Machine Relations Index (MRI)

Measurement window2026-05-10 to 2026-09-04

Published 2026-09-04 from the current dataset release covering 20,658 cited domains and 114,340 source events.

Sample threshold10/7

Rates publish after enough answer runs across distinct observation dates.

Segment coverage45.2%

71 validated segments, 80 still collecting observations.

Citation leaders

Top cited domains

Reddit#1 overall · Community and social platform100th percentile overall · 1,914 cited runs · 4 enginesYouTube#2 overall · Search or media platform100th percentile overall · 1,378 cited runs · 6 enginesLinkedIn#3 overall · Community and social platform100th percentile overall · 989 cited runs · 6 enginesMedium#1 of 1167 classified editorial publications · Editorial publication100th percentile overall · 793 cited runs · 6 enginesForbes#2 of 1167 classified editorial publications · Editorial publication100th percentile overall · 601 cited runs · 6 enginesNIH#6 overall · Academic and government source100th percentile overall · 441 cited runs · 6 enginesGartner.com#7 overall · Analyst and consulting research100th percentile overall · 440 cited runs · 6 enginesG2#8 overall · Market and company database100th percentile overall · 405 cited runs · 6 engines

Source universe

Cited source index

Initial view shows the top 50 domains from 20,658 total.

Data through 2026-09-04

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 20,658 observed domains	Community and social platform	13.41%	1,914		Confidence A	88
2	YouTubeyoutube.com · #2 of 20,658 observed domains	Search or media platform	9.66%	1,378		Confidence A	80
3	LinkedInlinkedin.com · #3 of 20,658 observed domains	Community and social platform	6.93%	989		Confidence A	64
4	Mediummedium.com · #1 of 1167 classified editorial publications	Editorial publication	5.56%	793		Confidence A	61
5	Forbesforbes.com · #2 of 1167 classified editorial publications	Editorial publication	4.21%	601		Confidence A	51
6	NIHnih.gov · #6 of 20,658 observed domains	Academic and government source	3.09%	441		Confidence A	38
7	Gartner.comgartner.com · #7 of 20,658 observed domains	Analyst and consulting research	3.08%	440		Confidence A	23
8	G2g2.com · #8 of 20,658 observed domains	Market and company database	2.84%	405		Confidence A	26
9	TechRadartechradar.com · #3 of 1167 classified editorial publications	Editorial publication	2.82%	403		Confidence A	45
10	Arxiv.orgarxiv.org · #10 of 20,658 observed domains	Academic and government source	2.79%	398		Confidence A	35
11	Ibm.comibm.com · #11 of 20,658 observed domains	Vendor-owned source	2.13%	304		Confidence A	25
12	Microsoft.commicrosoft.com · #12 of 20,658 observed domains	Vendor-owned source	2.12%	302		Confidence A	33
13	Yahooyahoo.com · #4 of 1167 classified editorial publications	Editorial publication	2.11%	301		Confidence A	30
14	Landbase.comlandbase.com · #14 of 20,658 observed domains	Vendor-owned source	2.10%	300		Confidence A	9
15	Healthline.comhealthline.com · #15 of 20,658 observed domains	Other observed source	2.08%	297		Confidence B	12
16	Crunchbase.comcrunchbase.com · #16 of 20,658 observed domains	Market and company database	1.90%	271		Confidence B	7
17	Substack.comsubstack.com · #17 of 20,658 observed domains	Community and social platform	1.72%	245		Confidence B	34
18	Nerdwallet.comnerdwallet.com · #5 of 1167 classified editorial publications	Editorial publication	1.69%	241		Confidence B	11
19	Amazon.comamazon.com · #6 of 1167 classified editorial publications	Editorial publication	1.65%	235		Confidence B	36
20	TechTargettechtarget.com · #7 of 1167 classified editorial publications	Editorial publication	1.55%	221		Confidence B	26
21	Paloaltonetworks.compaloaltonetworks.com · #21 of 20,658 observed domains	Vendor-owned source	1.51%	216		Confidence B	14
22	Dev.todev.to · #22 of 20,658 observed domains	Community and social platform	1.43%	204		Confidence B	27
23	Facebook.comfacebook.com · #23 of 20,658 observed domains	Community and social platform	1.42%	202		Confidence B	55
24	Sentinelone.comsentinelone.com · #24 of 20,658 observed domains	Vendor-owned source	1.40%	200		Confidence B	10
25	Deloitte.comdeloitte.com · #25 of 20,658 observed domains	Analyst and consulting research	1.35%	192		Confidence B	11
26	Grandviewresearch.comgrandviewresearch.com · #26 of 20,658 observed domains	Market and company database	1.32%	188		Confidence B	8
27	Wikipediawikipedia.org · #27 of 20,658 observed domains	Academic and government source	1.29%	184		Confidence B	33
28	PR Newswireprnewswire.com · #8 of 1167 classified editorial publications	Editorial publication	1.25%	179		Confidence B	26
29	Y Combinatorycombinator.com · #29 of 20,658 observed domains	Community and social platform	1.16%	165		Confidence B	14
30	TechCrunchtechcrunch.com · #9 of 1167 classified editorial publications	Editorial publication	1.14%	163		Confidence B	9
31	Fortunebusinessinsights.comfortunebusinessinsights.com · #31 of 20,658 observed domains	Market and company database	1.13%	161		Confidence B	7
32	Github.comgithub.com · #32 of 20,658 observed domains	Community and social platform	1.05%	150		Confidence B	26
33	Guideflow.comguideflow.com · #33 of 20,658 observed domains	Vendor-owned source	1.01%	144		Confidence B	18
34	Hubspot.comhubspot.com · #34 of 20,658 observed domains	Vendor-owned source	1.00%	142		Confidence B	12
35	Harvard.eduharvard.edu · #35 of 20,658 observed domains	Academic and government source	0.99%	141		Confidence B	18
36	Mordorintelligence.commordorintelligence.com · #36 of 20,658 observed domains	Market and company database	0.99%	141		Confidence B	10
37	Nvidia.comnvidia.com · #37 of 20,658 observed domains	Vendor-owned source	0.99%	141		Confidence B	15
38	Salesforce.comsalesforce.com · #38 of 20,658 observed domains	Vendor-owned source	0.99%	141		Confidence B	13
39	Experian.comexperian.com · #39 of 20,658 observed domains	Vendor-owned source	0.98%	140		Confidence C	6
40	Bankrate.combankrate.com · #40 of 20,658 observed domains	Other observed source	0.97%	139		Confidence B	7
41	Databricks.comdatabricks.com · #41 of 20,658 observed domains	Vendor-owned source	0.95%	135		Confidence B	11
42	Axios.comaxios.com · #10 of 1167 classified editorial publications	Editorial publication	0.91%	130		Confidence B	16
43	Sciencedirect.comsciencedirect.com · #43 of 20,658 observed domains	Academic and government source	0.90%	129		Confidence B	26
44	Marketsandmarkets.commarketsandmarkets.com · #44 of 20,658 observed domains	Market and company database	0.88%	126		Confidence B	8
45	Cnbc.comcnbc.com · #11 of 1167 classified editorial publications	Editorial publication	0.88%	125		Confidence B	14
46	Nytimes.comnytimes.com · #12 of 1167 classified editorial publications	Editorial publication	0.86%	122		Confidence B	18
47	Fiercehealthcare.comfiercehealthcare.com · #13 of 1167 classified editorial publications	Editorial publication	0.84%	120		Confidence B	4
48	Stripe.comstripe.com · #48 of 20,658 observed domains	Vendor-owned source	0.83%	119		Confidence B	8
49	Zapier.comzapier.com · #49 of 20,658 observed domains	Vendor-owned source	0.83%	119		Confidence B	19
50	Failory.comfailory.com · #50 of 20,658 observed domains	Market and company database	0.82%	117		Confidence B	7

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 45.2% of the monitored benchmark.

Release mri_score_v2.0+2026-09-04+8596989f7da8.