Grok 4.7, SpaceXSI’s current flagship Grok model, has a context window of 500,000 tokens, according to the official Grok 4.7 model page in the SpaceXSI developer docs.
As of November 9, 2026, the model page lists grok-4.7 with text and image input, text output, and API prices of $2.00 per million input tokens, $0.50 per million cached input tokens and $6.00 per million output tokens. SpaceXSI notes that requests exceeding 200K tokens of context are charged at different, higher rates, so very long prompts cost more per token. Older figures for Grok 4, 4.5 and 4.6 that still appear in search results do not apply to Grok 4.7.
For the Grok app on grok.com and mobile, SpaceXSI does not publish a per-plan context window. Its Grok FAQ says uploads can be up to 150 MB per file and that very long files may be summarized or handled in sections.
Related: Grok API pricing: how much does the Grok API cost?, Grok usage limits: how much can you use on each plan? and What is the Claude context window?
Source: SpaceXSI Docs, Grok 4.7 model page; SpaceXSI Docs, Grok FAQ
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