Compare providers
Pick up to three. Scores are curated estimates on a 0–10 scale. Lock-in: higher = worse.
| Dimension | E2B | Letta Cloud |
|---|---|---|
| Overall | 8.6 | 7.4 |
| Capability fit | 9.4 | 8.0 |
| Price / performance | 8.0 | 7.8 |
| Latency / reliability | 8.6 | 7.2 |
| Developer & agent DX | 9.4 | 8.0 |
| Privacy / data retention | 8.5 | 7.2 |
| Lock-in risk (higher = worse) | 4.0 | 5.5 |
| Maturity / track record | 8.0 | 6.8 |
| Pricing | Firecracker microVM sandboxes billed per second; templates; code interpreter for agents. | As of 2026-09-14: Stateful agent runtime (ex-MemGPT). Free tier BYOK + limited agents; Pro ~$20/mo; API plan ~$20/mo + ~$0.10/active agent/mo + tool-exec ~$0.00015/s (secondary/rou… |