Comparison
Three categories of AI memory exist today. Platform memory lives inside one tool. Agent memory infra is built for developers. Engrams is project memory that works across every AI you use.
| Feature | Engrams | ChatGPT Memory | Claude Projects | Mem0 | Zep |
|---|---|---|---|---|---|
| Works across AI platforms | Yes — 6+ | ChatGPT only | Claude only | Via MCP + SDK | Via SDK |
| MCP native | Yes | Consumer | Connectors | Yes | Graphiti |
| Structured memory types | 7 types | Unstructured | Files + instructions | 3 types | Facts + graph |
| Task management | Built-in | No | No | No | No |
| Decision tracking | Built-in | No | No | No | No |
| Session handoffs | Episodes | No | No | No | No |
| Shared projects | Yes | No | Team plan | Org memory | Enterprise |
| Agent coordination | Registry + inbox + pull | No | No | No | No |
| Agent inbox / pull | Native | No | No | No | No |
| Cross-platform memory continuity | Yes — pull() | No | No | SDK only | SDK only |
| Setup time | 3 min | Built-in | Built-in | SDK integration | SDK integration |
| Target user | Multi-AI workers | ChatGPT users | Claude users | Developers | Developers |
Cross-platform memory continuity means your agents stay in sync across tools. Save a decision in ChatGPT, switch to Claude Code, run pull() — it returns the decision, new tasks, and the latest handoff. No paste. No re-explaining. No context lost between platforms.
Each solves a different problem. Choose based on how you work.
Category 1
Platform memory
ChatGPT Memory, Claude Projects, Cursor Rules, Windsurf Memories. Built into one tool. Works great if you only use that tool.
Category 2
Agent memory infrastructure
Mem0, Zep, Letta, Cognee. APIs and SDKs for developers building AI agents. Powerful, but you need to write code to use them.
Category 3
Cross-platform project memory
This is where Engrams lives. One memory layer that works across Claude, ChatGPT, Gemini, Codex, Cursor, and Lovable. Share projects with collaborators. Track decisions, tasks, and handoffs.
The better each AI platform's memory gets, the more you want to use multiple platforms. Claude Code for coding. ChatGPT for research. Gemini for analysis. But each one forgets what the others know.
Anthropic won't build memory that helps ChatGPT. OpenAI won't build memory that helps Claude. It's not a capacity problem — it's a business structure problem. No platform will solve it.
Engrams sits outside the platforms. Same project, same decisions, same context — regardless of which AI you're in.
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