Novyx vs. Letta
Letta (formerly MemGPT) is a stateful agent framework. Novyx is a memory layer that works with any framework.
| Feature | Novyx | Letta |
|---|---|---|
| Memory layer (bring your own agent) | ✓ | — |
| Full agent framework | — | ✓ |
| Point-in-time rollback | ✓ | — |
| Cryptographic audit trail | ✓ (SHA-256 + RSA) | — |
| Replay (time-travel debugging) | ✓ | — |
| Cortex (autonomous maintenance) | ✓ | — |
| Policy-as-code (custom YAML) | ✓ | — |
| Approval workflows | ✓ (Solo/Team/Enterprise) | — |
| Per-agent policy overrides | ✓ | — |
| Self-managing memory | Cortex | Built-in |
| MCP server | 107 tools | — |
| Threat intelligence | ✓ (cross-tenant) | — |
| Auto defense | ✓ (self-tuning) | — |
| Attack correlation | ✓ | — |
| Framework-agnostic | ✓ | — |
Frequently Asked Questions
What is the difference between Novyx and Letta (MemGPT)?
Letta (formerly MemGPT) is a full agent framework with built-in self-managing memory. Novyx is a framework-agnostic memory and governance layer — it works with LangChain, CrewAI, LlamaIndex, or any custom agent. Novyx adds rollback, cryptographic audit trails, replay debugging, and governed action control that Letta doesn't provide.
Should I use Letta or Novyx for my AI agent?
If you want an all-in-one agent framework with self-managing memory, use Letta. If you want a memory and governance layer that plugs into any framework — with rollback, audit trails, and production observability — use Novyx.
Does Novyx have self-managing memory like MemGPT?
Yes. Novyx Cortex provides autonomous memory maintenance: consolidation merges duplicates, reinforcement boosts important memories, and decay removes noise. It's available on all tiers.
Can I use Novyx with Letta?
Novyx is framework-agnostic. You can use Novyx as the persistent memory backend for any agent framework, including custom setups. Direct Letta integration is not yet available but the REST API works with any HTTP client.
Does Letta have policy-as-code or approval workflows?
No. Letta is an agent framework with self-managing memory but no governance layer for actions. Novyx Control lets you author custom YAML policies, route high-severity actions through Solo/Team/Enterprise approval modes, and override policies on a per-agent basis.
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