Sierra alternatives

Bret Taylor + Clay Bavor. Agent Data Platform links unstructured conversation data to enterprise systems (billing, inventory, policies, transactions); persists across channels and time. Memory accumulates across every interaction, not just within a session. Full Sierra record →

  1. 1 Decagon Vertical / domain-specific AI memory

    also in Vertical / domain-specific AI memory · same storage (graph) · same retrieval (graph-traversal) · same memory unit (episode) · also offered managed

    OSS ? Self-host — Managed ✓ MCP ? Compare with Sierra →

  2. 2 NVIDIA ReMEmbR Vertical / domain-specific AI memory

    also in Vertical / domain-specific AI memory · same storage (vector) · same retrieval (similarity) · same memory unit (episode)

    OSS — Self-host ✓ Managed — MCP ? ★ 359 Custom Compare with Sierra →

  3. 3 Harvey Memory Vertical / domain-specific AI memory

    also in Vertical / domain-specific AI memory · same storage (graph, vector) · same retrieval (graph-traversal, similarity) · same memory unit (episode) · also offered managed

    OSS ? Self-host ✓ Managed ✓ MCP ✓ Compare with Sierra →

  4. 4 Inworld AI Vertical / domain-specific AI memory

    also in Vertical / domain-specific AI memory · same storage (graph, vector) · same retrieval (graph-traversal, similarity) · same memory unit (episode) · also offered managed

    OSS ? Self-host ✓ Managed ✓ MCP ? Compare with Sierra →

  5. 5 Latitude / Voyage Vertical / domain-specific AI memory

    also in Vertical / domain-specific AI memory · same storage (graph, vector) · same retrieval (graph-traversal, similarity) · same memory unit (episode) · also offered managed

    OSS ? Self-host — Managed ✓ MCP ? Compare with Sierra →

  6. 6 Skild Brain Vertical / domain-specific AI memory

    also in Vertical / domain-specific AI memory · same storage (vector) · same retrieval (similarity) · same memory unit (episode) · also offered managed

    OSS ? Self-host — Managed ✓ MCP ? Compare with Sierra →

  7. 7 Nomi AI Vertical / domain-specific AI memory

    also in Vertical / domain-specific AI memory · same storage (graph) · same retrieval (graph-traversal) · same memory unit (episode) · also offered managed

    OSS ? Self-host — Managed ✓ MCP ? Compare with Sierra →

  8. 8 π0.5 (Physical Intelligence) Vertical / domain-specific AI memory

    also in Vertical / domain-specific AI memory · same storage (vector) · same retrieval (similarity) · same memory unit (episode) · also offered managed

    OSS ✓ Self-host ✓ Managed ✓ MCP ? ★ 13k Apache-2.0 (openpi repo; repo also ships a… Compare with Sierra →

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.