Hosted agent memory layer
Bolt persistent memory (add/retrieve) onto any agent without building a vector stack.
At a glance — Oct 2026
Updated 2026-10-27 · forward this page: /jtbds/hosted-agent-memory#briefScores as of 2026-09-14 (43 days old; Depot marks scores stale after 30 days). The pick is still Depot's current editorial pick; it has not been re-reviewed since. Prices below carry their own dates.
- Depot Pick
- Mem0 · 7.63/10 for this job (curated estimate, high confidence)
DX + pricePerf for bolt-on memory; watch retrieval metering.
- Runner-up
- Zep · 7.48/10
Scores higher than the pick on: Capability fit, Latency / reliability, Privacy / data retention.
- When not to use the pick
- Need temporal knowledge graphs — Zep; stateful agent runtime — Letta; already have pgvector.
- Lock-in / migration
- The pick has lower stored lock-in risk than runner-up Zep (5 vs 5.2). Pick exit signals: open source (provider tag `oss`).
- Sourced price (no comparable unit)
Pick: no sourced price in this job's unit (no_sourced_price).
No cheapest SKU (no_comparable_unit_for_job). No price was invented.
- Free option
- No free resource lists this job. A cheap paid SKU is not a free option.
- Failure modes to watch
- Context overflow: If the input exceeds the window, say so and retrieve a narrower slice. Do not answer from a truncated head as if it were the whole source.
- Stale retrieval: Store the source URL and the time it was fetched. If a newer canonical page exists, or two stored sources disagree, do not answer from the older one.
Cite: Agent Provider Depot, Depot Pick for hosted-agent-memory: mem0, scores as of 2026-09-14. Agents: GET /api/decide?jtbd=hosted-agent-memory
Mem0
DX + pricePerf for bolt-on memory; watch retrieval metering.
Pricing (directional): As of 2026-10-24 (mem0.ai/pricing, fetched 2026-10-24): Hosted memory layer. Hobby 'Free' ('10,000 add requests/ month', '1,000 retrieval requests/ month', '1 project'); Starter '$19 / month' ('50,000 add requests /month', '5,000 retrieval …
Lock-in risk: higher = more lock-in (worse). Overall already inverts this dimension.
Default hosted agent memory bolt-on. Model retrieval volume carefully; self-host OSS if caps hurt.
Quote for Hosted agent memory layer
Depot Pick stays Mem0. Prices below are sourced SKU rows only (as of 2026-10-27). Input and output are not blended. GET /api/quote?jtbd=hosted-agent-memory
Nothing was compared. no comparable sourced unit for this job; chat input $/1M and other units were not borrowed pickIsPriceWinner is null.
Sourced price unavailable for the Depot Pick. No row in the pricing index.
7 of 7 candidates have no sourced price row. 7 are excluded from the Matching price comparison (none). no comparable sourced unit for this job; chat input $/1M and other units were not borrowed
Runners-up
Zep
Pick when agents need temporal/entity graph memory, not just vector snippets. Mem0 for simpler recall.
Letta Cloud
Choose when the agent IS a long-lived stateful runtime. For bolt-on memory use Mem0/Zep.
Supabase (pgvector)
Depot default for most agent apps under ~25–50M vectors. Don't add Pinecone until Postgres actually hurts.
Supermemory
Managed context engine when you want memory without running a vector DB. Mem0 for simpler fact API; Cognee…
Memobase
Depot pick for portable/user-profile memory (MCP across Claude/ChatGPT/agents). Mem0 remains general…
Cognee
Graph memory when documents→ontology matter. Zep for temporal bipartite graphs; Mem0 for simplest hosted…
When NOT to use the top pick
Need temporal knowledge graphs — Zep; stateful agent runtime — Letta; already have pgvector.
Full ranking (score table)
Ranked with this JTBD's weights. Scores are curated estimates unless marked otherwise. Agents: prefer /api/decide then this table for tie-breaks.
| # | Provider | Overall | Fit | $/perf | Latency | DX | As of |
|---|---|---|---|---|---|---|---|
| 1 | Supabase (pgvector) | 8.6 | 8.5 | 9.0 | 8.6 | 9.4 | 2026-09-14 |
| 2 | Cognee | 8.1 | 8.4 | 8.8 | 7.6 | 8.2 | 2026-09-14 |
| 3 | Memobase | 8.0 | 8.0 | 9.0 | 7.4 | 8.6 | 2026-09-14 |
| 4 | Supermemory | 7.9 | 8.4 | 7.8 | 8.0 | 8.8 | 2026-09-14 |
| 5 | Mem0Depot Pick | 7.6 | 7.8 | 8.0 | 7.4 | 8.8 | 2026-09-14 |
| 6 | Zep | 7.5 | 8.2 | 7.0 | 7.6 | 7.8 | 2026-09-14 |
| 7 | Letta Cloud | 7.4 | 8.0 | 7.8 | 7.2 | 8.0 | 2026-09-14 |
Score methodology for this job
DX + pricePerf for bolt-on memory; watch retrieval metering.
capabilityFit: 26%pricePerformance: 12%latencyReliability: 12%developerDx: 22%privacyPosture: 12%lockInRisk: 8%maturity: 8%