2 articles
xAI's Grok 4.1 Fast now supports a 2 million-token context window—the largest among major AI models. This massive capacity lets users handle enormous inputs in one go, from lengthy conversations to entire codebases.
Grok 4.1 Fast jumped from 253B to 334B tokens in just 24 hours, marking its highest daily usage ever recorded on OpenRouter. The rapid spike pushed the model to the top of the platform's activity charts.
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Alex Dudov
Eseandre Mordi
