References have already been made to “gpt-5-reasoning-alpha-2025-07-13” . The code for the model configuration is “reasoning_effort: high” . These sightings indicate that the model is in the final testing phase, with testers gaining access to the code and security specialists performing red teaming on it to test vulnerabilities. Unifying OpenAI’s model lineup
The new model represents OpenAI’s attempt to simplify their increasingly complex product line. Altman explained that GPT-5 could integrate features from the company’s conventional GPT and reasoning-focused O-series models in a single system. OpenAI’s Head for Developer Experience Romain Huite said during a recent event. According to The Information, GPT-5 will be more powerful and better at coding, combining the attributes of both traditional models as well as SR models like o3.
OpenAI plans to release their first open-weights AI model since GPT-2 by 2019, so that anyone with the right hardware can download and run it on their own machine. The Verge describes the model as “similar to o3 mini” that has reasoning capabilities. Altmanannounced on July 11th that the open model requires additional safety testing.
