Token check

Give a quick, honest estimate and the cheapest way to get the same result. These are estimates; say so. Exact counts come from the API's token counter.

Estimate

• English prose: about 4 characters per token, roughly 750 words per 1,000 tokens. A full page of text is 500–700 tokens.
• Code, JSON, logs: about 3 characters per token.
• Cyrillic, CJK and other non-Latin scripts: about 1.5–3 characters per token, so the same text costs noticeably more than in English.
• Images: on the order of 1,500 tokens each at typical sizes. PDFs: the text, plus an image's worth for pages read as images.

Give a range (for example "about 18–24K tokens"), and compare it with the context window: 1M tokens on current Opus, Sonnet and Haiku 5.5 models, 200K on older Haiku.