Overview

• OpenAI re-enabled manual model selection for GPT-4o and raised reasoning request caps for ChatGPT-Plus users within 72 hours of GPT-5’s launch.
• University of Rhode Island researchers measured GPT-5’s per-response consumption at up to 40 Watt-hours for a 1,000-token reply, averaging 18 Wh, prompting demands for full environmental disclosures.
• Early tests by journalists and academics found that GPT-5, despite faster and more confident outputs, continues to hallucinate and offer concrete advice without sufficient qualifiers.
• Apple confirmed that GPT-5 will be available through its Apple Intelligence integration in iOS 26, iPadOS 26 and macOS 26, with system updates expected in mid-to-late September.
• Competitors including Google, Meta and Amazon are accelerating alternative model rollouts and talent recruitment as OpenAI adapts policies and addresses transparency and safety concerns.