{"slug": "tokens-define-model-cost-and-context-limits", "title": "Tokens Define Model Cost and Context Limits", "summary": "Large language models process text as tokens, not words, a July 2026 TowardsAI explainer says, determining model cost, context-window limits, and prompt behavior. OpenAI's documentation notes English text runs about one token per four characters, with tokens including whole words, fragments, punctuation, numbers, or emojis. This means API billing and context budgets rely on token counts, and non-English or code-heavy text consumes tokens faster than plain English.", "body_md": "Large language models like **ChatGPT** process text as **tokens**, not words, a distinction a July 2026 **TowardsAI** explainer says determines model cost, context-window limits, and prompt behavior. According to **OpenAI**'s own token documentation, English text runs about one token per four characters, so a token can be a whole word, a word fragment, punctuation, a number, or an emoji. For practitioners, this means API billing and context-window budgets are set by token counts, not word counts, and non-English or code-heavy text can consume tokens far faster than plain English. The piece illustrates the idea with a LEGO-brick analogy, showing how a sentence like \"Machine learning is amazing.\" splits into reusable subword pieces so models can handle rare or unseen words without exploding vocabulary size.", "url": "https://wpnews.pro/news/tokens-define-model-cost-and-context-limits", "canonical_source": "https://letsdatascience.com/news/tokens-define-model-cost-and-context-limits-3d8d164e", "published_at": "2026-07-04 00:01:01+00:00", "updated_at": "2026-07-04 01:22:52.629936+00:00", "lang": "en", "topics": ["large-language-models", "ai-tools", "ai-infrastructure"], "entities": ["ChatGPT", "TowardsAI", "OpenAI"], "alternates": {"html": "https://wpnews.pro/news/tokens-define-model-cost-and-context-limits", "markdown": "https://wpnews.pro/news/tokens-define-model-cost-and-context-limits.md", "text": "https://wpnews.pro/news/tokens-define-model-cost-and-context-limits.txt", "jsonld": "https://wpnews.pro/news/tokens-define-model-cost-and-context-limits.jsonld"}}