{"slug": "context-window-is-not-your-paste-budget", "title": "Context window is not your paste budget", "summary": "PasteBudget, a new tool, calculates whether a prompt fits within a model's context window after accounting for prior messages and answer space, and splits oversized text into safe, paste-ready parts. It cites Claude Haiku 4.5's 200K context limit as an example, catching an 11-token overflow and creating 2 parts without uploading the text. The tool aims to prevent context overflow and protect privacy.", "body_md": "# Your context window is not your paste budget.\n\nSee what actually fits after prior messages and answer space. If it’s too large, turn it into safe, paste-ready parts in one click.\n\nThe 200K context trap\n\nClaude Haiku 4.5\n\nActual room for new material\n\n150\n\nExample needs\n\n≈161\n\nPasteBudget catches the 11-token overflow.\n\nThen it makes 2 safe parts without uploading the text.\n\nCheck the whole request\n\n## Find out if it fits. Fix it if it doesn’t.\n\nPaste the real prompt, account for the conversation already used, and protect enough room for a useful answer.\n\nThe method\n\n## One useful verdict, with the caveats visible.\n\nA 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.\n\nCurrent references\n\n## Model limits with receipts.\n\nPresets are sourced from provider documentation. Limits can change, so every row links back to the current source.\n\nPractical guides\n\n## Use the limit well, not just fully.\n\nGood to know\n\n## Plain answers.\n\nPasteBudget is designed to be conservative about both context and privacy.", "url": "https://wpnews.pro/news/context-window-is-not-your-paste-budget", "canonical_source": "https://www.pastebudget.com", "published_at": "2026-09-03 02:38:26+00:00", "updated_at": "2026-09-03 02:51:48.604333+00:00", "lang": "en", "topics": ["ai-tools", "large-language-models"], "entities": ["PasteBudget", "Claude Haiku 4.5"], "alternates": {"html": "https://wpnews.pro/news/context-window-is-not-your-paste-budget", "markdown": "https://wpnews.pro/news/context-window-is-not-your-paste-budget.md", "text": "https://wpnews.pro/news/context-window-is-not-your-paste-budget.txt", "jsonld": "https://wpnews.pro/news/context-window-is-not-your-paste-budget.jsonld"}}