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Simon Willison’s Weblog: Quoting Steve Krouse
Source URL: https://simonwillison.net/2025/Jul/30/steve-krouse/ Source: Simon Willison’s Weblog Title: Quoting Steve Krouse Feedly Summary: When you vibe code, you are incurring tech debt as fast as the LLM can spit it out. Which is why vibe coding is perfect for prototypes and throwaway projects: It’s only legacy code if you have to maintain it! […] The worst…
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Simon Willison’s Weblog: The best available open weight LLMs now come from China
Source URL: https://simonwillison.net/2025/Jul/30/chinese-models/ Source: Simon Willison’s Weblog Title: The best available open weight LLMs now come from China Feedly Summary: Something that has become undeniable this month is that the best available open weight models now come from the Chinese AI labs. I continue to have a lot of love for Mistral, Gemma and Llama…
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Simon Willison’s Weblog: Qwen3-30B-A3B-Thinking-2507
Source URL: https://simonwillison.net/2025/Jul/30/qwen3-30b-a3b-thinking-2507/ Source: Simon Willison’s Weblog Title: Qwen3-30B-A3B-Thinking-2507 Feedly Summary: Qwen3-30B-A3B-Thinking-2507 Yesterday was Qwen3-30B-A3B-Instruct-2507. Qwen are clearly committed to their new split between reasoning and non-reasoning models (a reversal from Qwen 3 in April), because today they released the new reasoning partner to yesterday’s model: Qwen3-30B-A3B-Thinking-2507. I’m surprised at how poorly this reasoning mode…
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Simon Willison’s Weblog: OpenAI: Introducing study mode
Source URL: https://simonwillison.net/2025/Jul/29/openai-introducing-study-mode/#atom-everything Source: Simon Willison’s Weblog Title: OpenAI: Introducing study mode Feedly Summary: OpenAI: Introducing study mode New ChatGPT feature, which can be triggered by typing /study or by visiting chatgpt.com/studymode. OpenAI say: Under the hood, study mode is powered by custom system instructions we’ve written in collaboration with teachers, scientists, and pedagogy experts…
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Simon Willison’s Weblog: Qwen/Qwen3-30B-A3B-Instruct-2507
Source URL: https://simonwillison.net/2025/Jul/29/qwen3-30b-a3b-instruct-2507/ Source: Simon Willison’s Weblog Title: Qwen/Qwen3-30B-A3B-Instruct-2507 Feedly Summary: Qwen/Qwen3-30B-A3B-Instruct-2507 New model update from Qwen, improving on their previous Qwen3-30B-A3B release from late April. In their tweet they said: Smarter, faster, and local deployment-friendly. ✨ Key Enhancements: ✅ Enhanced reasoning, coding, and math skills ✅ Broader multilingual knowledge ✅ Improved long-context understanding (up…
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Simon Willison’s Weblog: My 2.5 year old laptop can write Space Invaders in JavaScript now
Source URL: https://simonwillison.net/2025/Jul/29/space-invaders/ Source: Simon Willison’s Weblog Title: My 2.5 year old laptop can write Space Invaders in JavaScript now Feedly Summary: I wrote about the new GLM-4.5 model family yesterday – new open weight (MIT licensed) models from Z.ai in China which their benchmarks claim score highly in coding even against models such as…
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Simon Willison’s Weblog: Quoting Anthropic
Source URL: https://simonwillison.net/2025/Jul/28/anthropic/ Source: Simon Willison’s Weblog Title: Quoting Anthropic Feedly Summary: We’re rolling out new weekly rate limits for Claude Pro and Max in late August. We estimate they’ll apply to less than 5% of subscribers based on current usage. […] Some of the biggest Claude Code fans are running it continuously in the…
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Simon Willison’s Weblog: GLM-4.5: Reasoning, Coding, and Agentic Abililties
Source URL: https://simonwillison.net/2025/Jul/28/glm-45/#atom-everything Source: Simon Willison’s Weblog Title: GLM-4.5: Reasoning, Coding, and Agentic Abililties Feedly Summary: GLM-4.5: Reasoning, Coding, and Agentic Abililties Another day, another significant new open weight model release from a Chinese frontier AI lab. This time it’s Z.ai – who rebranded (at least in English) from Zhipu AI a few months ago.…
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Simon Willison’s Weblog: Official statement from Tea on their data leak
Source URL: https://simonwillison.net/2025/Jul/26/official-statement-from-tea/#atom-everything Source: Simon Willison’s Weblog Title: Official statement from Tea on their data leak Feedly Summary: Official statement from Tea on their data leak Tea is a dating safety app for women that lets them share notes about potential dates. The other day it was subject to a truly egregious data leak caused…
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Simon Willison’s Weblog: Qwen3-235B-A22B-Thinking-2507
Source URL: https://simonwillison.net/2025/Jul/25/qwen3-235b-a22b-thinking-2507/#atom-everything Source: Simon Willison’s Weblog Title: Qwen3-235B-A22B-Thinking-2507 Feedly Summary: Qwen3-235B-A22B-Thinking-2507 The third Qwen model release week, following Qwen3-235B-A22B-Instruct-2507 on Monday 21st and Qwen3-Coder-480B-A35B-Instruct on Tuesday 22nd. Those two were both non-reasoning models – a change from the previous models in the Qwen 3 family which combined reasoning and non-reasoning in the same model,…