Sigma Runtime
Persistent runtime for long-running AI systems
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Sigma Runtime - Persistent runtime for long-running AI systems

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Sigma Runtime is a persistent runtime for long-running AI systems. Instead of treating every interaction as a new session, Sigma Runtime preserves continuity across conversations, workflows, and operational tasks. It’s designed for AI that operates over days, weeks, or months, enabling persistent state, adaptive identity, and seamless context continuity. Open Beta is now available.

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Hi everyone! 👋 I’m Eugene, founder of Sigma Runtime. We built Sigma Runtime because we kept running into the same limitation: most AI systems are designed around isolated sessions, while many real workflows naturally evolve over days, weeks, or even months. Sigma Runtime explores a different approach: a persistent runtime that preserves continuity across long-running interactions instead of treating every session as disposable. Open Beta is still early, and we’re looking for thoughtful feedback from people building AI products, agents, research tools, companions, or operational workflows. A few questions we’d genuinely love to discuss: • At what point do your AI sessions start breaking down? • What do you currently do when important context no longer fits? • What would make persistent AI genuinely useful in your work? We’ll be here throughout the launch to answer questions and discuss the architecture, roadmap, and lessons we’ve learned so far. Thanks for checking out Sigma Runtime!