New release of LLM adds support for reasoning traces, OpenAI Responses, server-side tools, and smarter logging
- ID
- 10944
- Status
- summarized
- Published
- 05 Aug 2026, 7:58 AM
- Fetched
- 06 Aug 2026, 4:02 AM
- Provider
- Simon Willison
- Category
- developer-ai
- Original URL
- https://simonwillison.net/2026/Aug/4/new-release-of-llm/
- Source URL
- https://simonwillison.net/atom/everything/
Summary
- Score
- 8.0
- Created
- 07 Aug 2026, 1:30 PM
- Tags
- Audience
- developersai_ml_learnersai_agent_users
What happened
Simon Willison released LLM 0.32, a major update to his command-line tool for interacting with LLMs. The update adds visible reasoning traces sent to stderr, out-of-the-box support for the GPT-5.6 model family (defaulting to GPT-5.6 Luna), and the ability to use server-side provider tools like OpenAI's CodeInterpreter and Anthropic's new AnthropicMCP. It also introduces a `llm openai endpoint` command for running one-off prompts against any OpenAI-compatible endpoint, such as a local LM Studio server.
Why it matters
Developers can now use the `llm` CLI to easily invoke server-side tools and MCP servers from Anthropic in a single command, or run quick prompts against local models via LM Studio without a full installation using `uvx`. If you script LLM interactions, you should update to leverage reasoning traces being separated into stderr so they don't break your piped stdout.
Discussion angle
Exploring how the new `AnthropicMCP` server-side tool allows developers to chain external MCP servers directly into a single Anthropic API request via the CLI, and how this compares to running tools client-side.