Buildkite vs LangSmith

Buildkite

LangSmith

Buildkite · 17 features

• Agent Queues — Route jobs to specific agents by tag.
• Annotations — Rich Markdown in build UI.
• Artifacts — Upload + download build artifacts.
• Audit Log — Enterprise audit.
• Automatic Cancel — Cancel stale builds on new push.
• Automatic + Manual Retries — Configurable retry semantics.
• Buildkite Hosted Agents — Managed agents (opt-in).
• Dynamic Pipelines — Generate YAML in a command step.
• input Step — Block for user input.
• Parallelism — Parallel step scaling with BUILDKITE_PARALLEL_JOB.
• Pipelines — YAML + optional dynamic upload.
• Plugins — Agent-level lifecycle hooks.
• Secrets (Vault) — Integrate with HashiCorp Vault, SSM.
• Teams + RBAC — Enterprise permissions.
• Test Engine — Flaky test + timing insights.
• trigger Step — Fire another pipeline.
• wait Step — Sync point in pipeline.

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.