Machine Relations Index (MRI)

Measurement window2026-05-10 to 2026-08-17

Published 2026-08-17 from the current dataset release covering 19,118 cited domains and 101,918 source events.

Sample threshold10/7

Rates publish after enough answer runs across distinct observation dates.

Segment coverage29.9%

47 validated segments, 104 still collecting observations.

Citation leaders

Top cited domains

Reddit#1 overall · Community and social platform100th percentile overall · 1,646 cited runs · 4 enginesYouTube#2 overall · Search or media platform100th percentile overall · 1,286 cited runs · 6 enginesLinkedIn#3 overall · Community and social platform100th percentile overall · 909 cited runs · 6 enginesMedium#1 of 1130 classified editorial publications · Editorial publication100th percentile overall · 752 cited runs · 6 enginesForbes#2 of 1130 classified editorial publications · Editorial publication100th percentile overall · 518 cited runs · 6 enginesNIH#6 overall · Academic and government source100th percentile overall · 416 cited runs · 6 enginesGartner.com#7 overall · Analyst and consulting research100th percentile overall · 411 cited runs · 6 enginesArxiv.org#8 overall · Academic and government source100th percentile overall · 384 cited runs · 6 engines

Source universe

Cited source index

Initial view shows the top 50 domains from 19,118 total.

Data through 2026-08-17

All classesEditorial publicationAnalyst and consulting researchMarket and company databaseAcademic and government sourceCommunity and social platformWire and press-release distributionSearch or media platformVendor-owned sourceOther observed sourceAll enginesChatGPTClaudeGeminiGoogle AI ModeGoogle AI OverviewsPerplexityAll confidenceConfidence AConfidence BConfidence C

Row	Source	Class	Citation rate	Cited runs	Engines	Confidence	Strata
1	Redditreddit.com · #1 of 19,118 observed domains	Community and social platform	13.42%	1,646		Confidence A	74
2	YouTubeyoutube.com · #2 of 19,118 observed domains	Search or media platform	10.49%	1,286		Confidence A	68
3	LinkedInlinkedin.com · #3 of 19,118 observed domains	Community and social platform	7.41%	909		Confidence A	56
4	Mediummedium.com · #1 of 1130 classified editorial publications	Editorial publication	6.13%	752		Confidence A	49
5	Forbesforbes.com · #2 of 1130 classified editorial publications	Editorial publication	4.22%	518		Confidence A	43
6	NIHnih.gov · #6 of 19,118 observed domains	Academic and government source	3.39%	416		Confidence A	33
7	Gartner.comgartner.com · #7 of 19,118 observed domains	Analyst and consulting research	3.35%	411		Confidence A	22
8	Arxiv.orgarxiv.org · #8 of 19,118 observed domains	Academic and government source	3.13%	384		Confidence A	31
9	G2g2.com · #9 of 19,118 observed domains	Market and company database	3.07%	377		Confidence A	23
10	Ibm.comibm.com · #10 of 19,118 observed domains	Vendor-owned source	2.46%	302		Confidence A	24
11	Healthline.comhealthline.com · #11 of 19,118 observed domains	Other observed source	2.42%	297		Confidence B	12
12	Landbase.comlandbase.com · #12 of 19,118 observed domains	Vendor-owned source	2.42%	297		Confidence B	8
13	Yahooyahoo.com · #3 of 1130 classified editorial publications	Editorial publication	2.41%	295		Confidence B	28
14	Microsoft.commicrosoft.com · #14 of 19,118 observed domains	Vendor-owned source	2.37%	291		Confidence B	30
15	TechRadartechradar.com · #4 of 1130 classified editorial publications	Editorial publication	2.23%	274		Confidence B	36
16	Crunchbase.comcrunchbase.com · #16 of 19,118 observed domains	Market and company database	2.21%	271		Confidence B	7
17	Nerdwallet.comnerdwallet.com · #5 of 1130 classified editorial publications	Editorial publication	1.92%	236		Confidence B	9
18	Substack.comsubstack.com · #18 of 19,118 observed domains	Community and social platform	1.86%	228		Confidence B	31
19	Paloaltonetworks.compaloaltonetworks.com · #19 of 19,118 observed domains	Vendor-owned source	1.75%	215		Confidence B	14
20	Amazon.comamazon.com · #6 of 1130 classified editorial publications	Editorial publication	1.68%	206		Confidence B	34
21	Dev.todev.to · #21 of 19,118 observed domains	Community and social platform	1.61%	197		Confidence B	24
22	Sentinelone.comsentinelone.com · #22 of 19,118 observed domains	Vendor-owned source	1.60%	196		Confidence B	10
23	Facebook.comfacebook.com · #23 of 19,118 observed domains	Community and social platform	1.57%	193		Confidence B	53
24	Grandviewresearch.comgrandviewresearch.com · #24 of 19,118 observed domains	Market and company database	1.53%	188		Confidence B	8
25	TechTargettechtarget.com · #7 of 1130 classified editorial publications	Editorial publication	1.53%	188		Confidence B	24
26	Deloitte.comdeloitte.com · #26 of 19,118 observed domains	Analyst and consulting research	1.48%	182		Confidence B	10
27	Wikipediawikipedia.org · #27 of 19,118 observed domains	Academic and government source	1.42%	174		Confidence B	29
28	PR Newswireprnewswire.com · #8 of 1130 classified editorial publications	Editorial publication	1.37%	168		Confidence B	23
29	Y Combinatorycombinator.com · #29 of 19,118 observed domains	Community and social platform	1.35%	165		Confidence B	14
30	TechCrunchtechcrunch.com · #9 of 1130 classified editorial publications	Editorial publication	1.32%	162		Confidence B	9
31	Fortunebusinessinsights.comfortunebusinessinsights.com · #31 of 19,118 observed domains	Market and company database	1.31%	161		Confidence B	7
32	Github.comgithub.com · #32 of 19,118 observed domains	Community and social platform	1.19%	146		Confidence B	25
33	Hubspot.comhubspot.com · #33 of 19,118 observed domains	Vendor-owned source	1.16%	142		Confidence B	12
34	Nvidia.comnvidia.com · #34 of 19,118 observed domains	Vendor-owned source	1.15%	141		Confidence B	15
35	Experian.comexperian.com · #35 of 19,118 observed domains	Vendor-owned source	1.14%	140		Confidence C	6
36	Mordorintelligence.commordorintelligence.com · #36 of 19,118 observed domains	Market and company database	1.14%	140		Confidence B	9
37	Salesforce.comsalesforce.com · #37 of 19,118 observed domains	Vendor-owned source	1.11%	136		Confidence B	12
38	Harvard.eduharvard.edu · #38 of 19,118 observed domains	Academic and government source	1.10%	135		Confidence B	14
39	Databricks.comdatabricks.com · #39 of 19,118 observed domains	Vendor-owned source	1.08%	133		Confidence B	9
40	Bankrate.combankrate.com · #40 of 19,118 observed domains	Other observed source	1.08%	132		Confidence C	6
41	Axios.comaxios.com · #10 of 1130 classified editorial publications	Editorial publication	1.06%	130		Confidence B	16
42	Marketsandmarkets.commarketsandmarkets.com · #42 of 19,118 observed domains	Market and company database	1.03%	126		Confidence B	8
43	Cnbc.comcnbc.com · #11 of 1130 classified editorial publications	Editorial publication	1.02%	125		Confidence B	14
44	Sciencedirect.comsciencedirect.com · #44 of 19,118 observed domains	Academic and government source	1.01%	124		Confidence B	24
45	Fiercehealthcare.comfiercehealthcare.com · #12 of 1130 classified editorial publications	Editorial publication	0.96%	118		Confidence B	2
46	Failory.comfailory.com · #46 of 19,118 observed domains	Market and company database	0.95%	117		Confidence B	7
47	Guideflow.comguideflow.com · #47 of 19,118 observed domains	Vendor-owned source	0.95%	116		Confidence B	12
48	Shadow.incshadow.inc · #13 of 1130 classified editorial publications	Editorial publication	0.90%	110		Confidence B	5
49	Tracxn.comtracxn.com · #49 of 19,118 observed domains	Market and company database	0.89%	109		Confidence B	7
50	Instagram.cominstagram.com · #50 of 19,118 observed domains	Other observed source	0.88%	108		Confidence B	30

Showing 1-50 of 50

The Machine Relations Index measures how often AI answer engines cite each source domain when people ask real buying and research questions. It observes six engines — Perplexity, ChatGPT, Gemini, Claude, Google AI Mode, and Google AI Overviews — across a fixed basket of 24 measured subject categories plus a legacy news-topic bucket (25 taxonomy nodes in all). Findings are grouped into strata, where a stratum is one subject category paired with one question type. A stratum publishes a citation rate only after it clears the evidence floor of at least 10 observed runs across at least 7 distinct dates; below that line it is marked collecting rather than scored, so early or thin signal is never shown as settled. Every domain an engine cites is measured on equal terms — membership in any external catalog is recorded only as a label and is never used to decide what gets scored. The public Index reports rates and rankings; it excludes raw cited URLs, internal query identifiers, and provider payloads. Validated source segments currently cover 29.9% of the monitored benchmark.

Release mri_score_v2.0+2026-08-17+7afb3777f5e0.