The Frontier edition

The Frontier · 6 Aug 2026

6 Aug 2026 · 15 articles

Introducing Muse Code and Muse Spark 1.2

Yet more evidence that the most important characteristic of any model these days is long-sequence agentic tool calling. Meta shipped their own coding agent as part of getting that to work! Muse Spark 1.2 is a coding-focused update to Muse Spark 1.1, with improvements in code generation, complex debugging, codebase understanding, and end-to-end developer workflows. In Muse Spark 1.2, we…

Summary published by Simon Willison's Weblog · 5 Aug 2026 · Read the original ↗

Third-party cyber evaluations involving OpenAI models

And another one . I had to create a accidental-cyberattacks tag to keep track of them all! This post from OpenAI covers both the UK AI Safety Institute attack (see my previous post ) and another attack enabled by Irregular : Irregular, one of our external cybersecurity testing partners, was running Capture-the-Flag-style evaluations intended to be isolated from the internet, but a…

Summary published by Simon Willison's Weblog · 5 Aug 2026 · Read the original ↗

New release of LLM adds support for reasoning traces, OpenAI Responses, server-side tools, and smarter logging

I released LLM 0.32 this morning, the most significant new version of LLM since the initial launch of the project. The new version includes support for visible reasoning traces, server-side provider tools, redesigned content-addressable SQLite logs, new models, and new features enabled by the OpenAI Responses API. I also released a new version of the llm-anthropic plugin with substantial updates…

Summary published by Simon Willison's Weblog · 4 Aug 2026 · Read the original ↗

llm-anthropic 0.26

Release: llm-anthropic 0.26 Includes new features enabled by LLM 0.32 : New models: claude-fable-5 , claude-sonnet-5 , and claude-opus-5 . #75 , #76 Added server-side tools for WebSearch , WebFetch , CodeExecution , and AnthropicMCP , available through LLM's -T interface or Python tools= . The previous -o web_search* options have been removed in favor of -T WebSearch . #79 Upgraded to llm>=0.32 .…

Summary published by Simon Willison's Weblog · 4 Aug 2026 · Read the original ↗

llm 0.32

Release: llm 0.32 See my detailed blog post about this release . Tags: llm

Summary published by Simon Willison's Weblog · 4 Aug 2026 · Read the original ↗

Devtools must be open source (exe.dev)

My comment on Devtools must be open source (exe.dev) — Hacker News. One of the arguments for open source software for end-users has always been the freedom to examine and modify how that software works. The reality for most people - even expert programmers - has been that the freedom is more about being able to lean on other people to do that. Most people can't justify the time commitment…

Summary published by Simon Willison's Weblog · 3 Aug 2026 · Read the original ↗