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Maximem Synap vs PMB: Which is Better in 2026?

Choosing between Maximem Synap and PMB comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.

Bottom line: PMB is our overall pick for AI agents workflows. Pick Maximem Synap if you need a free tier to start with.

··Methodology
Editor reviewed0 verified reviews comparedPricing checked Aug 2026

Short on time? Here's the quick answer

We've tested both tools. Here's who should pick what:

Maximem Synap

AI agent memory that remembers across sessions

Best for you if:

  • • You need ai agent memory that remembers across sessions
  • • You want to start free and upgrade later

PMB

Local-first AI memory for coding agents. Recall context instantly

Best for you if:

  • • You need something completely free
  • • Open-source, local-first memory for AI coding agents that automatically records and recalls context without cloud dependencies
  • • Injects relevant lessons, decisions, and project overview before the agent reasons, using sub-millisecond hybrid recall (BM25 + dense vectors + entity graph)
At a Glance
Maximem SynapMaximem Synap
PMBPMB
Starts at
FreeFree tier available
FreeFree tier available
Best For
AI AgentsAI Agents
Rating
--
Free plan
 Yes Yes

Choose Maximem Synap or PMB?

Maximem Synap

Choose Maximem Synap if

AI agent memory that remembers across sessions

  • You need AI agents features specifically.
PMB

Choose PMB if

Local-first AI memory for coding agents. Recall context instantly

  • Fully local and open-source (Apache-2.0) — no data leaves your machine, no API keys needed
  • Works across multiple AI coding agents (advanced models, Cursor, Zed) without losing context
  • Fast hybrid recall (minimal latency) with no LLM call on the read path, keeping latency minimal
  • You want a fully free tool (Maximem Synap requires payment)
Maximem Synap logo

Maximem Synap

AI agent memory that remembers across sessions

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TOP RATED
PMB logo

PMB

Local-first AI memory for coding agents. Recall context instantly

Visit Website
FeatureMaximem SynapPMB
Pricing ModelFreemiumFree
User RatingNo ratings yetNo ratings yet
Categories
AI AgentsDeveloper Tools
AI AgentsDeveloper Tools

In-Depth Analysis

Maximem SynapMaximem Synap

AI agent memory that remembers across sessions

Starts at Free
Fair value

The pricing is fair for teams needing persistent AI memory, with the Starter tier at $19/month being a generous launch price for 25,000 credits and 3 agents.

Watch out

Overage fees start at $2.00 per 1K credits

Key features

Entity resolution and temporal reasoning over facts that change between sessionsMulti-tenant scoping at client, user and customer levels22 native framework integrations, including LangChain, LlamaIndex, CrewAI and OpenAI Agents SDKControlled forgetting, with user-level edit and delete of stored memoriesRemote MCP server for no-code platforms such as n8n and Gumloop

PMBPMB

Local-first AI memory for coding agents. Recall context instantly

Starts at Free

Strengths

  • +Fully local and open-source (Apache-2.0) — no data leaves your machine, no API keys needed
  • +Works across multiple AI coding agents (advanced models, Cursor, Zed) without losing context
  • +Fast hybrid recall (minimal latency) with no LLM call on the read path, keeping latency minimal

Weaknesses

  • -Requires initial setup and configuration for each agent (though simplified with pmb connect commands)
  • -Focused on AI coding agents; may not be designed for general AI assistant memory (e.g., chat bots outside coding)

Key features

Automatic memory injection before the model thinks (pre-read) and journaling after actions (post-write)Hybrid recall with BM25, dense vector embeddings, entity graph, and optional reranker fused via Reciprocal-Rank-FusionSub-millisecond async writes: returns instantly to agent, embeds and vector storage happen in background threadMemory scoring: tracks whether each lesson is followed by the agent; flags ignored lessons as deadInteractive local dashboard with entity graph map, timeline (git-graph style), and overviewNo LLM call on the read path; optional summarization and graph extraction can run on local Ollama models

Pricing: Maximem Synap vs PMB

PlanMaximem SynapPMB
Tier 1
Free
Trial
N/A
Tier 2
$19/month
Starter
N/A
Tier 3
$249/month
Pro
N/A
Tier 4
$999/month
Scale
N/A
Tier 5
Custom
Enterprise
N/A

Pricing verified from each vendor's public pricing page. Compare in detail on Maximem Synap pricing and PMB pricing.

Who Should Use What?

On a budget?

PMB is free. Maximem Synap is freemium.

Go with: PMB

Want the highest-rated option?

Neither has ratings yet.

Too early to call on ratings — compare on features and pricing.

Value user reviews?

Neither has ratings yet.

Too early to call — neither has ratings yet.

3 Questions to Help You Decide

1

What's your budget?

Maximem Synap is freemium. PMB is free. Go with PMB if free matters most.

2

What's your use case?

Both are ai agents tools. Compare their specific features to decide.

3

How important are ratings?

Neither has ratings yet.

Key Takeaways

PMB

  • Completely free
  • Our pick for this comparison

Maximem Synap

  • Choose if you want aI agent memory that remembers across sessions

The Bottom Line

PMB is our pick.

Frequently Asked Questions

Is Maximem Synap or PMB better?

PMB is rated in our evaluation. Maximem Synap is freemium and PMB is free.

What are Maximem Synap and PMB used for?

Maximem Synap: AI agent memory that remembers across sessions. PMB: Local-first AI memory for coding agents. Recall context instantly.

What does Maximem Synap cost vs PMB?

Maximem Synap is freemium (free tier + paid plans). PMB is completely free. Visit their websites for detailed pricing.

Related Comparisons & Resources

Maximem Synap AlternativesPMB AlternativesMaximem Synap Full ReviewPMB Full Review
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