{"slug": "generated-code-with-gpt-6-sol", "title": "Generated Code with GPT-6-Sol", "summary": "GPT-6-Sol generated correct Rust code from two Markdown specifications in under a minute for about $0.07, according to a developer's first-person account of spec-driven development. The same two code generations took the author's local model roughly an hour at 100% GPU usage and an estimated $0.05 in electricity, while GPT-6-Luna failed to produce correct Rust code. The author reported promising results generating optimized code from specs, with weaker local models reserved for maintaining glue code.", "body_md": "I have recently been trying to replace some **Rust functions** with **specifications** written in Markdown. Then I can just use an LLM to generate the function according to the specification. I used a local model to generate the code correctly, but I decided to try some online models.\n\nAt first I tried **GPT-6-Luna**. It did not manage to generate correct Rust code. I then tried **GPT-6-Sol**, and it worked well—it took GPT-6-Sol less than a minute to generate the code for the 2 specs, while my local model took around an hour.\n\nGPT-6-Sol **cost** me about $0.07 (7 cents) for the 2 code generations I did. Meanwhile, my local model, which ran for about 60 minutes at 100% GPU usage, likely cost me as much as $0.05 in **electricity** (5 cents). So I did not save much money by using a slower, weaker model at home.\n\nI had GPT-6-Sol generate more **optimized code** as well, so the task was a success. Getting used to **spec-driven development** will take some time, but I have had promising results so far—it seems like a big, powerful model can generate code from these specs, while a weaker, local model could be used for maintaining glue code in the rest of the program.", "url": "https://wpnews.pro/news/generated-code-with-gpt-6-sol", "canonical_source": "https://www.dotnetperls.com/2026_9_23_generated-code-gpt-6-sol", "published_at": "2026-09-23 07:00:00+00:00", "updated_at": "2026-09-23 15:28:02.885450+00:00", "lang": "en", "topics": ["large-language-models", "generative-ai", "ai-tools", "developer-tools"], "entities": ["GPT-6-Sol", "GPT-6-Luna", "Rust"], "alternates": {"html": "https://wpnews.pro/news/generated-code-with-gpt-6-sol", "markdown": "https://wpnews.pro/news/generated-code-with-gpt-6-sol.md", "text": "https://wpnews.pro/news/generated-code-with-gpt-6-sol.txt", "jsonld": "https://wpnews.pro/news/generated-code-with-gpt-6-sol.jsonld"}}