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Head to head

GrayMatter vs World Model MCP

Same numbers we show everywhere else, lined up. Ratings come from users, the grade comes from our scanner, adoption comes from public registries.

GrayMatterio.github.angelnicolasc/graymatter
B
No reviews yet

Persistent agent memory as a single Go binary: knowledge graph, TUI observability, zero infra.

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World Model MCPio.github.putervision/world-model-mcp
A
No reviews yet

Persistent 3D/2D spatial world model for AI agents with entity tracking and simulation.

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The short version

Neither has been reviewed yet, so the comparison rests on the scan and the public usage numbers. The safety scan favours World Model MCP (94/100 against 70).

 GrayMatterWorld Model MCP
User ratingNo reviews yetNo reviews yet
Safety gradeB70/100A94/100
AdoptionGrowingEstablished
GitHub stars47120
Downloads / week–4.2k
Runs whereYour machine (local)Your machine (local)
Gateway-readyNoNo
Tools—15
Write actions—3
Price per callFreeFree
LicenceMITMIT
Last release2026-09-202026-09-15
CategoryAI and agentsAI and agents

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