LangSmith alternatives
Memory reads, vector DB retrievals, state changes are distinct span types in traces. RAG eval separates retrieval quality (context precision) from generation quality (faithfulness). Dataset versioning guards against eval drift. Full LangSmith record →
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also in Memory observability & monitoring · same storage (relational) · same retrieval (exact-match) · same memory unit (episode) · also offered managed · also has MCP
OSS ✓ Self-host ✓ Managed ✓ MCP ✓ ★ 5.8k released 2025-08-29 MIT (SDK) Compare with LangSmith →
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also in Memory observability & monitoring · same storage (relational) · same retrieval (exact-match) · same memory unit (episode) · also offered managed · also has MCP
OSS ✓ Self-host ✓ Managed ✓ MCP ✓ ★ 36k MIT (core; ee/ directories under separate… Compare with LangSmith →
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same storage (relational) · same retrieval (exact-match) · same memory unit (episode) · also offered managed · also has MCP
OSS — Self-host ✓ Managed ✓ MCP ✓ ★ 208k released 2026-10-19 Sustainable Use License + n8n Enterprise… Compare with LangSmith →
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same storage (relational) · same retrieval (exact-match) · same memory unit (episode) · also offered managed · also has MCP
OSS ✓ Self-host ✓ Managed ✓ MCP ✓ ★ 43k released 2026-10-16 MIT Compare with LangSmith →
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same storage (relational) · same retrieval (exact-match) · same memory unit (episode) · also has MCP
OSS — Self-host ? Managed ? MCP ✓ ★ 32k released 2026-10-22 Elastic License 2.0 Compare with LangSmith →
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same storage (relational) · same retrieval (exact-match) · same memory unit (episode)
OSS — Self-host ? Managed ? MCP ? ★ 22k released 2026-10-22 source-available (Screenpipe Commercial License) Compare with LangSmith →
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same storage (relational) · same memory unit (episode) · also offered managed · also has MCP
OSS ✓ Self-host ✓ Managed ✓ MCP ✓ ★ 43k released 2026-10-21 Apache-2.0 Compare with LangSmith →
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same storage (relational) · same memory unit (episode) · also offered managed · also has MCP
OSS ✓ Self-host ✓ Managed ✓ MCP ✓ ★ 27k released 2026-10-21 Apache-2.0 (core; ee/ dirs under… Compare with LangSmith →
Ranked by shared memory design (storage, retrieval, conflict handling, memory unit), same section and shared must-haves (open source, self-hosting, MCP), with adoption as a tie-breaker. ✓ confirmed · — no · ? not in the catalog yet. Want picks for your own requirements? Use the chooser. Checking a whole project? Check your stack.