{"id":"stateful-agent-runtime","slug":"stateful-agent-runtime","name":"Stateful long-lived agent runtime","shortName":"Stateful long-lived agent runtime","problemStatement":"Need agents with editable memory blocks and long-lived identity, not just a chat API + DB.","whenNotTopPick":"Stateless request/response agents — plain LLM API + Mem0.","categoryIds":["cat-vector-memory","cat-sandboxes-browsers"],"depotPickProviderId":"letta","depotPickRationale":"Runtime capability; Letta for memory-native agents, LangGraph/Temporal for orchestration.","runnersUpIds":["langgraph-cloud","temporal-cloud","mem0"],"weights":{"capabilityFit":0.26,"pricePerformance":0.16,"latencyReliability":0.16,"developerDx":0.18,"privacyPosture":0.1,"lockInRisk":0.08,"maturity":0.06},"methodologyNotes":"Runtime capability; Letta for memory-native agents, LangGraph/Temporal for orchestration.","tags":["stateful"],"depth":{"whenNotToUse":{"text":"Stateless request/response agents — plain LLM API + Mem0.","source":"editorial `whenNotTopPick` (data/jtbds.json)"},"whenNotToUseReason":null,"runnerUp":{"providerId":"langgraph-cloud","name":"LangGraph Platform / LangSmith Deploy","overallForJob":7.46,"pickOverallForJob":7.41,"beatsPickOn":["capabilityFit","latencyReliability","developerDx","maturity"],"source":"first resolvable entry of the job's editorially ranked `runnersUpIds`; scores are stored job-weighted scores"},"runnerUpReason":null,"lockIn":{"pickLockInRisk":5.5,"runnerUpLockInRisk":7.2,"scale":"0–10 stored curated estimate; higher = more lock-in (worse)","pickExitSignals":["open source (provider tag `oss`)"],"runnerUpExitSignals":[],"pickNotes":[],"selfHostFallback":[],"migration":"The pick has lower stored lock-in risk than runner-up LangGraph Platform / LangSmith Deploy (5.5 vs 7.2). Pick exit signals: open source (provider tag `oss`).","migrationReason":null,"derivedFrom":"stored lockInRisk scores, provider tags (oss, self-host, openai-compat, open-models), free rows that list this job, and verbatim provider notes. No migration guide was invented."}},"freshness":{"pick":{"score":{"asOf":"2026-09-14","ageDays":43,"stale":true,"staleAfterDays":30,"reason":null},"lastReviewed":{"asOf":"2026-09-14","ageDays":43,"stale":true,"staleAfterDays":30,"reason":null},"sourceCheck":{"checkedAt":"2026-10-27","sourceUrls":3,"sourcesReachable":3,"pricingRows":0,"pricingRowsReconfirmed":0,"note":"A source re-check confirms the page is reachable and, for pricing rows, that the stored amount and SKU name appear on it. It does not re-derive or change the score.","reason":null}}},"depotPick":{"id":"letta","slug":"letta","name":"Letta Cloud","tagline":"Choose when the agent IS a long-lived stateful runtime. For bolt-on memory use Mem0/Zep.","overall":7.41},"runnersUp":[{"id":"langgraph-cloud","slug":"langgraph-cloud","name":"LangGraph Platform / LangSmith Deploy","tagline":"Deploy here if your graphs already are LangGraph. Otherwise Inngest/Temporal + Langfuse to avoid stack…","overall":7.46},{"id":"temporal-cloud","slug":"temporal-cloud","name":"Temporal Cloud","tagline":"Default durable orchestration for serious long-running agents. Inngest/Trigger.dev for lighter DX.","overall":7.97},{"id":"mem0","slug":"mem0","name":"Mem0","tagline":"Default hosted agent memory bolt-on. Model retrieval volume carefully; self-host OSS if caps hurt.","overall":7.61}]}