LangChain vs Neon

LangChain

Neon

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).

Neon · 14 features

• Autoscaling — Compute scales CPU + memory between min and max CU in seconds based on load.
• Branching — Git-like DB branches: copy-on-write snapshots of data + schema. Instant, cheap. …
• Data API (REST) — PostgREST-compatible REST endpoint auto-generated from your schema. Uses Postgre…
• IP Allowlist — Restrict DB access to specific CIDRs. Launch+.
• Launchpad — One-click create-a-database link that can be embedded in OSS repos (DATABASE_URL…
• Logical Replication — Publish changes to Snowflake, BigQuery, Kafka, or other Postgres. Subscribe from…
• Monitoring — Built-in dashboards for CPU/RAM/connections/slow queries. Prometheus export on B…
• Neon Auth — Stack Auth integrated: users table auto-synced into your Postgres (public.users_…
• Point-in-Time Restore — Restore DB to any moment in the retention window (6h free → 30d Scale) via branc…
• Private Networking — AWS PrivateLink / VPC peering. Business plan.
• Read Replicas — Create a read-only compute endpoint on the same branch. Zero replication lag (re…
• Scale to Zero — Compute suspends when idle — no charge for compute while paused. Cold-start ~300…
• Schema Diff — Compare schema between branches — build PR checks and preview migrations safely.
• SQL over HTTP — Serverless driver lets you query Postgres over HTTPS — works in edge runtimes (V…