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Context Window Checker

Paste a document, see which models can hold it, and know how much room remains.

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21,516Characters2,998Words113Lines5,379Tokens
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Context windows in practical terms

Context≈ Words≈ Pages
32K tokensVerified against official docs · Oct 202624,00048
128K tokensVerified against official docs · Oct 202696,000190
200K tokensVerified against official docs · Oct 2026150,000300
1M tokensVerified against official docs · Oct 2026750,0001,500
1.05M tokensVerified against official docs · Oct 2026789,0001,578
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Roughly 1,500 pages of typical English prose fit in a 1M-token window, though formatting and vocabulary affect the exact total.

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