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COMPARISON · CLOUD AGENT MEMORY
Local-First vs Cloud Agent Memory — Why It Matters
Cloud memory is convenient. Local memory is faster, cheaper, private, and works offline. A full comparison for developers choosing an agent memory layer.
The case for local-first agent memory
Cloud memory solutions — Mem0, cloud-synced Cursor, ChatGPT memory — offer convenience. But local-first wins on every axis that matters for professional developers.
| Dimension | Local (Nexus) | Cloud memory |
|---|---|---|
| Latency | ~1ms (SQLite) | 100–500ms |
| Data egress | Zero | Your code in cloud |
| Offline use | ✓ | ✗ |
| GDPR / compliance | Simple | Complex |
| Cost | Flat license | Per-query pricing |
| Air-gap compatible | ✓ | ✗ |
When cloud memory wins
Cloud memory makes sense when you need cross-device sync on personal projects. Nexus doesn’t sync across machines by design — your code stays on your machine.