{
"schema_version": "1.0",
"generated_at": "2026-07-30T06:34:52.562Z",
"source": {
"name": "AI Trainer Jobs",
"url": "https://aitrainer.work/open-data",
"description": "Aggregate statistics on the AI training and data-annotation labour market, compiled from listings observed across public hiring platforms."
},
"license": {
"name": "Creative Commons Attribution 4.0 International",
"id": "CC-BY-4.0",
"url": "https://creativecommons.org/licenses/by/4.0/",
"terms": "Free to use, republish, and build on, including commercially. The only requirement is a visible credit linking back to the source page.",
"attribution_text": "Data from AI Trainer Jobs (aitrainer.work/open-data), licensed under CC BY 4.0 (creativecommons.org/licenses/by/4.0)",
"attribution_html": "Data from AI Trainer Jobs, licensed under CC BY 4.0."
},
"methodology": {
"corpus": "Every listing observed since tracking began, whether or not it is still open today. Listings are not split into \"active\" and \"expired\" because that split reflects when this file was generated, not the market.",
"first_seen": "The date this project first observed a listing, not the date the platform published it. A listing posted before tracking began on that platform is dated to the day it was first seen.",
"backfill": "The first month of coverage for each platform contains a backlog of listings that were already open. Months where this applies are marked includes_backfill: true and should be excluded from growth comparisons.",
"pay": "Hourly-priced listings only, in USD. Where a listing advertises a range, the midpoint is used. Rates below $3/hr or above $400/hr are treated as parsing errors and excluded. Per-task, monthly, and annual listings are excluded from pay figures.",
"fields": "Field (domain) is assigned from the listing title, description, and platform tags. Roughly a third of listings carry no confident field assignment and are excluded from field breakdowns.",
"lifespan": "Days between first and last observation of a listing. Listings still open at generation time have no end date and are excluded, which biases this figure slightly downward.",
"sample_gating": "Any breakdown with fewer than 10 listings is omitted rather than published as a noisy figure.",
"known_limitations": "Coverage is not the whole market: it is the platforms this project tracks. Platforms differ in how completely they disclose pay, so per-platform sample sizes vary widely. Always read median figures alongside sample_size."
},
"coverage": {
"listings_observed": 4433,
"platforms_tracked": 13,
"observation_window": {
"start": "2025-12-30",
"end": "2026-07-30"
},
"platforms": [
{
"platform": "micro1",
"display_name": "Micro1",
"listings_observed": 1654,
"coverage_start": "2026-01-03",
"coverage_end": "2026-07-30"
},
{
"platform": "mercor",
"display_name": "Mercor",
"listings_observed": 1269,
"coverage_start": "2026-01-02",
"coverage_end": "2026-07-29"
},
{
"platform": "turing",
"display_name": "Turing",
"listings_observed": 484,
"coverage_start": "2026-03-10",
"coverage_end": "2026-07-16"
},
{
"platform": "sme_careers",
"display_name": "SME Careers",
"listings_observed": 289,
"coverage_start": "2026-02-09",
"coverage_end": "2026-07-23"
},
{
"platform": "alignerr",
"display_name": "Alignerr",
"listings_observed": 250,
"coverage_start": "2026-03-24",
"coverage_end": "2026-07-20"
},
{
"platform": "ethos",
"display_name": "Ethos",
"listings_observed": 136,
"coverage_start": "2026-03-23",
"coverage_end": "2026-07-29"
},
{
"platform": "afterquery",
"display_name": "AfterQuery",
"listings_observed": 115,
"coverage_start": "2026-06-08",
"coverage_end": "2026-07-29"
},
{
"platform": "handshake",
"display_name": "Handshake",
"listings_observed": 100,
"coverage_start": "2026-01-01",
"coverage_end": "2026-05-15"
},
{
"platform": "mindrift",
"display_name": "Mindrift",
"listings_observed": 57,
"coverage_start": "2026-01-05",
"coverage_end": "2026-01-20"
},
{
"platform": "outlier",
"display_name": "Outlier",
"listings_observed": 38,
"coverage_start": "2025-12-30",
"coverage_end": "2025-12-30"
},
{
"platform": "vetto",
"display_name": "Vetto",
"listings_observed": 17,
"coverage_start": "2026-03-26",
"coverage_end": "2026-06-10"
},
{
"platform": "terac",
"display_name": "Terac",
"listings_observed": 14,
"coverage_start": "2026-07-21",
"coverage_end": "2026-07-25"
},
{
"platform": "rex",
"display_name": "Rex",
"listings_observed": 10,
"coverage_start": "2026-03-23",
"coverage_end": "2026-05-21"
}
]
},
"pay": {
"currency": "USD",
"basis": "hourly",
"overall": {
"median_hourly_usd": 55,
"p25_hourly_usd": 37.5,
"p75_hourly_usd": 85,
"sample_size": 4208
},
"by_platform": [
{
"platform": "ethos",
"display_name": "Ethos",
"median_hourly_usd": 100,
"p25_hourly_usd": 75,
"p75_hourly_usd": 100,
"sample_size": 136,
"note": "Ethos is an expert network sourcing senior/PhD-level consulting placements for undisclosed third-party clients, not a standard crowdsourced AI-training platform — its pay figures reflect that different labor market rather than a directly comparable \"platform rate.\""
},
{
"platform": "handshake",
"display_name": "Handshake",
"median_hourly_usd": 90,
"p25_hourly_usd": 77.3,
"p75_hourly_usd": 120,
"sample_size": 100
},
{
"platform": "mercor",
"display_name": "Mercor",
"median_hourly_usd": 80,
"p25_hourly_usd": 50,
"p75_hourly_usd": 100,
"sample_size": 1239
},
{
"platform": "mindrift",
"display_name": "Mindrift",
"median_hourly_usd": 55,
"p25_hourly_usd": 38,
"p75_hourly_usd": 73,
"sample_size": 52
},
{
"platform": "vetto",
"display_name": "Vetto",
"median_hourly_usd": 52,
"p25_hourly_usd": 40,
"p75_hourly_usd": 60,
"sample_size": 17
},
{
"platform": "sme_careers",
"display_name": "SME Careers",
"median_hourly_usd": 50,
"p25_hourly_usd": 25.9,
"p75_hourly_usd": 75,
"sample_size": 284
},
{
"platform": "micro1",
"display_name": "Micro1",
"median_hourly_usd": 47.5,
"p25_hourly_usd": 37.5,
"p75_hourly_usd": 73.5,
"sample_size": 1593
},
{
"platform": "alignerr",
"display_name": "Alignerr",
"median_hourly_usd": 45,
"p25_hourly_usd": 30,
"p75_hourly_usd": 80,
"sample_size": 249
},
{
"platform": "turing",
"display_name": "Turing",
"median_hourly_usd": 40,
"p25_hourly_usd": 22,
"p75_hourly_usd": 47,
"sample_size": 484
},
{
"platform": "outlier",
"display_name": "Outlier",
"median_hourly_usd": 25,
"p25_hourly_usd": 17.5,
"p75_hourly_usd": 25,
"sample_size": 38
}
],
"by_field": [
{
"field": "Legal",
"median_hourly_usd": 100,
"p25_hourly_usd": 70,
"p75_hourly_usd": 120,
"sample_size": 127
},
{
"field": "Healthcare",
"median_hourly_usd": 90,
"p25_hourly_usd": 65,
"p75_hourly_usd": 145,
"sample_size": 170
},
{
"field": "Accounting",
"median_hourly_usd": 83.8,
"p25_hourly_usd": 45.6,
"p75_hourly_usd": 100,
"sample_size": 50
},
{
"field": "Finance",
"median_hourly_usd": 80,
"p25_hourly_usd": 50,
"p75_hourly_usd": 118.8,
"sample_size": 138
},
{
"field": "Business",
"median_hourly_usd": 75,
"p25_hourly_usd": 50,
"p75_hourly_usd": 100,
"sample_size": 403
},
{
"field": "STEM",
"median_hourly_usd": 70,
"p25_hourly_usd": 50,
"p75_hourly_usd": 85,
"sample_size": 324
},
{
"field": "Design",
"median_hourly_usd": 70,
"p25_hourly_usd": 46.3,
"p75_hourly_usd": 82.5,
"sample_size": 39
},
{
"field": "Humanities",
"median_hourly_usd": 70,
"p25_hourly_usd": 50,
"p75_hourly_usd": 82.5,
"sample_size": 41
},
{
"field": "Data Science",
"median_hourly_usd": 57.5,
"p25_hourly_usd": 40.6,
"p75_hourly_usd": 85,
"sample_size": 138
},
{
"field": "Mathematics",
"median_hourly_usd": 56.8,
"p25_hourly_usd": 40.6,
"p75_hourly_usd": 83.8,
"sample_size": 46
},
{
"field": "Coding",
"median_hourly_usd": 55,
"p25_hourly_usd": 38,
"p75_hourly_usd": 73,
"sample_size": 40
},
{
"field": "Search Evaluation",
"median_hourly_usd": 55,
"p25_hourly_usd": 25.5,
"p75_hourly_usd": 73,
"sample_size": 11
},
{
"field": "Generalist",
"median_hourly_usd": 51,
"p25_hourly_usd": 36,
"p75_hourly_usd": 85,
"sample_size": 475
},
{
"field": "Software Engineering",
"median_hourly_usd": 50,
"p25_hourly_usd": 40,
"p75_hourly_usd": 75,
"sample_size": 437
},
{
"field": "Psychology",
"median_hourly_usd": 41.3,
"p25_hourly_usd": 37.6,
"p75_hourly_usd": 96.3,
"sample_size": 34
},
{
"field": "Writing",
"median_hourly_usd": 40,
"p25_hourly_usd": 25,
"p75_hourly_usd": 66.9,
"sample_size": 98
},
{
"field": "QA Testing",
"median_hourly_usd": 40,
"p25_hourly_usd": 30,
"p75_hourly_usd": 63.8,
"sample_size": 78
},
{
"field": "Languages",
"median_hourly_usd": 35,
"p25_hourly_usd": 21,
"p75_hourly_usd": 50,
"sample_size": 429
},
{
"field": "Voice Acting",
"median_hourly_usd": 35,
"p25_hourly_usd": 18,
"p75_hourly_usd": 50,
"sample_size": 94
}
],
"by_month": [
{
"month": "2025-12",
"median_hourly_usd": 25,
"sample_size": 38
},
{
"month": "2026-01",
"median_hourly_usd": 60,
"sample_size": 803
},
{
"month": "2026-02",
"median_hourly_usd": 60,
"sample_size": 331
},
{
"month": "2026-03",
"median_hourly_usd": 50,
"sample_size": 509
},
{
"month": "2026-04",
"median_hourly_usd": 47,
"sample_size": 696
},
{
"month": "2026-05",
"median_hourly_usd": 65,
"sample_size": 558
},
{
"month": "2026-06",
"median_hourly_usd": 60,
"sample_size": 632
},
{
"month": "2026-07",
"median_hourly_usd": 55,
"sample_size": 641
}
]
},
"volume": {
"total_listings_observed": 4433,
"by_field": [
{
"field": "Generalist",
"listings_observed": 502,
"share_pct": 14.8
},
{
"field": "Software Engineering",
"listings_observed": 463,
"share_pct": 13.6
},
{
"field": "Languages",
"listings_observed": 438,
"share_pct": 12.9
},
{
"field": "Business",
"listings_observed": 429,
"share_pct": 12.6
},
{
"field": "STEM",
"listings_observed": 358,
"share_pct": 10.5
},
{
"field": "Healthcare",
"listings_observed": 177,
"share_pct": 5.2
},
{
"field": "Data Science",
"listings_observed": 163,
"share_pct": 4.8
},
{
"field": "Finance",
"listings_observed": 151,
"share_pct": 4.4
},
{
"field": "Legal",
"listings_observed": 135,
"share_pct": 4
},
{
"field": "Writing",
"listings_observed": 104,
"share_pct": 3.1
},
{
"field": "Voice Acting",
"listings_observed": 94,
"share_pct": 2.8
},
{
"field": "QA Testing",
"listings_observed": 78,
"share_pct": 2.3
},
{
"field": "Accounting",
"listings_observed": 59,
"share_pct": 1.7
},
{
"field": "Mathematics",
"listings_observed": 50,
"share_pct": 1.5
},
{
"field": "Design",
"listings_observed": 45,
"share_pct": 1.3
},
{
"field": "Humanities",
"listings_observed": 42,
"share_pct": 1.2
},
{
"field": "Coding",
"listings_observed": 42,
"share_pct": 1.2
},
{
"field": "Psychology",
"listings_observed": 35,
"share_pct": 1
},
{
"field": "Search Evaluation",
"listings_observed": 14,
"share_pct": 0.4
},
{
"field": "Creative",
"listings_observed": 7,
"share_pct": 0.2
},
{
"field": "IT & Systems",
"listings_observed": 3,
"share_pct": 0.1
},
{
"field": "Chemistry",
"listings_observed": 3,
"share_pct": 0.1
},
{
"field": "Biology",
"listings_observed": 2,
"share_pct": 0.1
},
{
"field": "Physics",
"listings_observed": 2,
"share_pct": 0.1
},
{
"field": "Voice",
"listings_observed": 1,
"share_pct": 0
},
{
"field": "Creative & Design",
"listings_observed": 1,
"share_pct": 0
},
{
"field": "Education",
"listings_observed": 1,
"share_pct": 0
},
{
"field": "General",
"listings_observed": 1,
"share_pct": 0
}
],
"by_month": [
{
"month": "2025-12",
"new_listings": 0,
"backfilled_listings_excluded": 38,
"platforms_contributing": 0,
"by_field": {},
"by_platform": {}
},
{
"month": "2026-01",
"new_listings": 0,
"backfilled_listings_excluded": 827,
"platforms_contributing": 0,
"by_field": {},
"by_platform": {}
},
{
"month": "2026-02",
"new_listings": 333,
"backfilled_listings_excluded": 1,
"platforms_contributing": 2,
"by_field": {
"Software Engineering": 24,
"Design": 8,
"Generalist": 52,
"Languages": 63,
"STEM": 41,
"Voice Acting": 2,
"Writing": 29,
"Finance": 8,
"Accounting": 7,
"Business": 29,
"Data Science": 36,
"Mathematics": 3,
"Legal": 4,
"Healthcare": 19,
"Humanities": 3,
"Psychology": 4,
"IT & Systems": 1
},
"by_platform": {
"micro1": 233,
"mercor": 100
}
},
{
"month": "2026-03",
"new_listings": 378,
"backfilled_listings_excluded": 139,
"platforms_contributing": 2,
"by_field": {
"Accounting": 4,
"Software Engineering": 5,
"Generalist": 12,
"Healthcare": 9,
"Finance": 4,
"Languages": 15,
"Legal": 6,
"STEM": 13,
"Writing": 4,
"Business": 15,
"Mathematics": 1,
"Humanities": 2,
"Data Science": 7,
"Voice Acting": 8,
"Design": 2,
"Psychology": 1
},
"by_platform": {
"mercor": 170,
"micro1": 208
}
},
{
"month": "2026-04",
"new_listings": 701,
"backfilled_listings_excluded": 0,
"platforms_contributing": 6,
"by_field": {
"Software Engineering": 91,
"Generalist": 43,
"Business": 20,
"Legal": 11,
"Accounting": 5,
"STEM": 15,
"Languages": 37,
"Voice Acting": 1,
"Healthcare": 14,
"Design": 4,
"Writing": 6,
"Finance": 22,
"Data Science": 4,
"Mathematics": 4,
"Humanities": 2,
"Psychology": 2
},
"by_platform": {
"alignerr": 103,
"micro1": 292,
"mercor": 156,
"turing": 143,
"ethos": 4,
"vetto": 3
}
},
{
"month": "2026-05",
"new_listings": 569,
"backfilled_listings_excluded": 0,
"platforms_contributing": 8,
"by_field": {
"Software Engineering": 47,
"STEM": 52,
"Finance": 21,
"Business": 83,
"Legal": 34,
"Languages": 40,
"Generalist": 64,
"Accounting": 7,
"Design": 5,
"Healthcare": 24,
"Data Science": 12,
"Mathematics": 4,
"Writing": 9,
"Humanities": 7,
"Voice Acting": 3,
"Psychology": 1,
"Creative": 5
},
"by_platform": {
"micro1": 218,
"alignerr": 53,
"mercor": 143,
"rex": 2,
"turing": 70,
"ethos": 60,
"handshake": 22,
"vetto": 1
}
},
{
"month": "2026-06",
"new_listings": 647,
"backfilled_listings_excluded": 107,
"platforms_contributing": 7,
"by_field": {
"Software Engineering": 52,
"Business": 58,
"STEM": 53,
"Generalist": 77,
"Mathematics": 11,
"Legal": 17,
"Data Science": 26,
"Healthcare": 22,
"Psychology": 7,
"Voice Acting": 19,
"Writing": 16,
"Finance": 22,
"Languages": 80,
"Design": 4,
"Humanities": 8,
"Accounting": 4,
"Creative": 1
},
"by_platform": {
"micro1": 145,
"alignerr": 86,
"mercor": 260,
"turing": 55,
"ethos": 14,
"sme_careers": 85,
"vetto": 2
}
},
{
"month": "2026-07",
"new_listings": 679,
"backfilled_listings_excluded": 14,
"platforms_contributing": 7,
"by_field": {
"Software Engineering": 100,
"Generalist": 58,
"STEM": 84,
"Data Science": 11,
"Business": 82,
"Finance": 14,
"Healthcare": 30,
"Legal": 32,
"Accounting": 11,
"Languages": 81,
"Design": 6,
"Mathematics": 9,
"Voice Acting": 54,
"Writing": 11,
"QA Testing": 77,
"Creative": 1,
"Psychology": 4,
"Humanities": 1
},
"by_platform": {
"micro1": 118,
"ethos": 45,
"turing": 116,
"mercor": 188,
"alignerr": 1,
"afterquery": 8,
"sme_careers": 203
}
}
]
},
"listing_lifespan": {
"unit": "days",
"overall": {
"median_days_open": 25.9,
"p25_days_open": 5.4,
"p75_days_open": 51.1,
"sample_size": 2354
},
"by_field": [
{
"field": "STEM",
"median_days_open": 8.6,
"p25_days_open": 0,
"p75_days_open": 42.1,
"sample_size": 108
},
{
"field": "Coding",
"median_days_open": 15.2,
"p25_days_open": 15.2,
"p75_days_open": 15.2,
"sample_size": 42
},
{
"field": "Search Evaluation",
"median_days_open": 15.2,
"p25_days_open": 15.2,
"p75_days_open": 15.2,
"sample_size": 14
},
{
"field": "Legal",
"median_days_open": 16,
"p25_days_open": 5.5,
"p75_days_open": 54.5,
"sample_size": 19
},
{
"field": "Mathematics",
"median_days_open": 16.3,
"p25_days_open": 12.5,
"p75_days_open": 35.3,
"sample_size": 14
},
{
"field": "Design",
"median_days_open": 16.9,
"p25_days_open": 5.4,
"p75_days_open": 39.6,
"sample_size": 13
},
{
"field": "Software Engineering",
"median_days_open": 21.8,
"p25_days_open": 3.4,
"p75_days_open": 30.4,
"sample_size": 191
},
{
"field": "Languages",
"median_days_open": 27,
"p25_days_open": 6.6,
"p75_days_open": 55.1,
"sample_size": 164
},
{
"field": "Writing",
"median_days_open": 29,
"p25_days_open": 3.9,
"p75_days_open": 50.6,
"sample_size": 50
},
{
"field": "Business",
"median_days_open": 29.3,
"p25_days_open": 9.9,
"p75_days_open": 58.7,
"sample_size": 163
},
{
"field": "Generalist",
"median_days_open": 30.4,
"p25_days_open": 9.8,
"p75_days_open": 56.6,
"sample_size": 269
},
{
"field": "Healthcare",
"median_days_open": 30.4,
"p25_days_open": 5.4,
"p75_days_open": 50.9,
"sample_size": 73
},
{
"field": "Humanities",
"median_days_open": 32.7,
"p25_days_open": 3.3,
"p75_days_open": 48.6,
"sample_size": 11
},
{
"field": "Data Science",
"median_days_open": 35.2,
"p25_days_open": 20.2,
"p75_days_open": 56.2,
"sample_size": 69
},
{
"field": "Accounting",
"median_days_open": 35.2,
"p25_days_open": 16,
"p75_days_open": 58.7,
"sample_size": 21
},
{
"field": "Psychology",
"median_days_open": 39.5,
"p25_days_open": 26.1,
"p75_days_open": 48,
"sample_size": 20
},
{
"field": "Finance",
"median_days_open": 47,
"p25_days_open": 30.4,
"p75_days_open": 56.2,
"sample_size": 60
}
],
"by_platform": [
{
"platform": "sme_careers",
"display_name": "SME Careers",
"median_days_open": 0,
"p25_days_open": 0,
"p75_days_open": 0,
"sample_size": 80
},
{
"platform": "outlier",
"display_name": "Outlier",
"median_days_open": 0,
"p25_days_open": 0,
"p75_days_open": 0,
"sample_size": 38
},
{
"platform": "mercor",
"display_name": "Mercor",
"median_days_open": 3.1,
"p25_days_open": 0,
"p75_days_open": 11.8,
"sample_size": 326
},
{
"platform": "alignerr",
"display_name": "Alignerr",
"median_days_open": 15,
"p25_days_open": 0,
"p75_days_open": 31.5,
"sample_size": 217
},
{
"platform": "mindrift",
"display_name": "Mindrift",
"median_days_open": 15.2,
"p25_days_open": 15.2,
"p75_days_open": 15.2,
"sample_size": 57
},
{
"platform": "turing",
"display_name": "Turing",
"median_days_open": 30.4,
"p25_days_open": 7.3,
"p75_days_open": 30.4,
"sample_size": 245
},
{
"platform": "ethos",
"display_name": "Ethos",
"median_days_open": 32.6,
"p25_days_open": 1,
"p75_days_open": 61.9,
"sample_size": 88
},
{
"platform": "micro1",
"display_name": "Micro1",
"median_days_open": 38.6,
"p25_days_open": 19.1,
"p75_days_open": 56.2,
"sample_size": 1182
},
{
"platform": "vetto",
"display_name": "Vetto",
"median_days_open": 56.1,
"p25_days_open": 44.7,
"p75_days_open": 56.1,
"sample_size": 11
},
{
"platform": "handshake",
"display_name": "Handshake",
"median_days_open": 68.8,
"p25_days_open": 5.4,
"p75_days_open": 102.4,
"sample_size": 100
}
]
},
"work_terms": {
"note": "Extracted from listing text. Only a subset of listings state these terms explicitly.",
"interview_required": {
"pct_requiring_interview": 93,
"sample_size": 191
},
"weekly_hours": {
"pct_full_time_commitment": 10,
"sample_size": 596
},
"contract_duration_weeks_by_field": [
{
"field": "Generalist",
"median_weeks": 3.5,
"sample_size": 10
},
{
"field": "Finance",
"median_weeks": 4,
"sample_size": 22
},
{
"field": "Business",
"median_weeks": 4,
"sample_size": 33
},
{
"field": "Data Science",
"median_weeks": 4,
"sample_size": 39
},
{
"field": "Languages",
"median_weeks": 8,
"sample_size": 22
},
{
"field": "STEM",
"median_weeks": 8,
"sample_size": 29
},
{
"field": "Software Engineering",
"median_weeks": 9,
"sample_size": 59
},
{
"field": "Voice Acting",
"median_weeks": 26,
"sample_size": 40
}
]
},
"snapshot_url": "https://aitrainer.work/data/market-trends/market-trends-2026-07.json"
}