueryLaw, Medicine & Finance
69.6%
Sigma AIMultilingual & Localization
91.1%
BraintrustMultilingual & Localization
42.0%
TransPerfect DataForceMultilingual & Localization
35.5%
xAI (SpaceXAI)Multilingual & Localization
85.2%
AppenTranscription, Audio & Speech
75.0%
TeracLaw, Medicine & Finance
55.6%
AlignerrLaw, Medicine & Finance
47.1%
MindriftAgentic Tasks & RL Environments
53.8%
Outlier (Scale AI)Multilingual & Localization
66.7%
RemotasksData Annotation & Labeling
33.3%

Sample. 1,591 roles open on 31 Aug 2026, by the kind of work each is classified as.

Kinds of work are this site's twelve categories of AI training work, each classified from the role's title and description.

Source. AITraining.jobs Research, AI Training Platforms Compared, August 2026 edition.

For labs, data vendors and researchers

Buy the data behind this report

The figures above are a summary. Behind them are records we collect ourselves, every day:

  • 9,572 roles tracked, each with its history

    Every role on 29 job boards, read daily since 13 Jul 2026: its pay and place, and the first and last day it was open.

  • 6,200 apply clicks in 28 days

    Which roles people actually apply to, by field, pay and kind of work. It happens on this site, so nobody else can count it.

  • 39 lab and vendor hiring boards

    The job boards of 25 AI labs and 14 human-data vendors, read every day: who is hiring for human data, and who is hiring to buy it.

What you can buy

  • The records

    The rows behind any figure, with their history, not only the totals.

  • A regular feed

    The same figures every week or month, as files.

  • A custom cut or benchmark

    Your countries, languages or fields, or your own platform against the market.

Method and definitions

The public job boards of the AI training platforms this site tracks, read every day. 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.

Coverage
The platforms whose public job boards AITraining.jobs reads in full every day. Each figure states how many were read.
Open role
A role listed by a given day and still in its platform's feed that day.
New listing
A role that first appeared during the window 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.
Removed listing
A role that left its platform's feed during the window.
Days listed
From a removed role's listing date to the last day it was seen in its feed.
Advertised pay
The hourly figure a posting states (the middle of a stated range). Medians need at least 8 roles stating a rate; the middle half runs from the 25th to the 75th percentile.
Location rule
Read from each posting's location text and, where that names no country, from what the posting's own description states: open worldwide, worldwide except listed countries, only listed countries, or no rule stated.
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, from AI evaluation and coding to multilingual and audio work. Every kind links to its own page.
Window
Live: the last 28 complete days, in UTC. Edition: one calendar month, in UTC.

What this data cannot tell you

  • Platforms that recruit without a public job board are not counted. Several large ones invite workers to projects directly.
  • A listing is not a hire. Some platforms keep evergreen roles open for months, and some post one listing per language or country.
  • Pay is what postings advertise, not what workers are paid after bonuses, tiers or rejected tasks.

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 28 complete days and changes every day. 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.

Cite and reuse

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

Citation

AITraining.jobs (2026). AI Training Platforms Compared, August 2026 edition. https://www.aitraining.team/research/platform-scorecard/2026-08

BibTeX

@misc{aitrainingjobs_platform_scorecard_2026_08,
  author = {{AITraining.jobs}},
  title = {AI Training Platforms Compared, August 2026 edition},
  year = {2026},
  howpublished = {\url{https://www.aitraining.team/research/platform-scorecard/2026-08}},
}
Data: every figure as CSV (one line per value) and JSON, sent to your work email.Pay and open-roles data

More research

All 78 research reports