{"jtbd":{"id":"temporal-graph-memory","slug":"temporal-graph-memory","name":"Temporal / graph agent memory","shortName":"Temporal / graph agent memory","problemStatement":"Agents must recall entities, relationships, and time-evolving facts — not just similar chunks."},"pick":{"id":"zep","slug":"zep","name":"Zep","tagline":"Pick when agents need temporal/entity graph memory, not just vector snippets. Mem0 for simpler recall.","website":"https://www.getzep.com","overall":7.43,"scoreBand":{"low":6.8,"mid":7.4,"high":8,"halfWidth":0.6,"basis":"editorial_prior","display":"6.8–8.0 (editorial prior)"},"scoreLayers":{"editorialPrior":7.43,"measuredBenchmark":null,"verifiedOutcomeScore":null,"verifiedOutcomeCount":0,"accountRuntimeState":"unprobed"},"pricingLastVerifiedAt":"2026-10-27","editorialPriorAsOf":"2026-09-14","pricingNotes":"As of 2026-10-24 (getzep.com/pricing, fetched 2026-10-24): Temporal knowledge-graph memory (Graphiti). 'Self-serve plans are credit based.' Free: 'Start free with 10,000 credits a month.' ('No rollover or auto-topup.'). Flex '$125 / month billed monthly' ('50,000 credits included. Then $25 / 10,000 credits.', '30-day rollover', '600 requests per minute'). Flex Plus '$375 / month billed monthly' ('200,000 credits included. Then $75 / 40,000 credits.', '60-day rollover', '1,000 requests per minute'). Enterprise custom ('negotiated rates'). Annual billing: 'Save 17%' (the annual price is not published in the page text). Credits: '1 credit per Episode up to 350 bytes; +1 credit per additional 350 bytes (or part).'; '0 credits for retrieval, storage, threads, users, and graph storage.' See plan limits (/api/estimate) for the encoded plans. Self-host Graphiti + Neo4j/FalkorDB/Kuzu/Neptune.","scores":{"capabilityFit":8.2,"pricePerformance":7,"latencyReliability":7.6,"developerDx":7.8,"privacyPosture":7.8,"lockInRisk":5.2,"maturity":7,"overall":7.43,"kind":"curated_estimate","confidence":"high","asOf":"2026-09-14"}},"runnersUp":[{"id":"mem0","slug":"mem0","name":"Mem0","tagline":"Default hosted agent memory bolt-on. Model retrieval volume carefully; self-host OSS if caps hurt.","website":"https://mem0.ai","overall":7.58,"scoreBand":{"low":7,"mid":7.6,"high":8.2,"halfWidth":0.6,"basis":"editorial_prior","display":"7.0–8.2 (editorial prior)"},"scoreLayers":{"editorialPrior":7.58,"measuredBenchmark":null,"verifiedOutcomeScore":null,"verifiedOutcomeCount":0,"accountRuntimeState":"unprobed"},"pricingLastVerifiedAt":"2026-10-27","editorialPriorAsOf":"2026-09-14","pricingNotes":"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', '5,000 retrieval requests / month'); Pro '$249 / month' ('500,000 add requests /month', '50,000 retrieval requests /month', 'Graph memory (entity linking)'); Enterprise 'Custom' ('Unlimited add requests', 'Unlimited retrieval requests'). No per-request overage rate is published. The earlier Growth plan no longer appears on the page. Meters adds AND retrievals — read-heavy agents hit retrieval caps first. See plan limits (/api/estimate) for the encoded plans. OSS Apache-2.0 core self-hostable.","scores":{"capabilityFit":7.8,"pricePerformance":8,"latencyReliability":7.4,"developerDx":8.8,"privacyPosture":7,"lockInRisk":5,"maturity":7.2,"overall":7.58,"kind":"curated_estimate","confidence":"high","asOf":"2026-09-14"}},{"id":"weaviate","slug":"weaviate","name":"Weaviate","tagline":"Best when hybrid search and modularity matter. Cloud for convenience; self-host when lock-in anxiety spikes.","website":"https://weaviate.io","overall":8.15,"scoreBand":{"low":7.6,"mid":8.2,"high":8.8,"halfWidth":0.6,"basis":"editorial_prior","display":"7.6–8.8 (editorial prior)"},"scoreLayers":{"editorialPrior":8.15,"measuredBenchmark":null,"verifiedOutcomeScore":null,"verifiedOutcomeCount":0,"accountRuntimeState":"unprobed"},"pricingLastVerifiedAt":"2026-10-27","editorialPriorAsOf":"2026-09-14","pricingNotes":"Open-source + Weaviate Cloud; modular vectorizers; hybrid search; usage/cluster pricing on cloud.","scores":{"capabilityFit":8.8,"pricePerformance":7.5,"latencyReliability":8.4,"developerDx":8.2,"privacyPosture":8.2,"lockInRisk":3.5,"maturity":8.8,"overall":8.15,"kind":"curated_estimate","confidence":"high","asOf":"2026-09-14"}},{"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.","website":"https://www.letta.com","overall":7.39,"scoreBand":{"low":6.8,"mid":7.4,"high":8,"halfWidth":0.6,"basis":"editorial_prior","display":"6.8–8.0 (editorial prior)"},"scoreLayers":{"editorialPrior":7.39,"measuredBenchmark":null,"verifiedOutcomeScore":null,"verifiedOutcomeCount":0,"accountRuntimeState":"unprobed"},"pricingLastVerifiedAt":"2026-10-27","editorialPriorAsOf":"2026-09-14","pricingNotes":"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 2026-10-25 https://www.letta.com/pricing answers HTTP 200 to plain curl via redirects (301 to https://docs.letta.com/letta-code/pricing, then 308 to https://docs.letta.com/pricing), not bot-blocked; the docs page quotes 'Pro For personal use. $20 /month', 'API Plan For teams building on the Letta API. $20 /month Unlimited agents $0.10 / active agent / mo $0.00015 / sec tool execution' and 'Free plans are limited to 3 stateful agents.' Stored figures are not re-priced here; any price change goes through the reviewed --catalog step. OSS self-host Apache-2.0. Re-verify console before commits.","scores":{"capabilityFit":8,"pricePerformance":7.8,"latencyReliability":7.2,"developerDx":8,"privacyPosture":7.2,"lockInRisk":5.5,"maturity":6.8,"overall":7.39,"kind":"curated_estimate","confidence":"medium","asOf":"2026-09-14"}},{"id":"cognee","slug":"cognee","name":"Cognee","tagline":"Graph memory when documents→ontology matter. 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