Overview

• References to “gpt-5-reasoning-alpha-2025-07-13” and active red-teaming indicate the model is in its final testing phase CEO Sam Altman has signaled an imminent rollout, posting on X that GPT-5 will arrive “soon” and noting its advanced reasoning capabilities
• GPT-5 will merge the multimodal strengths of the GPT series with the logical reasoning of the o-series into a single architecture
• Launch plans include mini and nano variants for API and ChatGPT users alongside an open-weight model resembling o3-mini before August
• The flagship model, expected in early August, will support context windows beyond one million tokens and leverage expanded server capacity from Microsoft