CoolDeep AI Digest

The article explains how the release of Claude 4.8 changed the way users must craft prompts, shifting from a model that inferred intent to one that follows instructions literally. The author recounts a personal experience of typing a vague prompt and receiving an unsatisfactory output, noting that this habit worked with earlier versions but fails with Claude 4.8. Anthropic’s 31‑page prompting guide was distilled into ten practical rules that address this new behavior. Rule 1 advises naming the desired output explicitly rather than describing the task, ensuring structure such as tables or bullet points. Rule 2 recommends capping response length to prevent the model from deciding how much to write. Rule 3 suggests turning negative constraints into positive directives, as the model responds better to affirmative instructions. Rule 4 urges using action‑oriented verbs that each produce a concrete step, turning vague requests into executable chains. Rule 5 highlights the need to explicitly invoke web search, because Claude 4.8 uses fewer tool calls than its predecessor; users must push it to verify claims with multiple sources. Rule 6 recommends feeding the model samples of one’s own voice to emulate tone, especially since the new version is more direct and less emotive. Rule 7 encourages adding the phrase "Go beyond the basics" to creative tasks to elicit richer output. Rule 8 reveals that reasoning is not automatic; appending "Think before answering (maximum reasoning)" triggers a free quality boost. Rule 9 advises converting frequently used prompts into reusable skills to save effort. Finally, Rule 10 ties everything together: because Claude 4.8 does exactly what is typed, users must spell out every detail—output format, length, tone, order, and any required actions. The article concludes that mastering these rules transforms prompting from guesswork into precise engineering, yielding reliable, high‑quality results from Claude 4.8.