Character.ai alternatives

Chat Memories (user-defined facts), auto-memories for c.ai+ subscribers, pinned memories, in-context retention. Latest chat models PipSqueak 3 and ShortSqueak (Sep 2026). Full Character.ai record →

  1. 1 Luminance Institutional Memory Vertical / domain-specific AI memory

    also in Vertical / domain-specific AI memory · same storage (vector) · same retrieval (injection, similarity) · same conflict handling (overwrite) · same memory unit (fact, episode) · also offered managed

    OSS ? Self-host — Managed ✓ MCP ? Compare with Character.ai →

  2. 2 Skild Brain Vertical / domain-specific AI memory

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

    OSS ? Self-host — Managed ✓ MCP ? Compare with Character.ai →

  3. 3 OpenAI Agents SDK Memory Framework-embedded memory

    same storage (kv, vector) · same retrieval (injection, similarity) · same conflict handling (overwrite) · same memory unit (fact, episode) · also offered managed

    OSS ✓ Self-host ✓ Managed ✓ MCP ✓ ★ 29k released 2026-10-15 MIT Compare with Character.ai →

  4. 4 Google ADK Memory Framework-embedded memory

    same storage (kv, vector) · same retrieval (injection, similarity) · same conflict handling (overwrite) · same memory unit (fact, episode) · also offered managed

    OSS ✓ Self-host ✓ Managed ✓ MCP ✓ ★ 21k released 2026-08-07 Apache-2.0 Compare with Character.ai →

  5. 5 ASAPP GenerativeAgent Vertical / domain-specific AI memory

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

    OSS ? Self-host — Managed ✓ MCP ? Compare with Character.ai →

  6. 6 Convai (Mimir) Vertical / domain-specific AI memory

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

    OSS ? Self-host ✓ Managed ✓ MCP ? Compare with Character.ai →

  7. 7 ELSA Speak Vertical / domain-specific AI memory

    also in Vertical / domain-specific AI memory · same storage (vector) · same retrieval (injection, similarity) · same conflict handling (overwrite) · same memory unit (fact) · also offered managed

    OSS ? Self-host — Managed ✓ MCP ? Compare with Character.ai →

  8. 8 Hippocratic AI Polaris Vertical / domain-specific AI memory

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

    OSS ? Self-host — Managed ✓ MCP ? Compare with Character.ai →

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.