LangChain vs RelAI
LangChain vs RelAI, compared side by side on 21 data points: what each one does, how big it is, what it has raised, the tech running each site, and what users report. We score both out of 100 on traction, team and visibility: LangChain is on 76/100 and RelAI on 51/100.
Where each one leads
LangChain
- our overall score: 76/100 against 51/100
- domain rating: 86/100 against 23/100
- headcount: 312 against 7
- headcount growth: +260.4% against -41.5%
- funding raised: $260M against $6.9M
- LinkedIn following: 514,641 against 1,271
RelAI
Leads on none of the measures we hold for both companies.
At a glance
| Measure | LangChain | RelAI |
|---|---|---|
| What it is | The platform for building reliable AI agents and LLM applications. | An open-source platform for building, simulating, evaluating, and optimizing reliable AI agents. |
| Category | Agentic AI, AI Agent, Foundation Model, Large Language Model | Agentic AI, AI Agent, Foundation Model, AI Tools |
| Sells toBusiness model | B2B | B2B |
| Offering | Platform | Platform |
| Founded | 2022 | 2023 |
| Headquarters | San Francisco, United States | San Francisco, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | LangChain | RelAI |
|---|---|---|
| Employees | 312 | 7 |
| Headcount growthLast 12 months | +260.4% | -41.5% |
| Total funding | $260M | $6.9M |
| Latest round | Not published | Funding Round |
| Valuation | $1K | Not published |
| LinkedIn followers | 514,641 | 1,271 |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | LangChain | RelAI |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 76/100 | 51/100 |
| Traction | 60/100 | 44/100 |
| Team | 70/100 | 30/100 |
| Community | 20/100 | Not published |
| Search visibility | 84/100 | 43/100 |
| Quality | 83/100 | 58/100 |
| Agent readinessHow well an AI agent can read and act on the site | D (42/100) | D (41/100) |
| Domain ratingLink authority, 0-100 | 86/100 | 23/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | LangChain | RelAI |
|---|---|---|
| CDN | Cloudflare | Cloudflare |
| CMS | Webflow | Not detected |
| Analytics | Google Tag Manager, Plausible | Not detected |
| Open source | Yes | Yes |
| Self-hostable | No | Yes |
LangChain vs RelAI: common questions
Which is better, LangChain or RelAI?
On our 0-100 score LangChain rates higher (76/100 against 51/100). The score weights traction, team, visibility and profile completeness, so it reflects company strength rather than which product suits you. We compare the two on 21 data points above: read the rows that match what you are buying for.
How do LangChain and RelAI compare on the numbers?
LangChain leads on our overall score (76/100 against 51/100), domain rating (86/100 against 23/100), headcount (312 against 7), headcount growth (+260.4% against -41.5%), funding raised ($260M against $6.9M), LinkedIn following (514,641 against 1,271).
Read the full LangChain review and pricing or the RelAI review and pricing. You can also browse other LangChain alternatives we track.