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 Meetup: https://www.meetup.com/code-coffee-philly/ LinkedIn: https://www.linkedin.com/company/code-coffee-philadelphia Instagram: https://www.instagram.com/coffeecodephilly Discord: https://discord.gg/2ad8NmvC2 Linktree: https://linktr.ee/codecoffeephilly Substack: https://substack.com/@codecoffeephilly