xAI launches Grok 4 Fast, a cheaper alternative to Grok 4
Elon Musk's xAI has launched Grok 4 Fast, a cheaper AI model handling reasoning and non-reasoning tasks together. It uses 40% fewer tokens while keeping accuracy and supports a 2 million token context window. Scoring high on benchmarks, it costs $0.20 per million input tokens. It offers up to 98% savings over Grok 4.