Anthropic unveils recursive AI self-improvement, NVIDIA Nemotron 3 Ultra open-source, Suno raises $400M
June 4, 2026: Anthropic publishes internal data on recursive self-improvement (>80% of code by Claude). NVIDIA ships Nemotron 3 Ultra 550B open-source. OpenAI rolls out Dreaming v3 for ChatGPT. GitHub Copilot moves to 1M tokens of context. Suno raises $400M at a $5.4 billion valuation.