langchain_data_agent vs Weaver
langchain_data_agent ranks higher on current evidence: no commits in 90 days; last commit 292 days ago.
| langchain_data_agent | Weaver | |
|---|---|---|
| Grade | D | F |
| Verdict | Dormant1 major behind | Dormant2+ majors behind |
| Category rank | #61 | #84 |
| Model | Free | Free |
| Commits, 90 days | 0 | 0 |
| Contributors, 90 days | 0 | 0 |
| Last activity | Dec 30, 2025 | Apr 9, 2026 |
| Listed price | Free | Free |
| Evidence source | Code | Code |
| Latest release | v0.3.1 | v0.6.7 |
| License | MIT | MIT |
| FastAPI | 0.124.4 (latest 0.146.0) | 0.134.0 (latest 0.146.0) |
| pandas | 2.0.0 (latest 3.0.6) | — |
| LangChain | 1.2.0 ✓ | 1.0.0 ✓ |
| LangGraph | 1.0.5 ✓ | 1.0.0 ✓ |
| Pydantic | 2.12.5 ✓ | 2.12.5 ✓ |
| SQLAlchemy | 2.0.45 ✓ | 2.0.25 ✓ |
| Vercel AI SDK | — | 3.4.0 (latest 7.0.143) |
| Next.js | — | 14.2.0 (latest 16.4.2) |
| OpenAI SDK | — | 1.0.0 (latest 3.35.1) |
| TypeScript | — | 5.9.3 (latest 7.0.2) |
| React | — | 18.3.0 (latest 19.3.1) |
| Tailwind CSS | — | 3.4.1 (latest 4.3.3) |
| Framework | FastAPI | Next.js, FastAPI |
| Database / ORM | SQLAlchemy, PostgreSQL (psycopg) | SQLAlchemy, PostgreSQL (psycopg) |
| AI | LangChain, LangGraph | Vercel AI SDK, OpenAI SDK, LangChain, LangGraph, MCP SDK |
| API layer | Pydantic, Uvicorn | Pydantic, Uvicorn |
| UI | — | Tailwind CSS, Radix UI |
Evidence checked . ✓ = on the latest major version. "Claimed" = a version the vendor's public pages mention, not verified code. Evidence as of Oct 19, 2026. Rankings never depend on affiliate or paid status. Method.