The AX Index
How agent-ready is the web?
30 leading sites, scored against the AX Criteria. Updated April 14, 2026.
RankCompanyCategoryScore ↓Top IssueTested
#CompanyScore ↓
1
BrexVenture-Backed
74
Semantic HTML: Found 0/6 semantic elements: none24d ago1Brex
74
2
LinearVenture-Backed
67
Semantic HTML: Found 0/6 semantic elements: none24d ago2Linear
67
3
CursorAI-Native
60
Semantic HTML: Found 0/6 semantic elements: none24d ago3Cursor
60
4
NotionSaaS
56
Semantic HTML: Found 0/6 semantic elements: none24d ago4Notion
56
5
VercelSaaS
54
Content depth: Content ratio: 0.00 (main: 0 chars, total: 1…24d ago5Vercel
54
6
WebflowSaaS
54
Semantic HTML: Found 0/6 semantic elements: none24d ago6Webflow
54
7
StripeSaaS
50
Sitemap.xml: sitemap.xml not found (status 404)24d ago7Stripe
50
8
MistralAI-Native
50
Content depth: Content ratio: 0.00 (main: 0 chars, total: 1…24d ago8Mistral
50
9
Sequoia CapitalVenture Capital
50
llms.txt exists: llms.txt not found (status 404)24d ago9Sequoia Capital
50
10
RetoolVenture-Backed
49
llms.txt exists: llms.txt not found (status 404)24d ago10Retool
49
11
AwayDTC
48
Content depth: Content ratio: 0.00 (main: 0 chars, total: 1…24d ago11Away
48
12
Y CombinatorVenture Capital
46
llms.txt exists: llms.txt not found (status 404)24d ago12Y Combinator
46
13
VantaVenture-Backed
45
llms.txt exists: llms.txt not found (status 404)24d ago13Vanta
45
14
Best BuyEnterprise
44
llms.txt exists: llms.txt not found (status 404)24d ago14Best Buy
44
15
RampVenture-Backed
44
Sitemap.xml: sitemap.xml not found (status 404)24d ago15Ramp
44
16
TargetEnterprise
43
Sitemap.xml: sitemap.xml not found (status 404)24d ago16Target
43
17
AllbirdsDTC
42
llms.txt exists: llms.txt not found (status 404)24d ago17Allbirds
42
18
Founders FundVenture Capital
42
llms.txt exists: llms.txt not found (status 404)24d ago18Founders Fund
42
19
GlossierDTC
41
llms.txt exists: llms.txt not found (status 404)24d ago19Glossier
41
20
BombasDTC
41
llms.txt exists: llms.txt not found (status 404)24d ago20Bombas
41
21
Warby ParkerDTC
40
llms.txt exists: llms.txt not found (status 404)24d ago21Warby Parker
40
22
FigmaSaaS
40
llms.txt exists: llms.txt not found (status 404)24d ago22Figma
40
23
AnthropicAI-Native
40
Content depth: Content ratio: 0.00 (main: 0 chars, total: 16…24d ago23Anthropic
40
24
PerplexityAI-Native
37
llms.txt exists: Request to llms.txt was blocked24d ago24Perplexity
37
25
a16zVenture Capital
36
llms.txt exists: llms.txt not found (status 404)24d ago25a16z
36
26
AppleEnterprise
34
Content depth: Content ratio: 0.00 (main: 0 chars, total: 1…24d ago26Apple
34
27
OpenAIAI-Native
34
llms.txt exists: llms.txt not found (status 404)24d ago27OpenAI
34
28
AmazonEnterprise
Amazon33
llms.txt exists: llms.txt not found (status 404)24d ago28Amazon
Amazon33
29
WalmartEnterprise
33
llms.txt exists: llms.txt not found (status 404)24d ago29Walmart
33
30
BenchmarkVenture Capital
29
llms.txt exists: llms.txt not found (status 404)24d ago30Benchmark
29