Simon Willison

Introducing ChatGPT Images 2.5

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Simon Willison announces the release of ChatGPT Images 2.5, noting that OpenAI’s image generation models have processed over 3 billion images across ChatGPT Images and the GPT‑Image API. The new version improves instruction‑following across multiple turns, speeds up responses, and better preserves subjects from reference photos. Two new API model IDs—gpt‑image‑2.5‑sunburst and gpt‑image‑2.5‑flare—are available, with Sunburst recommended for precision editing and Flare for fast, high‑quality everyday generation. Willison has updated his openai_image.py CLI tool to accept reference images, demonstrating its use with a raccoon scientist prompt.

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Simon Willison
Oct 6

llm-openai-decisions 0.1a0

Simon Willison announces the release of the llm-openai-decisions 0.1a0 plugin, which interfaces with OpenAI’s new Jev-style Decisions API. The plugin, inspired by llm-typesafe, supports image and text input and offers the same three question types (yes/no, choices, scores) as Jev, with pricing at 10¢ per million input tokens. Installation is simple via `llm install llm-openai-decisions`, and an example query demonstrates image-based evaluation.

Simon Willison
Oct 23

Quick Study

Quick Study is a tool that lets users open a photo and quickly generate a painted version of it using a canvas element and a simulated paintbrush. The process relies on Sobel edge detection and requires no external libraries beyond Google Fonts. It builds on previous experiments that used Claude Fable to create watercolor illustrations with P5.js.

Simon Willison
4d ago

llm 0.37

The release of llm 0.37 introduces numerous new features and fixes accumulated over two months, including new GPT-6.1 models, an openai endpoint add command, and a cheaper default model (gpt-6-luna). It enhances embedding support for varied content types and incorporates many AI‑assisted pull requests from multiple authors. The update also highlights the project’s efficient handling of AI‑generated contributions, aided by triage tools like Opus 5.5 and GPT-6 Astra.

Simon Willison
Sep 5

Using Blender with coding agents on macOS

Simon Willison demonstrates how to use Blender with coding agents on macOS by installing the full Mac application from blender.org and issuing prompts to ChatGPT Codex. He shows a step-by-step example where the agent renders a scene of a pelican riding a bicycle, then adds background flair and improves the image. The resulting image is generated via Blender's Python API.