{"slug": "ask-hn-when-do-you-choose-rag-over-fine-tuning", "title": "Ask HN: When do you choose RAG over Fine-Tuning?", "summary": "A Hacker News user, Harish_0089, asks the community when to choose retrieval-augmented generation (RAG) over fine-tuning for large language models, sparking a discussion on the trade-offs between the two approaches. The post, submitted 8 minutes ago, seeks practical guidance from developers and AI practitioners on selecting the appropriate method based on use case, data availability, and cost.", "body_md": "Hacker News\nnew\n|\npast\n|\ncomments\n|\nask\n|\nshow\n|\njobs\n|\nsubmit\nlogin\nAsk HN: When do you choose RAG over Fine-Tuning?\n1 point\nby\nHarish_0089\n8 minutes ago\n|\nhide\n|\npast\n|\nfavorite\n|\ndiscuss\nhelp\nConsider applying for YC's Fall 2026 batch!\nApplications\nare open till July 27.\nGuidelines\n|\nFAQ\n|\nLists\n|\nAPI\n|\nSecurity\n|\nLegal\n|\nApply to YC\n|\nContact\nSearch:", "url": "https://wpnews.pro/news/ask-hn-when-do-you-choose-rag-over-fine-tuning", "canonical_source": "https://news.ycombinator.com/item?id=49181196", "published_at": "2026-08-05 11:13:47+00:00", "updated_at": "2026-08-05 11:22:17.558931+00:00", "lang": "en", "topics": ["large-language-models", "ai-tools", "ai-research"], "entities": ["Hacker News", "Harish_0089", "Y Combinator"], "alternates": {"html": "https://wpnews.pro/news/ask-hn-when-do-you-choose-rag-over-fine-tuning", "markdown": "https://wpnews.pro/news/ask-hn-when-do-you-choose-rag-over-fine-tuning.md", "text": "https://wpnews.pro/news/ask-hn-when-do-you-choose-rag-over-fine-tuning.txt", "jsonld": "https://wpnews.pro/news/ask-hn-when-do-you-choose-rag-over-fine-tuning.jsonld"}}