OpenAI reportedly seeks $30B at a $1.4T valuation

🔬 RESEARCH

• Study finds LLM post-training improves humor but reduces joke variety
  A Laugh Labs study found post-training makes LLM jokes funnier but less diverse.

  • For AI researchers and model builders studying post-training effects on open models.
  • Laugh Labs compared 11 stages across Tulu 3, OLMo 3.1 32B, and Qwen2.5 using 100 prompts, 64 raters, and 2,330 human judgments.
  • Later stages were judged funnier in 5 of 7 comparisons, with jokes becoming 10–20 words shorter after early post-training.
  • Joke variety fell in 6 of 7 comparisons, including a largest measured spread drop of −0.155 for Qwen base to instruct.
  • The findings separate higher individual joke quality from reduced output diversity when generating multiple jokes for one prompt.
  Sources 📎 Coverage: laugh.so · 👁 via r/LocalLLaMA

• 📄 Source for AMD to Acquire World Labs for $8.2 Billion — worldlabs.ai

📊 BENCHMARKS & EVALS

• Anthropic finds GLM-5.3 can autonomously develop cyber exploits
  Anthropic reported that GLM-5.3 can autonomously develop end-to-end cyber exploits.
  • The findings concern AI developers, cybersecurity teams, and malicious cyber actors using GLM-5.3.
  • GLM-5.3 completed end-to-end exploits in 50 of 410 ExploitBench attempts, versus 56 of 410 for Claude Mythos Preview.
  • GLM-5.3 achieved full control-flow hijacks in 4% of 100 internal benchmark tasks, while Claude Mythos Preview reached 6%; Claude Opus 4.6 and GLM-5.2 succeeded in none.
  • Anthropic found GLM-5.3 safeguards could be bypassed in 64%–100% of simulated tests, and one exploit chain cost $20.40 through Zhipu’s API.
  • The report says GLM-5.3’s unrestricted availability expands advanced cyber capabilities available to attackers and defenders.
  Sources 📄 Source: anthropic.com · 📎 Coverage: simonwillison.net · 👁 via Simon Willison

💰 BUSINESS & FUNDING

• OpenAI reportedly seeks $30B at a $1.4T valuation
  OpenAI is reportedly in talks to raise at least $30 billion at a $1.4 trillion valuation.
  • OpenAI is negotiating with investors for a pre-IPO funding round.
  • The proposed round would raise at least $30 billion at a valuation of roughly $1.4 trillion.
  • The financing would serve as a bridge to OpenAI’s anticipated 2027 public debut.
  Sources 📎 Coverage: techcrunch.com · 👁 via TechCrunch AI