Codex VS Claude Code for GTM: Who Wins?

Two agentic coding tools launched within two months of each other last year.

Both run locally in your terminal. Both support MCP servers and maintain persistent project context. The difference:

OpenAI’s Codex CLI is open-source under Apache-2.0.

Claude Code is not. At the foundation layer, they are otherwise functionally similar.

But here is where it gets interesting for B2B founders: Your GTM motion defines which one you pick.

The short version: Codex builds your product. Claude Code sells it.

Let’s dive in.