Threadline vs the alternatives

Auth0 solved identity. Threadline solves context.

Feature	Threadline	Mem0	Supermemory	Zep	Letta
Persistent memory	Yes	Yes	Yes	Yes	Yes
Works with any LLM	Yes	Yes	Yes	Yes	Yes
MCP compatible	Yes	Yes	No	No	No
User‑owned context	Yes	No	No	No	No
OAuth‑style grant system	Yes	No	No	No	No
Scoped agent access	Yes	No	No	No	No
Idempotent grants / scope expansion	Yes	No	No	No	No
Full audit trail	Yes	No	No	Yes	No
Hard delete by user	Yes	No	No	No	No
Model calls on read	None	Yes (semantic search)	Yes (semantic search)	Yes (semantic search)	Yes (semantic search)
Free tier	10K mem/mo	1K/mo	Limited	None	None

Comparison as of August 2026, based on publicly available documentation. We re-verify before every release; corrections welcome at support@threadline.to.

Threadline's inject() is a direct database lookup, not vector search. Intelligence happens at update() time, not retrieval time, so reads make no model calls. Competitors perform full semantic search at retrieval time.