How Braintrust engineers use Codex with GPT-5. 5 to run experiments and code faster.
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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.
Teams use Codex with GPT-5. 5 to ship production systems and turn research ideas into runnable experiments.
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.
GPT-5. 2-Codex is OpenAI’s most advanced coding model, offering long-horizon reasoning, large-scale code transformations, and enhanced cybersecurity capabilities.
Introducing GPT-5. 1-Codex-Max, a faster, more intelligent agentic coding model for Codex.
How Ramp engineers use Codex with GPT-5. 5 to review code and ship improvements, allowing them to get substantive feedback in minutes instead of hours.