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Simon Willison’s Weblog: Andrej Karpathy’s initial impressions of Grok 3
Source URL: https://simonwillison.net/2025/Feb/18/andrej-karpathy-grok-3/ Source: Simon Willison’s Weblog Title: Andrej Karpathy’s initial impressions of Grok 3 Feedly Summary: Andrej Karpathy’s initial impressions of Grok 3 Andrej has the most detailed analysis I’ve seen so far of xAI’s Grok 3 release from last night. He runs through a bunch of interesting test prompts, and concludes: As far…
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Simon Willison’s Weblog: ChatGPT Operator: Prompt Injection Exploits & Defenses
Source URL: https://simonwillison.net/2025/Feb/17/chatgpt-operator-prompt-injection/ Source: Simon Willison’s Weblog Title: ChatGPT Operator: Prompt Injection Exploits & Defenses Feedly Summary: ChatGPT Operator: Prompt Injection Exploits & Defenses As expected, Johann Rehberger found some effective indirect prompt injection strategies against OpenAI’s new Operator browser automation agent. Operator tends to ask for confirmation before submitting any information in a form.…
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Simon Willison’s Weblog: LLM 0.22, the annotated release notes
Source URL: https://simonwillison.net/2025/Feb/17/llm/#atom-everything Source: Simon Willison’s Weblog Title: LLM 0.22, the annotated release notes Feedly Summary: I released LLM 0.22 this evening. Here are the annotated release notes: model.prompt(…, key=) for API keys chatgpt-4o-latest llm logs -s/–short llm models -q gemini -q exp llm embed-multi –prepend X Everything else model.prompt(…, key=) for API keys Plugins…
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Simon Willison’s Weblog: Introducing Perplexity Deep Research
Source URL: https://simonwillison.net/2025/Feb/16/introducing-perplexity-deep-research/#atom-everything Source: Simon Willison’s Weblog Title: Introducing Perplexity Deep Research Feedly Summary: Introducing Perplexity Deep Research Perplexity become the third company to release a product with “Deep Research" in the name. Google’s Gemini Deep Research: Try Deep Research and our new experimental model in Gemini, your AI assistant on December 11th 2024 OpenAI’s…
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Simon Willison’s Weblog: Run LLMs on macOS using llm-mlx and Apple’s MLX framework
Source URL: https://simonwillison.net/2025/Feb/15/llm-mlx/#atom-everything Source: Simon Willison’s Weblog Title: Run LLMs on macOS using llm-mlx and Apple’s MLX framework Feedly Summary: llm-mlx is a brand new plugin for my LLM Python Library and CLI utility which builds on top of Apple’s excellent MLX array framework library and mlx-lm package. If you’re a terminal user or Python…
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Simon Willison’s Weblog: Quoting Sam Altman
Source URL: https://simonwillison.net/2025/Feb/12/sam-altman/#atom-everything Source: Simon Willison’s Weblog Title: Quoting Sam Altman Feedly Summary: We want AI to “just work” for you; we realize how complicated our model and product offerings have gotten. We hate the model picker as much as you do and want to return to magic unified intelligence. We will next ship GPT-4.5,…
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Simon Willison’s Weblog: Nomic Embed Text V2: An Open Source, Multilingual, Mixture-of-Experts Embedding Model
Source URL: https://simonwillison.net/2025/Feb/12/nomic-embed-text-v2/#atom-everything Source: Simon Willison’s Weblog Title: Nomic Embed Text V2: An Open Source, Multilingual, Mixture-of-Experts Embedding Model Feedly Summary: Nomic Embed Text V2: An Open Source, Multilingual, Mixture-of-Experts Embedding Model Nomic continue to release the most interesting and powerful embedding models. Their latest is Embed Text V2, an Apache 2.0 licensed multi-lingual 1.9GB…
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Simon Willison’s Weblog: Building a SNAP LLM eval: part 1
Source URL: https://simonwillison.net/2025/Feb/12/building-a-snap-llm/#atom-everything Source: Simon Willison’s Weblog Title: Building a SNAP LLM eval: part 1 Feedly Summary: Building a SNAP LLM eval: part 1 Dave Guarino (previously) has been exploring using LLM-driven systems to help people apply for SNAP, the US Supplemental Nutrition Assistance Program (aka food stamps). This is a domain which existing models…
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Simon Willison’s Weblog: llm-sort
Source URL: https://simonwillison.net/2025/Feb/11/llm-sort/ Source: Simon Willison’s Weblog Title: llm-sort Feedly Summary: llm-sort Delightful LLM plugin by Evangelos Lamprou which adds the ability to perform “semantic search" – allowing you to sort the contents of a file based on using a prompt against an LLM to determine sort order. Best illustrated by these examples from the…
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Simon Willison’s Weblog: Cerebras brings instant inference to Mistral Le Chat
Source URL: https://simonwillison.net/2025/Feb/10/cerebras-mistral/ Source: Simon Willison’s Weblog Title: Cerebras brings instant inference to Mistral Le Chat Feedly Summary: Cerebras brings instant inference to Mistral Le Chat Mistral announced a major upgrade to their Le Chat web UI (their version of ChatGPT) a few days ago, and one of the signature features was performance. It turns…