xAI has launched its latest AI model, Grok 4.3, which scores 53 on the Artificial Analysis Intelligence Index, surpassing competitors Muse Spark and Claude Sonnet 4.6. This marks a 4-point improvement over its predecessor, Grok 4.20. The new model also achieved an ELO score on the GDPval-AA benchmark, indicating enhanced performance. In addition to performance upgrades, Grok 4.3 offers significant cost reductions, with input pricing decreased by approximately 40% and output pricing by about 60% compared to Grok 4.20. These enhancements make Grok 4.3 a more efficient and cost-effective option for users.