Digging into Claude Code and codex source codes to understand how they work
Comparing the architectures of Codex CLI and Claude Code.
Opening excerpt (first ~120 words) tap to expand
All Writings The Annotated Coding Agent Comparing the architectures of Codex CLI and Claude Code. astro-island,astro-slot,astro-static-slot{display:contents}(()=>{var e=async t=>{await(await t())()};(self.Astro||(self.Astro={})).load=e;window.dispatchEvent(new Event("astro:load"));})();(()=>{var A=Object.defineProperty;var g=(i,o,a)=>o in i?A(i,o,{enumerable:!0,configurable:!0,writable:!0,value:a}):i[o]=a;var d=(i,o,a)=>g(i,typeof o!="symbol"?o+"":o,a);{let i={0:t=>m(t),1:t=>a(t),2:t=>new RegExp(t),3:t=>new Date(t),4:t=>new Map(a(t)),5:t=>new Set(a(t)),6:t=>BigInt(t),7:t=>new URL(t),8:t=>new Uint8Array(t),9:t=>new Uint16Array(t),10:t=>new Uint32Array(t),11:t=>Number.POSITIVE_INFINITY*t},o=t=>{let[l,e]=t;return l in i?i[l](e):void 0},a=t=>t.map(o),m=t=>typeof…
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