Teams use Codex with GPT-5. 5 to ship production systems and turn research ideas into runnable experiments.
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How engineers at Nextdoor use Codex with GPT-5. 5 to investigate hard-to-reproduce issues, build across platforms, and focus on product outcomes.
GPT-5. 3-Codex is a Codex-native agent that pairs frontier coding performance with general reasoning to support long-horizon, real-world technical work.
Introducing GPT-5. 1-Codex-Max, a faster, more intelligent agentic coding model for Codex.
Codex just got faster, more reliable, and better at real-time collaboration and tackling tasks independently anywhere you develop—whether via the terminal, IDE, web, or even your phone.
How Braintrust engineers use Codex with GPT-5. 5 to run experiments and code faster.
GPT‑5. 3-Codex is the most capable agentic coding model to date, combining the frontier coding performance of GPT‑5.