Neon vs LangSmith

Neon

LangSmith

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…

LangSmith · 14 features

• Alerts — Threshold alerts on latency, cost, eval metrics.
• Annotation Queues — Human-review workflows for trace quality rating.
• Custom Dashboards — Aggregate metrics dashboards per project/tag.
• Datasets — Collect examples → use as eval sets or training data.
• Evaluations — LLM-as-judge, embedding similarity, custom Python evaluators, offline batch eval…
• LangChain Integration — Auto-trace any LangChain/LangGraph run with env var.
• LangGraph Integration — First-class trace + eval for LangGraph agents.
• LLM Tracing — Automatic trace every LLM call + tool call + chain step.
• OpenTelemetry Export — Export traces as OTLP to Datadog/Honeycomb/etc.
• Playground — Test prompts + models inline before deploying.
• Prompt Canvas — Visual prompt editor with live test + eval.
• Prompt Hub — Public + private prompt library with versioning.
• Self-Hosted (Enterprise) — Docker + k8s deployment in your infra.
• Threads + Sessions — Group traces into conversational sessions.