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