See what actually fits after prior messages and answer space. If it’s too large, turn it into safe, paste-ready parts in one click.
The 200K context trap
Claude Haiku 4.5
Actual room for new material
150
Example needs
≈161
PasteBudget catches the 11-token overflow.
Then it makes 2 safe parts without up the text.
Check the whole request
Find out if it fits. Fix it if it doesn’t. #
Paste the real prompt, account for the conversation already used, and protect enough room for a useful answer.
The method
One useful verdict, with the caveats visible. #
A raw context-window number is not your real input budget. PasteBudget subtracts the space you need for an answer and anything already in the conversation before deciding whether new material fits.
Current references
Model limits with receipts. #
Presets are sourced from provider documentation. Limits can change, so every row links back to the current source.
Practical guides
Use the limit well, not just fully. #
Good to know
Plain answers. #
PasteBudget is designed to be conservative about both context and privacy.