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Product updates, research notes, and practical writing about building production software with AI agents.
Shaping UK Sovereign AI: The Lumen Sovereign Public Request for Input is Live
Help shape the future of Britain’s first sovereign frontier AI. Cosine is seeking public input on capabilities, use cases, and governance for Lumen Sovereign, our secure, UK-built model for critical sectors.
Launch2 min read
Recent blog posts
Launch
Building Lumen Sovereign: Cosine Forms Coalition with UK Industry Leaders
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Lumen Outpost Benchmark Report
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Introducing Lumen Outpost
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Training for Vibe: A Structured Approach to AI Behaviour
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Training Against Slop: A Structured Approach to AI Code Quality
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Training for Niche Languages: The Data Engine for Legacy Systems
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Cosine Swarm: Long-Horizon Agents Working in Parallel
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The Linux Approach: Embracing Complexity for Deeper Control
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Cosine CLI: The Runtime Behind Terminal-Native Engineering
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The Hidden Cost of AI Velocity: Navigating Slop
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Building an Agent for Engineers Who Use Them Every Day
LaunchInsights
Cosine: The Coding Agent for Engineers with Taste
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Why Polite AI Fails Professional Developers
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The Case for a Multi-Surface Agentic Ecosystem
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Unmaintainable AI Code is a Technical Liability
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Benchmarking Specialist Programming Languages: Early Results
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Multi-Agent Orchestration for Enterprise Coding Agents: What we shared at re:Invent 2025
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AI Risk Management for Software Engineering
Changelog
Cosine CLI 1.16 Update: Built-In Search
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Developer First Agents: Making AI Automation Safe and Manageable
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