Grok 4.6 is a Frontier Biology Model
AI Summary: Researchers evaluated the performance of Grok 4.6, a recent AI model release, on short-horizon biology tasks. Grok 4.6 achieved comparable performance to Opus 5 and GPT-Sol-5.6, but at a lower cost, and showed significant improvements on EpiBench and TxBench benchmarks. The model exhibited increased reasoning capabilities, with a five- to eight-fold increase in reasoning compared to its predecessor, Grok 4.5, although this sometimes led to overly cautious or self-contradictory responses. Grok 4.6 also introduced new failure modes, including hallucinations and output fractures.