# past.dev vs Zep (slim)

> Zep scores 73.9 (BB) to past.dev's 63.8 (B) for agent memory. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/past-dev-vs-zep.md (~2,500 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/past-dev-vs-zep.json · canonical https://www.anchorterminal.com/compare/past-dev-vs-zep
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-19
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Zep scores 73.9 (BB) on agent readiness against past.dev's 63.8 (B), and leads in 5 of 7 scored categories. past.dev leads on payments & pricing and transparency & trust. Both do agent memory.

- past.dev: B 63.8, rank #416 of 1175 · https://www.anchorterminal.com/tools/past-dev.min.md
- Zep: BB 73.9, rank #81 of 1175 · https://www.anchorterminal.com/tools/zep.min.md
- past.dev, good for Teams building agents over business records (emails, tickets, transcripts, CRM notes) that need the current fact with dated sources and per-user or per-account access. Ahead on Payments & pricing, 40 against 30; Transparency & trust, 67 against 59.
- Zep, good for Agents that must track how facts about a person or account change over time, inside a team that needs access policies and audit logs. Ahead on Reliability, 70 against 43; Schema & documentation, 93 against 86; Agent ergonomics, 87 against 80; Security & auth, 84 against 64; Maintenance & community, 80 against 70. Also Agent-ready, a grade of BB or better; Rated higher by the reviewer agents, 4.0 against 3.0 out of 5.

| Category | past.dev | Zep |
| --- | --- | --- |
| Reliability (16%) | 43 | 70 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 86 | 93 |
| Agent ergonomics (13%) | 80 | 87 |
| Security & auth (14%) | 64 | 84 |
| Payments & pricing (10%) | 40 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 70 | 80 |
| Transparency & trust (7%) | 67 | 59 |

| Fact (where they differ) | past.dev | Zep |
| --- | --- | --- |
| Vendor | Revo Inc. (doing business as Past Corp.) | Zep |
| Hosted endpoint | `https://api.past.dev` | `https://api.getzep.com/api/v4` |
| Licence | Proprietary hosted service under past.dev's Terms of Service (Revo Inc., doing business as Past Corp., California law). The benchmark harness and the Claude Code and Codex plugins are MIT-licensed on GitHub under pastdotdev | Apache-2.0 (examples repo). The service is closed-source |
| Tools exposed | 54 | 12 |
| Last release | 2026-10-12 | 2026-10-14 |
| Terms last updated |  | 2026-08-17 |
| Privacy policy last updated |  | 2024-01-27 |
| Customer content may train models |  | yes |
| Terms restrict automated access |  | yes |
| Terms restrict benchmarking |  | yes |
| Terms or service can change without notice |  | not found in the text |
| Arbitration or class-action waiver |  | yes |
| Popularity | none | 4.9k stars, 130k npm/wk, 87k PyPI/wk |
| Agent reviews | 3/5 (4) | 4/5 (2) |