Claude Code vs. Codex: Loops, Graphs, and Harnesses

Claude Code vs. Codex: Loops, Graphs, and Harnesses

This is a casual pair-programming meetup for developers experimenting with Claude Code, Codex, and agentic coding workflows. There is no formal presentation and no fixed curriculum. Bring a laptop, a repository, a side project, or a workflow you want to test. We will work in small groups, compare approaches, debug problems, and share what is working.

Possible areas to explore include:

• Building iterative coding-agent loops • Comparing Claude Code and Codex on the same task • Designing graph-based agent workflows • Creating reusable coding harnesses • Managing context across large repositories • Running tests and validating agent-generated changes • Using sandboxes, permissions, and approval steps • Coordinating subagents or parallel tasks • Measuring latency, token usage, cost, and completion quality • Debugging failed or incomplete agent runs

You do not need to be an expert in either tool. This meetup is for people who want hands-on time to experiment, pair with other developers, and learn through building. Bring something you are working on, or join someone else’s project. Hosted by Coffee & Code Philadelphia.

Coffee & Code Philadelphia Website: [https://www.codephilly.com](https://www.codephilly.com/) Meetup: [https://www.meetup.com/code-coffee-philly/](https://www.meetup.com/code-coffee-philly/) LinkedIn: [https://www.linkedin.com/company/code-coffee-philadelphia](https://www.linkedin.com/company/code-coffee-philadelphia) Instagram: [https://www.instagram.com/coffeecodephilly](https://www.instagram.com/coffeecodephilly) Discord: [https://discord.gg/2ad8NmvC2](https://discord.gg/2ad8NmvC2) Linktree: [https://linktr.ee/codecoffeephilly](https://linktr.ee/codecoffeephilly) Substack: [https://substack.com/@codecoffeephilly](https://substack.com/@codecoffeephilly)