One token over the line reprices the whole request
Gemini 2.5 Pro: input $1.25 then $2.50 per million past 200,000 tokens, output $10 then $15. Bars to scale in tokens; the short block is a 4,000-token answer.
$1.25/M input
$2.50/M input
output
200,000 input tokens: the line
199,999 input tokens
below the line
$0.29
210,000 tokens
if only the excess were repriced
$0.315
This is how nobody bills it. Every vendor that documents the rule reprices every token of the request.
210,000 tokens
as actually billed
$0.585
The 10,001 extra tokens cost $0.295, or $29.50 per million: 11.8 times the above-line rate, because the 200,000 before them repriced too.
The same rule at 3x: on qwen3.7-plus a 255,029-token prompt bills $0.102 of input and a 257,332-token prompt $0.309. Sources: vendor pricing pages fetched 2026-09-01.