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