Venture Beat

• ChatGPT users dismayed as OpenAI pulls popular models GPT-4o, o3 and more — enterprise API remains (for now)

  OpenAI has announced GPT-5 will replace all models on ChatGPT. Many users are mourning the workhorse model.

• Black Hat 2025: Why your AI tools are becoming the next insider threat

  Black Hat 2025 delivered performance metrics from beta programs and agentic AI deployments, proving results are being delivered over hype.

• OpenAI launches GPT-5, nano, mini and Pro — not AGI, but capable of generating ‘software-on-demand’

  With safer design, more robust reasoning, expanded developer tooling, and broad user access, GPT-5 reflects a maturing AI ecosystem.

• New ‘persona vectors’ from Anthropic let you decode and direct an LLM’s personality

  A new study from Anthropic introduces "persona vectors," a technique for developers to monitor, predict and control unwanted LLM behaviors.

• The initial reactions to OpenAI’s landmark open source gpt-oss models are highly varied and mixed

  The verdict, for now, is split. OpenAI’s gpt-oss models are a landmark in terms of licensing and accessibility.