Gemini 3.1 Pro tops Arena at 77.1% ARC

Gemini 3.1 Pro is a category-killer update that moves Google from a follower to a frontrunner in reasoning-heavy LLMs. The ARC-AGI-2 score jump from 31% to 77.1% proves a fundamental architectural shift toward agentic reasoning, supported by internal multi-step logic via Deep Think integration. A 38% reduction in hallucinations addresses production RAG needs while the 1M token context window remains the gold standard for long-context retrieval.