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Estimated Tokens · GPT-5.4
0
Flagship reasoning & multi-modality
Input Cost
$0.00
$2.5 per 1M tokens
Output Cost
$0.00
$15 per 1M tokens
AI APIs charge per token, not per word. A token is roughly ¾ of a word. Long prompts and system instructions eat into your budget fast. Check counts before sending to optimize costs — especially for premium models like GPT-5.4 and Claude 4.6 Opus.
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