After the release of Grok 4 just a few months back, xAI is already trying to move on with its latest AI model. Elon Musk's xAI announced the release of Grok 4 Fast, a faster, more efficient reasoning model compared to its recent predecessor. Grok 4 Fast, according to xAI, offers similar performance to Grok 4 while using 40 percent fewer thinking tokens on average. Along with faster results, Grok 4 Fast "results in a 98% reduction in price to achieve the same performance on frontier benchmarks as Grok 4".
Similar to OpenAI's GPT-5 that alternates between a smart, efficient model and a deeper reasoning model, xAI's latest update includes a unified architecture that can transition between handling complex requests with its "reasoning" model and quick responses through its "non-reasoning model."
While testing on LMArena, a platform that pits AI models against each other and provides side-by-side comparisons, Grok 4 Fast ranks first in search-related tasks and eighth in text-related tasks. xAI made Grok 4 Fast available for all users, including the free ones, on web, iOS and Android.
However, with how competitive the LLM race is getting, it's only a matter of time before Google releases the next-gen version of Gemini or Anthropic updates the Claude Opus model beyond the recently released 4.1 version.
See What’s Next in Tech With the Fast Forward Newsletter
Tweets From @varindiamag
Nothing to see here - yet
When they Tweet, their Tweets will show up here.
