LangChain vs Lovable
The framework for building LLM apps — chains, agents, RAG, LangGraph
vs. AI app builder with shared team workspace — unlimited users per plan
Pricing tiers
LangChain
OSS (MIT)
MIT-licensed core library. Free forever. Python + JS.
$0 base (usage-based)
LangSmith (see entry)
Observability layer — Developer free, Plus $39/seat. Separate platform.
$0 base (usage-based)
LangGraph Platform — Developer
Deploy LangGraph agents as an API. Free tier — limited execution minutes.
$0 base (usage-based)
LangGraph Platform — Plus
$39/seat/mo (tied to LangSmith Plus). More execution credit. Production features.
$39/mo
Enterprise
Custom. Self-host, dedicated support, SSO.
Custom
Lovable
Free
Limited features baseline. Try out and build small demos.
Free
Pro
$25/month (shared across unlimited users). 100 credits/mo + 5 daily (up to 150/mo). Custom domains, remove Lovable badge, user roles.
$25/mo
Business
$50/month (shared). Everything in Pro + Internal publish, SSO, Team workspace, personal projects, design templates, security center.
$50/mo
Enterprise
Custom (platform fee by company size). Covers all employees. Volume credits, dedicated support, onboarding, SCIM, audit logs.
Custom
Free-tier quotas head-to-head
Comparing oss on LangChain vs free on Lovable.
| Metric | LangChain | Lovable |
|---|---|---|
| No overlapping quota metrics for these tiers. | ||
Features
LangChain · 18 features
- Agents — Tool-using agents with reasoning loops.
- Chains (LCEL) — LangChain Expression Language — pipe primitives into chains.
- Checkpointers (LangGraph) — Persist agent state to SQL, Mongo, Redis, Postgres.
- Document Loaders — 150+ loaders for PDF, HTML, Notion, Google Drive, S3, GitHub, etc.
- Human-in-the-loop — Pause agent for approval, then resume.
- LangGraph — Stateful graph-based agent runtime. Durable, replayable, human-in-the-loop.
- LangGraph Platform — Managed hosting for LangGraph agents with state persistence.
- LangGraph Studio — Desktop IDE for debugging agent graphs.
- LangServe — Deploy chains as FastAPI endpoints.
- Memory — Buffer, summary, entity, vector memory stores.
- Output Parsers — Structured JSON, Pydantic schemas, function calling.
- Prompt Templates — Templating + partial filling + output parsers.
- RAG (Retrieval-Augmented Generation) — Standard patterns + 50+ retrievers.
- Streaming — First-class streaming at every layer.
- Subgraphs — Compose agent graphs hierarchically.
- Text Splitters — Recursive, token, semantic splitters for chunking.
- Tools — 400+ pre-built tools (web search, code, databases, APIs).
- Vector Store Integrations — 60+ vector DBs (Pinecone, Chroma, Weaviate, PGVector, Qdrant, Milvus).
Lovable · 16 features
- Connect External APIs — Chat: "connect OpenAI API" → done.
- Custom Domains — Publish at yourbrand.com.
- Design Templates — Pre-made design systems (Business tier).
- GitHub 2-way Sync — Commit from Lovable or edit in repo — reflects both ways.
- Image/Sketch to UI — Upload screenshot → get matching UI.
- Internal Publish — Deploy internally only (Business tier).
- Live Preview — See the app live while iterating.
- Prompt-to-App — Natural language → running React app.
- Remove Lovable Badge — White-label output — no Lovable branding.
- SCIM Provisioning (Ent) — Directory sync.
- Security Center — Audit + permissions console (Business+).
- Stripe Integration — Built-in Stripe payments setup.
- Supabase Native — First-class Supabase auth + DB integration.
- Team Workspace — Shared projects + roles.
- User Roles — Role-based access control.
- Visual Edit — Click element → describe change.
Developer interfaces
| Kind | LangChain | Lovable |
|---|---|---|
| SDK | @langchain/core (Node), langchain (Python), langgraph (JS), langgraph (Python), LangServe | — |
| REST | LangGraph Platform | Lovable API (preview) |
| OTHER | — | GitHub 2-way sync, Lovable Web App, Supabase Native |
Staxly is an independent catalog of developer platforms. Outbound links to LangChain and Lovable are plain references to their official websites. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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