xAI just revealed it's cost-efficient intelligent reasoning model.
Grok 4 Fast
- Achieves comparable results to Grok 4, despite using 40% fewer thinking tokens on average, resulting in a 98% price reduction.
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Benchmarks place it above Claude 4.1 Opus and Gemini 2.5 Pro, hitting 85.7% on GPQA Diamond (science) and 92% on AIME 2025 (math).
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The model also rose to No. 1 in LMArena's Search Arena, and showed strong performance on coding benchmarks - even surpassing the larger Grok 4.
- Supports a 2M token context, along with native tool integration for web browsing and code execution.
source: The Rundown AI
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Todor Kostov
Director
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