Upstash vs LangSmith

Upstash

LangSmith

Upstash · 12 features

• Cron (via QStash) — Scheduled HTTP callbacks on any interval.
• Edge-Ready — Native for CF Workers, Vercel Edge, Deno, Bun.
• Global Database — Multi-region Redis reads.
• HTTP REST APIs — Every product has REST — works from edge runtimes.
• QStash — HTTP-based message queue + cron scheduler for webhooks.
• QStash Webhooks — Outgoing webhook delivery with retries + DLQ.
• Read Regions — Add read replicas in any region ($5/mo each).
• @upstash/ratelimit — Redis-backed rate limiter lib.
• Upstash Redis — Serverless Redis with HTTP REST + RESP TCP.
• Upstash Search — Full-text + semantic search engine.
• Upstash Vector — Serverless vector DB with REST API. HNSW indexing.
• Upstash Workflow — Durable workflow runtime built on QStash.

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.