Zipline vs Threadless AI

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Zipline compared with Threadless AI
Detail	Zipline	Threadless AI
What it does	One thread for every AI assistant you use	Hosted memory for AI agents that forgets like people do
Stage	MVP	Not given
Founded	Not given	Not given
Based in	IE	Not given
Pricing model	Free trial	Free trial
Pricing	Not given	Two meters: user turns (per user turn) and stored memory (per GB-month). Pricing to be announced. Free tier with monthly allowance of turns and memories.
Key features	TypeScript SDK MCP server integration	Conversation episodes with automatic cutting and concept-based organization Activation fading by square root of time with significance tracking Automatic fact extraction and indexing for recall Recall system that surfaces relevant past facts when needed Sleep function that fades context after 24+ hours of silence Fallback to local tail when service is unreachable
What makes it different	Single conversation thread across multiple AI assistants Works in native AI assistant apps without switching Uses open standard MCP for integrations Automatic task pickup for Claude and Grok Full user control with pause and revoke options	Forgets like people do with fading by time, not truncation Your model, your key, your loop; service only holds history Facts kept permanently even as episodes fade from view Decorate, submit, report: only three lines of integration Human-inspired memory mechanism based on cognitive science
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	0	0
Citation Flow (Majestic)	15	0
Referring domains (Majestic)	3	0

4 details filled in for both companies.

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