ReasonGraph Cloud
ReasonGraph Cloud: A causal graph memory layer for agents that need traceable, multi-hop recall. Ranked #16 of 34 in AI Agent Memory Tools by our editors (6.6/10); pricing: Free plan; best for teams needing causal and counterfactual recall.
At a glance
- Editor score6.6 / 10
- PricingFree plan
- Best forTeams needing causal and counterfactual recall
- Free planYes
- Paid from€29/mo
- Semantic memoryYes
- Facts checked13 Oct 2026
Where it wins
- Combines semantic retrieval with multi-hop graph traversal
- Tracks contradictions, superseding facts and historical states
- Offers HTTP API, remote MCP, LangChain and LangGraph integrations
Where it doesn't
- Free plan is capped at 10,000 requests per month
- Priority support is included only in the Scale plan
- Hosted service is described as early access
Our verdict on ReasonGraph Cloud
ReasonGraph Cloud is a hosted memory service for AI agents and teams that need persistent, traceable recall. It stores text facts, names agent sessions, extracts entities and cause-and-effect relations, and connects information across agents, sessions and sources. Its audience includes small and mid-market teams building agents that need causal tracing, root-cause analysis, downstream-effect queries, time travel, or counterfactual what-if analysis.
The freemium pricing structure starts with a Free plan at €0 per month, including the full API, a remote MCP endpoint, the console, 10,000 requests per month, and no card requirement. Pro costs €29 per month for 100,000 requests and one product with one team. Team costs €99 per month for 500,000 requests and support for several agents and sessions. Scale costs €299 per month for 2 million requests and priority support. The service runs through web, API, cloud, or self-hosted deployments. Integrations include MCP, LangChain, and LangGraph, with Python and JavaScript/TypeScript access described alongside the HTTP API.
Its standout capability is the combination of semantic retrieval and graph traversal: an answer can include multi-hop reasoning paths and the facts behind it. Contradiction handling preserves superseding facts and history, while time-travel and what-if queries support changing-state analysis. A browser console accepts chat and document or topic input, and the matching MIT-licensed library supports self-hosting. Teams should choose ReasonGraph Cloud when causal relationships, historical traceability, and counterfactual questions matter more than a basic fact store. Teams with modest request volumes can start on Free, while higher-volume workloads need paid tiers; organizations preferring a mature hosted service should note its early-access status.
Your product? Our editors can test ReasonGraph Cloud in depth and publish a review, labelled as paid · from $99/mo →
ReasonGraph Cloud pricing
All 4 ReasonGraph Cloud plans and prices →
ReasonGraph Cloud fact sheet
| Free plan | Yes |
|---|---|
| Paid from | €29/mo |
| Semantic memory | Yes |
| Episodic memory | Not verified |
| User/profile memory | Not verified |
| Graph-based memory | Yes |
| Deployment options | Both |
| SDK languages | 2 |
| Retention policy | Configurable |
| Deployment | Cloud, Self-hosted |
| Platforms | Web |
| Support | Email, Docs |
| Built for | Small business, Mid-market (editorial estimate) |
| Integrations | 3 integrations: LangChain, LangGraph, MCP |
| Pricing | Free plan (source) |
| Website | memory.primaxiom.ai |
| Facts checked | 13 Oct 2026 |
ReasonGraph Cloud integrations
ReasonGraph Cloud lists 3 integrations on its own site.
- LangChain
- LangGraph
- MCP
Alternatives to ReasonGraph Cloud
- Cloudflare Agent MemoryA cloud API for scoped, searchable memory across AI agent profiles and conversations.9.2
- Mem0A flexible memory layer with semantic, graph, and self-hosted deployment options.8.8
- MCP Memory ServiceA broad open-source memory layer for teams that can manage deployment and configuration.7.9
See all ReasonGraph Cloud alternatives →
Used ReasonGraph Cloud? Be the first to review it
The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used ReasonGraph Cloud for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
Write a reviewTwo minutes · verified accounts only · read by an editor before it appears
Featured on iTechGuides
ReasonGraph Cloud is listed in our AI Agent Memory Tools directory. Add the badge to your site — it links back to this page.
<a href="https://www.itechguides.com/products/reasongraph-cloud/"><img src="https://www.itechguides.com/best/badge/reasongraph-cloud.svg" alt="Featured on iTechGuides" width="230" height="46"></a>
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. How we rank.
Last updated · How we research and update