← Compare hub
Mem0 vs Letta Cloud
Agent-native side-by-side. Scores are curated estimates on a 0–10 scale. Lock-in: higher = worse. Prefer JTBD picks via /api/decide when choosing for a job.
| Dimension | Mem0 | Letta Cloud |
|---|---|---|
| Overall | 7.6 | 7.4 |
| Capability fit | 7.8 | 8.0 |
| Price / performance | 8.0 | 7.8 |
| Latency / reliability | 7.4 | 7.2 |
| Developer & agent DX | 8.8 | 8.0 |
| Privacy / data retention | 7.0 | 7.2 |
| Lock-in risk (higher = worse) | 5.0 | 5.5 |
| Maturity / track record | 7.2 | 6.8 |
| Pricing | As of 2026-10-24 (mem0.ai/pricing, fetched 2026-10-24): Hosted memory layer. Hobby 'Free' ('10,000 add requests/ month', '1,000 retrieval requests/ month', '1 project'); Starter '$19 / month' ('50,000 add requests /month… | 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/roundup figures as stored then). As of 2026… |
| Tagline | Default hosted agent memory bolt-on. Model retrieval volume carefully; self-host OSS if caps hurt. | Choose when the agent IS a long-lived stateful runtime. For bolt-on memory use Mem0/Zep. |
Mem0
Default hosted agent memory bolt-on. Model retrieval volume carefully; self-host OSS if caps hurt. Strengths: Drop-in agent memory API; OSS + hosted; Fast prototype path.
Strengths
- Drop-in agent memory API
- OSS + hosted
- Fast prototype path
Weaknesses
- Retrieval metering surprises
- Graph gated to higher tiers
- Not a full vector DB
Letta Cloud
Choose when the agent IS a long-lived stateful runtime. For bolt-on memory use Mem0/Zep. Strengths: Agent-owned memory model; OSS + cloud; Identity/stateful agents.
Strengths
- Agent-owned memory model
- OSS + cloud
- Identity/stateful agents
Weaknesses
- More runtime than pure memory API
- Pricing mixes hosting + usage
- Learning curve
More pairs: anthropic-vs-openai · openai-vs-google-ai · groq-vs-fireworks · fireworks-vs-together · qdrant-vs-pinecone · pinecone-vs-supabase-pgvector · e2b-vs-modal · browserbase-vs-firecrawl