Agent Memory in 2026: Mem0 vs Zep vs Letta vs LangMem
Architecture deep-dive of Mem0, Zep/Graphiti, Letta, and LangMem - what each optimises for, when to pick which, and which benchmark claims to ignore.
CogniFlow Labs designs and engineers production-grade agentic AI, cloud-native platforms, and enterprise AEM experiences - for companies that need working AI, not just a proof of concept.
Most AI projects fail not because the models are bad, but because the engineering around them is weak. No observability. No fallback logic. No production-grade infrastructure. CogniFlow Labs exists to close that gap.
Founded by Maidul Haque - Software Architect with 13+ years shipping production Java systems, enterprise AEM platforms, and cloud-native microservices - we bring the same engineering rigour to AI that we apply to every other layer of the stack.
Whether you need an autonomous agent, a RAG pipeline, an AEM platform with AI personalisation, or a cloud migration - every system we deliver is built to run reliably under real-world conditions, not just in a sandbox.
Every engagement has a clear scope, defined deliverables, and a production outcome. No vague retainers. No surprise scope creep.
"A working autonomous agent - deployed, monitored, and ready to operate unsupervised."
I design and deliver production-grade agentic systems - from single-task LLM pipelines to complex multi-agent orchestrations with memory, tool use, and human-in-the-loop checkpoints. Every system ships with observability, cost controls, and fallback logic built in.
What you receive
Best for: Enterprises automating complex workflows that currently require human judgment
"A blueprint that treats AI as a first-class citizen - not something bolted on later."
Most architectures fail AI because they weren't designed for it. I design systems from the ground up where AI workloads, data flows, and model boundaries are considered at every layer - before a line of code is written.
What you receive
Best for: Teams about to build an AI product and need to start on solid ground
"The cloud foundation your AI needs to run reliably - not just in demos."
I build and manage the infrastructure that keeps AI systems online, observable, and cost-efficient in production - from Kubernetes clusters optimised for LLM workloads to CI/CD pipelines with automated model evaluation gates.
What you receive
Best for: Teams whose AI prototypes keep breaking in production
"A complete application with AI embedded at the core - not added as a feature afterwards."
I build end-to-end web applications using Java/Spring Boot backends and React/Next.js frontends, where AI is woven into the product logic from day one - not bolted on as a chatbot after the fact.
What you receive
Best for: Startups and enterprises building a new AI-powered product from scratch
"Enterprise AEM platforms where AI doesn't just support the experience - it shapes it."
I deliver enterprise AEM platforms enhanced with AI personalisation - intelligent content decisions via Adobe Target, real-time audience segmentation via AEP, and headless architectures capable of serving AI-generated content at scale.
What you receive
Best for: Enterprises looking to upgrade AEM or add AI personalisation to existing platforms
"An AI roadmap grounded in engineering reality - not vendor hype or industry buzzwords."
I cut through the noise to give you an honest, technically grounded assessment of where AI can create real value in your business, what it'll actually take to build, and what the risks are.
What you receive
Best for: Leaders who need a credible AI strategy before committing engineering budget
Battle-tested technologies chosen for production reliability - not because they were trending on Hacker News.
These aren't demos. Every project below is a production system with real users and measurable outcomes.
Built a production multi-agent system with LangGraph + Claude API - full tool use, conversation memory, CRM integration, and human escalation logic. Zero prompt engineering shortcuts.
Redesigned a monolithic platform into AI-ready microservices on AWS - event-driven architecture, semantic search layer, and AI recommendation engine integrated from day one.
Architected a global AEM Cloud platform for a Fortune 500 retailer - AI-driven personalisation via Adobe Target, AEP audience segmentation, serving 2M+ monthly users across 12 markets.
Full-stack dashboard processing 500K+ events/day, with an LLM layer that generates natural-language summaries and anomaly explanations alongside the live charts.
Kubernetes-based deployment pipeline with automated model evaluation gates - deployments blocked if new model version underperforms baseline. Blue-green strategy, full rollback in under 2 minutes.
Led architecture from legacy monolith to event-driven microservices - PCI-DSS compliant, with a new AI-powered fraud detection layer integrated at the transaction processing stage.
A structured process built around one goal: shipping working AI - on time, on budget, with full transparency.
We map your AI goals, data landscape, technical constraints, and success metrics - before committing to any solution or stack.
You receive a full architecture proposal, ADRs, and phased roadmap before development starts. No surprises mid-build.
Agile delivery in 2-week sprints - weekly demos, clear progress tracking, and a staging environment from sprint one.
Production deployment with observability dashboards, runbooks, and 30-day post-launch support. Your team owns it from day one.
Three clear engagement models depending on what you need. Every project starts with a free 30-minute discovery call.
Indicative starting prices — every engagement is scoped to your specific problem and context. Get in touch and we'll send a detailed quote within 48 hours.
A targeted, time-boxed engagement to unblock a decision, validate an approach, or diagnose a problem. Minimum overhead, maximum clarity.
What's included
Ideal for: Teams validating an AI idea, needing a second opinion, or trying to get unstuck on an architecture decision before committing to a build.
Get a Quote →A fully scoped project engagement delivering a production system — from architecture through development, testing, deployment, and handover.
What's included
Ideal for: Startups and enterprises building a new AI system, full-stack application, cloud platform, or AEM implementation.
Get a Quote →An ongoing retainer for businesses that need dedicated AI engineering expertise — without the overhead of a full-time hire. Scales with your needs month to month.
What's included
Ideal for: Scale-ups and enterprises that need sustained AI engineering leadership without committing to a senior in-house hire.
Get a Quote →Technical deep-dives on the systems, patterns, and decisions behind real AI and enterprise engineering.
Architecture deep-dive of Mem0, Zep/Graphiti, Letta, and LangMem - what each optimises for, when to pick which, and which benchmark claims to ignore.
How I built a self-hosted MCP server for AEM operations - 15 tools, dual-path AEMaaCS/6.5 support, query safety, and a production path for enterprise teams.
How GitNexus gives AI coding agents real codebase awareness - indexing pipeline, Leiden clustering, hybrid BM25+RRF search, and when to use it over RAG.
How I built a 4-layer semantic cache for e-commerce search - two-zone thresholds, adaptive TTL, Kafka invalidation, and six production pitfalls nobody documents.
AEM 6.5 support ends February 2027. An honest breakdown of your two paths - AEM LTS or AEMaaCS - and why the organisations that wait are the ones I see scrambling.
Tell us about your AI challenge. We'll come back within 24 hours with an honest assessment of how we can help - and whether we're the right fit.
Whether you need a production AI agent, a cloud migration, an AEM platform overhaul, or a straight-talking second opinion on your architecture - we're here to help you build the right thing, the right way.