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AI 2 min read

xAI Launches Grok 4.5: Ultra-Affordable Cost Challenges GPT-5.5 and Fable 5

xAI's Grok 4.5 model achieves superior cost optimization at just $2 per million tokens, creating a significant competitive advantage even with lower coding benchmark scores compared to its rivals.

Tier 1 · sources 64% confidence Reviewed
Sources the-decoder.com

Billionaire Elon Musk's artificial intelligence company xAI has officially released its latest large language model, Grok 4.5. The most striking aspect of this launch isn't its performance topping leaderboards, but its ultra-low price of just $2 per million input tokens, igniting a new price war in the next-generation commercial AI model segment.

Detailed Developments

According to a report from The Decoder, Grok 4.5 was successfully trained on a supercomputer system equipped with tens of thousands of next-generation Nvidia GB300 graphics chips. Immediately after completing the training process, xAI decided to commercialize this model at an extremely competitive price to attract developers. It is anticipated that users and businesses in the European Union (EU) will be able to directly access and experience Grok 4.5 around mid-July 2026.

Technical Analysis & Technology

From a technical performance standpoint, Grok 4.5 demonstrates incredible optimization in language processing and system resource utilization. Although Grok 4.5's test results in coding benchmarks still rank behind two formidable rivals, Fable 5 and GPT-5.5, xAI's model boasts another impressive technical specification. Specifically, Grok 4.5 requires up to 4.2 times fewer tokens than its competitor Opus 4.8 to complete the same processing task, which helps increase response speed and save data transmission bandwidth.

Expert Opinions & Commentary

Many technology analysts believe that xAI's pricing strategy could reshape how the market evaluates AI models. At a cost of just $2 per million input tokens, Grok 4.5 is significantly cheaper than its peers in the same segment. The small gap in coding benchmark scores may now be less critical for businesses when they consider the operational cost challenge of running AI systems at scale, handling millions of queries daily.

Impact & Future

The emergence of Grok 4.5 with its disruptive pricing will put pressure on OpenAI and Anthropic to optimize the cost structure for their GPT-5.5 models or the upcoming Opus series. For the technology community and Vietnamese startups, access to a powerful AI model with extremely low costs like Grok 4.5 opens up significant opportunities to build intelligent applications without concerns about budget constraints.