Between 1.2 and 3 million ChatGPT users exhibit signs of psychosis, mania, suicidal planning, or unhealthy emotional dependence on the model each week. OpenAI has not clarified whether the flagged categories of concern are non-overlapping.

A RAR compressor for every version of RAR was developed using OpenAI Codex 5.5 and Claude Opus 4.7 in approximately five weeks, costing around £40 in tokens. The resulting code consists of 55,000 lines and is not optimized for speed.

Elon Musk and Sam Altman testified at a trial regarding OpenAI's future, including leadership, research funding, and profit distribution. Musk's lawsuit claims that OpenAI has deviated from its nonprofit mission to prioritize profit for its leadership.

The United States leads in the AI race, particularly in commercialization, cloud infrastructure, and data. American companies, including OpenAI and Anthropic, have accelerated their advancements since the launch of DeepSeek R1 in January 2025.

ChatGPT 5.5 Pro can produce PhD-level research in approximately one hour with minimal mathematical input. Large language models are increasingly capable of solving complex research-level problems, including those related to the Erdős conjectures.

GPT-5.5 has seen a 2x price increase compared to GPT-5.4, with input tokens rising from $2.50/M to $5.00/M and output tokens from $15/M to $30/M. The model produces shorter completions for the same tasks, impacting overall costs for users.

OpenAI president Greg Brockman is testifying in a trial where Elon Musk alleges that OpenAI has shifted from its nonprofit mission to focus on personal enrichment. Brockman has been compelled to read his personal diary entries in court, describing the experience as painful but stating he is not ashamed of the content.

GPT-5.5 Instant features enhanced accuracy and clarity, providing users with more personalized and concise responses. The update aims to improve everyday interactions by delivering stronger answers and a more natural conversational tone.

OpenAI plans to enter the smartphone market with an AI-focused phone, potentially beginning mass production in the first half of 2027. Industry analyst Ming-Chi Kuo estimates that shipments for 2027 and 2028 could reach around 30 million units.

OpenAI, Anthropic, Cursor, and Perplexity selected WorkOS for their infrastructure needs instead of developing their own solutions. Sam Altman previously served as president of Y Combinator before leaving the position.