xAI Launches Grok4Fast with 40% Efficiency Improvement, Performance Competes with Grok4!
xAI has launched Grok4Fast, a lightweight flagship model that, according to the company, offers performance comparable to Grok4 but with 40% less computational demand. According to AIbase, this significant efficiency improvement can reduce the cost of each task by up to 98%. Grok4Fast demonstrates excellent performance across multiple benchmark tests, such as scoring 85.7% on GPQA Diamond and 92.0% on AIME2025.
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