LangChain VS Vercel AI SDK
As of 30 October 2026, Vercel AI SDK is named by 106 companies and LangChain by 2,659; LangChain skews to companies under 200 people (45% vs 53%), Vercel AI SDK to companies over 1,000 (16% vs 31%).
As of 30 October 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.
The website-and-DNS footprint is not comparable between a marketing suite and a CRM: LangChain's script and mail records show on hundreds of thousands of small sites, Vercel AI SDK rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.
- LangChain: 2–200 employees
- 45%
- Vercel AI SDK: 2–200 employees
- 53%
- LangChain: 1,000+ employees
- 31%
- Vercel AI SDK: 1,000+ employees
- 16%
- Postings per company, 90 days
- 3.3 · 1.7
- Website or DNS footprint
- 0 · 0
Who chooses which
Share of each tool's companies in every segment. "Leans" marks a gap of more than two points.
| Segment | LangChain | share | Vercel AI SDK | share | Leans |
|---|---|---|---|---|---|
| Self-employed | 59 | 2% | 12 | 11% | Vercel AI SDK |
| 2-10 employees | 268 | 10% | 19 | 18% | Vercel AI SDK |
| 11-50 employees | 425 | 16% | 21 | 20% | Vercel AI SDK |
| 51-200 employees | 509 | 19% | 16 | 15% | LangChain |
| 201-500 employees | 339 | 13% | 14 | 13% | even |
| 501-1000 employees | 244 | 9% | 7 | 7% | LangChain |
| 1001-5000 employees | 392 | 15% | 13 | 12% | LangChain |
| 5001-10000 employees | 118 | 4% | 2 | 2% | LangChain |
| 10,001+ employees | 305 | 11% | 2 | 2% | LangChain |
| Segment | LangChain | share | Vercel AI SDK | share | Leans |
|---|---|---|---|---|---|
| Technology & software | 1,502 | 56% | 75 | 71% | Vercel AI SDK |
| Business & finance services | 568 | 21% | 14 | 13% | LangChain |
| Manufacturing & industry | 184 | 7% | 4 | 4% | LangChain |
| Media & content | 82 | 3% | 2 | 2% | even |
| Public, community & associations | 54 | 2% | 2 | 2% | even |
| Utilities & infrastructure | 52 | 2% | – | – | outside top 12 |
| Consumer services & leisure | 49 | 2% | 2 | 2% | even |
| Commerce & trade | 48 | 2% | 2 | 2% | even |
| Health care | 33 | 1% | 2 | 2% | even |
| Transport, logistics & rental | 28 | 1% | 1 | 1% | even |
| Property & construction | 25 | 1% | 2 | 2% | even |
| Automotive | 17 | 1% | – | – | outside top 12 |
| Segment | LangChain | share | Vercel AI SDK | share | Leans |
|---|---|---|---|---|---|
| United States | 1,585 | 60% | 63 | 59% | even |
| United Kingdom | 181 | 7% | 8 | 8% | even |
| Germany | 156 | 6% | 6 | 6% | even |
| India | 122 | 5% | 2 | 2% | LangChain |
| France | 76 | 3% | 2 | 2% | even |
| Canada | 67 | 3% | 4 | 4% | even |
| Singapore | 34 | 1% | – | – | outside top 12 |
| Netherlands | 33 | 1% | 2 | 2% | even |
| Brazil | 30 | 1% | – | – | outside top 12 |
| Spain | 29 | 1% | 2 | 2% | even |
| Australia | 27 | 1% | – | – | outside top 12 |
| Italy | 22 | 1% | 2 | 2% | even |
| Austria | – | – | 2 | 2% | outside top 12 |
| Belgium | – | – | 2 | 2% | outside top 12 |
| Argentina | – | – | 1 | 1% | outside top 12 |
| Segment | LangChain | share | Vercel AI SDK | share | Leans |
|---|---|---|---|---|---|
| Data & AI | 6,563 | 57% | 82 | 32% | LangChain |
| Software engineering | 2,609 | 23% | 113 | 43% | Vercel AI SDK |
| IT operations & business systems | 367 | 3% | 4 | 2% | even |
| Product, program & project management | 191 | 2% | 11 | 4% | Vercel AI SDK |
| Sales | 171 | 1% | 6 | 2% | even |
| General management & consulting | 111 | 1% | – | – | outside top 12 |
| Engineering (non-software) | 109 | 1% | 7 | 3% | even |
| Legal, compliance & risk | 25 | 0% | – | – | outside top 12 |
| Education & training | 24 | 0% | – | – | outside top 12 |
| Marketing & communications | 23 | 0% | 3 | 1% | even |
| Customer service & success | 14 | 0% | 8 | 3% | Vercel AI SDK |
| Finance & accounting | 13 | 0% | 1 | 0% | even |
| Business development & strategy | – | – | 2 | 1% | outside top 12 |
| Unclassified | – | – | 2 | 1% | outside top 12 |
| Design & UX | – | – | 1 | 0% | outside top 12 |
The companies behind each column
Companies using LangChain →
Companies using Vercel AI SDK →
llm app frameworks ranked →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
Vercel AI SDK is named by 106 companies in job postings and LangChain by 2,659; 0 name both. (Breaknorm, 30 October 2026, https://breaknorm.co/compare/langchain-vs-vercel-ai-sdk)
Read from the source, not self-reported
Every number on this page can be traced to a page we crawled or a posting we read. Full methodology →
- Job postingsRead hourly from career sites. A tool counts when the employer's own text names it as the team's system; both tools can count for one company.
- Website and DNSScripts and embeds on the company's pages, plus SPF, DKIM, MX and CNAME records of its domain that point at the vendor.
- SegmentsCountry, size and industry from the company profile built from its website.
- Not a reviewNo ratings, prices or feature claims. For those, read the vendors.
LangChain vs Vercel AI SDK: questions
Which is more used, LangChain or Vercel AI SDK?
By companies naming it in their own job postings, LangChain (2,659) over Vercel AI SDK (106). By website-and-DNS footprint, Vercel AI SDK (0 vs 0), because its scripts and mail records sit on many small company sites.
Who chooses LangChain?
45% of LangChain companies have 2 to 200 employees, against 53% for Vercel AI SDK. 31% of LangChain companies have over 1,000 employees, against 16% for Vercel AI SDK.
Do companies run both?
0 companies name both in their postings, usually LangChain in marketing and Vercel AI SDK in sales, or during a migration.
Where do these numbers come from?
From the employer's own text in job postings read hourly from career sites, and from scripts found on company websites in our crawl. No vendor data, no surveys.
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