Bolt.new vs LangChain

Bolt.new

LangChain

Bolt.new · 14 features

• Browser Terminal — Real shell in-browser. Run npm install, scripts, etc.
• Deploy to Netlify — One-click deploy to Netlify.
• Deploy to Vercel — One-click deploy to Vercel.
• Design System Knowledge — Team plan: shared design-system context for consistent UI.
• Expo Support — Build React Native/Expo apps too.
• GitHub Export — Push full project to a new GitHub repo.
• Image Input — Upload image/sketch → Bolt generates matching UI.
• Import Existing Project — Upload an existing repo and iterate in Bolt.
• Live Edit + Run — Edit code + hot reload alongside AI agent.
• Private NPM Registries — Team plan: use private packages.
• Prompt to App — Describe app → Bolt scaffolds + codes + runs it in the browser.
• Stripe Integration — Hook up Stripe payments in-chat.
• Supabase Integration — Provision + connect Supabase from chat.
• WebContainer runtime — Node.js + terminal + filesystem running entirely in your browser.

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).