Cortex
Shared semantic memory for all your AIs — one external, model-agnostic brain that decides what's worth remembering.
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What is Cortex?
Cortex is a semantic memory infrastructure that serves as a shared external brain for multiple AI models and agents. It remembers decisions, context, and sources across conversations using an open MCP standard, extending existing AIs without replacement. Patent-pending and currently in production.
Cortex pricing
Pricing model: Freemium
Free trial available (connect in 2 minutes); paid pricing not disclosed
Cortex pros
- Selective memory: rejects ~80% of trivial data to maintain relevance and performance over time instead of drowning in noise
- Works across multiple AIs seamlessly—switch models anytime while preserving all accumulated knowledge and context
- Measures prediction accuracy by comparing forecasts to actual outcomes, letting you quantify reliability rather than guess
- Distinguishes verified facts from hypotheses with confidence levels, so you know the weight of each memory
Cortex cons
- Requires MCP support from your AI platforms; not all providers may have full integration
- No transparent pricing information provided—free trial offered but paid tiers and costs are unclear
- Data privacy and storage details are not addressed on the public page
Frequently asked questions about Cortex
Does Cortex replace my current AI assistants?
No. Cortex extends your existing AIs rather than replacing them. You continue using the models you already work with; they simply share the same semantic memory through MCP.
What happens to my knowledge when I switch AI models?
Everything you built and remembered stays where it is. When you change assistants, your accumulated context and memories remain accessible through Cortex.
How does Cortex decide what to remember?
It rejects approximately 80% of information requested for storage—only retaining data that adds genuine value. It categorizes inputs as Accepted (new), Corroborated (reinforces existing notes), Contradicted (flags conflicts), or Rejected (adds nothing).