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Trending this week
The companies generating the most momentum right now — climbing the Built 100 fastest. Refreshed weekly.
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Company
This week
1
Anthropic#1 in AI
Builds Claude frontier models and AI assistant
AI·Late-stage·Cambridge, Massachusetts
▲ 1Peak #1 · 2 wks
2
OpenAIEditors' Choice
Builds ChatGPT and GPT frontier foundation models
AI·Late-stage·San Francisco, California
▼ 1Peak #1 · 25 wks
3
Databricks#1 in Dev Tools
Data lakehouse and AI/ML analytics platform
Dev Tools·Late-stage·San Francisco, California
▲ 2Peak #3 · 3 wks
4
–Peak #2 · 8 wks
5
Stripe#1 in Fintech
Payments infrastructure and APIs for businesses
Fintech·Late-stage·South San Francisco, California
▼ 2Peak #1 · 21 wks
6
▲ 4Peak #4 · 21 wks
7
Cyera#1 in Cybersecurity
AI-driven data security posture management
Cybersecurity·Late-stage·New York, New York
▲ 30Peak #7 · 11 wks
8
Commure#1 in Healthtech
AI revenue-cycle and clinical ops platform
Healthtech·Late-stage·Mountain View, California
▲ 28Peak #8 · 2 wks
9
Crusoe#1 in Climate & Energy
Energy-first AI data-center infrastructure
Climate & Energy·Late-stage·Denver, Colorado
▲ 8Peak #9 · 4 wks
10
▲ 22Peak #10 · 14 wks
11
Spreadsheet-style cloud BI on the warehouse
Dev Tools·Late-stage·San Francisco, California
▲ 96Peak #11 · 15 wks
12
Quince#1 in Consumer
Direct-from-factory affordable premium goods
Consumer·Late-stage·San Francisco, California
▲ 74Peak #12 · 10 wks
13
▲ 6Peak #13 · 11 wks
14
▲ 56Peak #14 · 12 wks
15
Deel#1 in SaaS / B2B
Global payroll and contractor compliance platform
SaaS / B2B·Late-stage·San Francisco, California
▲ 7Peak #15 · 13 wks
16
CognitionEditors' Choice
Devin, the autonomous AI software engineer
AI·Series D·San Francisco, California
▼ 8Peak #6 · 17 wks
17
▼ 8Peak #9 · 22 wks
18
AI model inference and deployment infrastructure
Dev Tools·Late-stage·San Francisco, California
▲ 26Peak #18 · 24 wks
19
Frontier models for multi-step agentic reasoning
AI·Series B·San Francisco, California
▲ 61Peak #19 · 1 wk
20
▲ 1Peak #14 · 19 wks
21
▲ 4Peak #21 · 1 wk
22
Ambient AI clinical documentation for clinicians
Healthtech·Series E·San Francisco, California
▲ 13Peak #22 · 1 wk
23
▲ 16Peak #23 · 11 wks
24
▼ 8Peak #16 · 16 wks
25
▲ 15Peak #25 · 20 wks
26
AI-powered CI/CD and software-delivery platform
Dev Tools·Late-stage·San Francisco, California
▼ 2Peak #24 · 24 wks
27
–Peak #27 · 1 wk
28
Marketplace for fractional luxury-home co-ownership
Consumer·Late-stage·San Francisco, California
▲ 73Peak #28 · 1 wk
29
Tech-driven global freight and logistics platform
Consumer·Late-stage·San Francisco, California
▲ 9Peak #29 · 8 wks
30
▲ 64Peak #30 · 9 wks
31
Cursor (Anysphere)Editors' Choice
AI-native code editor with agent mode
Dev Tools·Series D·San Francisco, California
▼ 24Peak #7 · 15 wks
32
Enhanced geothermal developer for firm clean power
Climate & Energy·Series E·Houston, Texas
▲ 51Peak #32 · 17 wks
33
▲ 35Peak #33 · 20 wks
34
Building compact tokamak fusion power plants
Climate & Energy·Late-stage·Devens, Massachusetts
▼ 4Peak #30 · 10 wks
35
Unified HR, IT, and finance employee platform
SaaS / B2B·Late-stage·San Francisco, California
▼ 15Peak #20 · 15 wks
36
▼ 5Peak #21 · 18 wks
37
Cloud BI blending governance and self-serve analytics
Dev Tools·Series B·San Francisco, California
▲ 35Peak #37 · 4 wks
38
▼ 27Peak #11 · 9 wks
39
▲ 37Peak #39 · 15 wks
40
▲ 5Peak #40 · 4 wks
41
▲ 47Peak #41 · 5 wks
42
Data-activation and agentic marketing platform
SaaS / B2B·Series C·San Francisco, California
▲ 57Peak #42 · 12 wks
43
▼ 15Peak #24 · 13 wks
44
▲ 48Peak #44 · 19 wks
45
Thermal batteries storing energy for industrial heat
Climate & Energy·Series B·San Jose, California
▲ 42Peak #45 · 22 wks
46
Live-shopping marketplace for collectibles and resale
Consumer·Late-stage·Marina del Rey, California
▼ 17Peak #15 · 13 wks
47
▼ 41Peak #6 · 16 wks
48
▼ 35Peak #13 · 17 wks
49
Consumer privacy app generating disposable identities
Cybersecurity·Series B·New York, New York
▲ 4Peak #49 · 9 wks
50
▲ 48Peak #50 · 11 wks
51
▲ 45Peak #51 · 12 wks
52
▼ 3Peak #48 · 10 wks
53
▼ 27Peak #26 · 11 wks
54
Enterprise compliance and process-automation software
SaaS / B2B·Series C·Mannheim, Baden-Wuerttemberg
▼ 3Peak #51 · 18 wks
55
▲ 12Peak #55 · 24 wks
56
Direct air capture using limestone mineralization
Climate & Energy·Series B·San Francisco, California
▲ 35Peak #56 · 1 wk
57
▼ 14Peak #40 · 4 wks
58
Modular nuclear microreactors for data centers
Climate & Energy·Series B·Dickinson, Texas
▼ 6Peak #52 · 5 wks
59
▼ 47Peak #12 · 15 wks
60
▲ 19Peak #60 · 16 wks
61
▲ 49Peak #61 · 23 wks
62
Safety-focused generative AI healthcare phone agents
Healthtech·Series C·Palo Alto, California
▲ 38Peak #62 · 24 wks
63
▲ 57Peak #63 · 14 wks
64
▼ 16Peak #48 · 1 wk
65
▼ 19Peak #27 · 2 wks
66
▼ 3Peak #52 · 3 wks
67
ClayEditors' Choice
GTM data enrichment and sales automation platform
SaaS / B2B·Series B·New York, New York
▼ 44Peak #23 · 10 wks
68
▲ 55Peak #68 · 14 wks
70
Identity verification and fraud-prevention platform
Cybersecurity·Series D·San Francisco, California
▲ 3Peak #70 · 6 wks
71
100-hour iron-air long-duration grid batteries
Climate & Energy·Late-stage·Somerville, Massachusetts
▲ 18Peak #71 · 3 wks
72
Ambient AI documentation and medical coding
Healthtech·Series C·San Francisco, California
▲ 31Peak #72 · 13 wks
73
▲ 52Peak #73 · 23 wks
74
▲ 35Peak #74 · 24 wks
75
▼ 34Peak #26 · 4 wks
76
▼ 29Peak #47 · 19 wks
77
▲ 8Peak #59 · 19 wks
78
▲ 55Peak #78 · 19 wks
79
▼ 15Peak #54 · 22 wks
80
Wholesale marketplace connecting retailers with brands
Consumer·Late-stage·San Francisco, California
▼ 62Peak #8 · 9 wks
81
▼ 4Peak #55 · 9 wks
82
▼ 4Peak #78 · 10 wks
83
▼ 14Peak #64 · 13 wks
84
▲ 20Peak #84 · 23 wks
85
Automated sales-tax compliance for online businesses
Fintech·Series A·San Francisco, California
▲ 41Peak #85 · 19 wks
86
▼ 21Peak #65 · 22 wks
87
▼ 45Peak #41 · 24 wks
88
▲ 36Peak #88 · 25 wks
89
▼ 56Peak #33 · 1 wk
90
Data pipeline platform for observability and security
SaaS / B2B·Late-stage·San Francisco, California
▼ 76Peak #14 · 7 wks
91
Static code analysis and application security
Cybersecurity·Series D·San Francisco, California
▼ 30Peak #61 · 12 wks
92
Low-carbon cement via electrochemical production
Climate & Energy·Series B·Somerville, Massachusetts
▼ 35Peak #57 · 1 wk
93
▼ 31Peak #50 · 15 wks
94
▲ 33Peak #94 · 19 wks
96
▼ 40Peak #56 · 16 wks
97
▼ 26Peak #71 · 6 wks
98
▲ 10Peak #80 · 22 wks
99
▲ 35Peak #99 · 10 wks
100
Neobank and remittances for immigrant families
Fintech·Series B·Washington, District of Columbia
▼ 26Peak #72 · 23 wks