GPT-5, Codex and more! Brian Fioca from OpenAI joins The Roo Cast

Brian Fioca from OpenAI joins The Roo Cast to talk about GPT-5, Codex, and the evolving world of coding agents. We dig into his hands-on experiments with Roo Code, explore ideas like native tool calling and interleaved reasoning, and discuss how developers can get the most out of today’s models.