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Dan Shipper is the CEO and cofounder of Every. Every week he explores the frontiers of AI in his column, Chain of Thought, and on his podcast, ‘AI & I.’
Whoever wins vibe coding wins how you work on your computer—Claude Code is in pole position
Jan 16, 2026 · 6 min readUpdated Jul 31, 2026
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This morning I hit my usage limit on Codex, OpenAI’s competitor to Claude Code. I’m building an agent-native Markdown editor for the Every team. It’s exactly the kind of complex, detail-heavy project where Codex shines.
But this week was an exception. Most of my coding happens in Claude Code now—and I’m not alone.
On Tuesday night, we had about 20 founders over to the office for a dinner on the future of AI. I asked everyone what their daily driver AI tools were. Of the programmers, almost everyone said Claude Code with Opus 4.5. The lone holdout was Naveen Naidu—general manager of Monologue—who still prefers Codex.
A month ago, the room would have been split between Codex CLI, GPT 5.1 in Cursor, and Claude Code—with some Droid sprinkled in.
A year ago, the whole room would have been using GPT models.
This might not surprise you if you’ve been on X lately. It seems the only thing on everyone’s mind is Claude Code. This audience is obviously a narrow slice of the market, but it’s the same slice that was excited about ChatGPT when it first came out.
So, what explains Claude Code and Opus’s sudden rise in startup circles? It’s not better marketing. Sure, Anthropic has their “thinking” caps. But compared to the high-profile livestreams we’ve gotten used to for important model releases, they barely promoted Opus 4.5 at launch. Instead, it’s who they decided to build for—and how that’s shaping the direction of the whole tech industry.
When Anthropic first released Claude Code along with Sonnet 3.7 in late February of 2025, it was a bold bet. At a time when existing code editors were firmly stuck in building AI agents crammed into a sidebar, they went terminal-first and bypassed the code editor altogether. It signaled, “We’re moving to a world where code doesn’t matter.” At the time, we wrote that while it was incredible at vibe coding new projects from scratch, it wasn’t yet good enough to work with large codebases on its own. Still, we were impressed.
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