new Gemini 3 Deep Think, Anthropic $30B @ $380B, GPT-5.3-Codex Spark, MiniMax M2.5

**Google DeepMind** is rolling out the upgraded **Gemini 3 Deep Think V2** reasoning mode to **Google AI Ultra** subscribers and opening early access to the **Vertex AI / Gemini API** for select users. Key benchmark achievements include **ARC-AGI-2 at 84.6%**, **Humanity’s Last Exam (HLE) at 48.4% without tools**, and a **Codeforces Elo of 3455**, showcasing Olympiad-level performance in physics and chemistry. The mode emphasizes practical scientific and engineering applications such as error detection in math papers, physical system modeling, semiconductor optimization, and a **sketch to CAD/STL pipeline** for 3D printing. ARC benchmark creator François Chollet highlights the benchmark's role in advancing test-time adaptation and fluid intelligence, projecting human-AI parity around **2030**. This rollout is framed as a productized, compute-heavy test-time mode rather than a lab demo, with cost disclosures for ARC tasks provided.