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C4: Container, Code, Cloud & Context
Designing intelligent systems, one layer at a time. ~ Nithin Mohan T K
GPT-6 Astra, Sol and Luna are all in Codex and differ in price by a factor of a hundred. What has been published about them, what an agent session costs under the new caching and long-context rules, and what Codex CLI actually sends when each kind of work is given its own model.
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What OpenAI, Microsoft and GitHub have published about GPT-5.2-Codex, with sources, and what the 400,000-token window means in practice: how much code fits, what a session costs, and how prompt order decides whether caching applies.
Read more →🎓 AUTHORITY NOTE Based on 20+ years using every major IDE from Visual Studio .NET 2003 to today’s AI-powered tools. This represents hands-on experience leading teams through multiple IDE migrations and tool standardizations. Executive Summary Remember when developers would argue passionately about whether Visual Studio, VS Code, JetBrains, or Vim was the “right” choice? Those […]
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