OpenAI fixes image encoding bug in GPT-6 Sol and GPT-6 Luna
The update improves results on visual tasks in the API and Codex, including computer use.
Models:GPT-6 SolGPT-6 Luna
What changed
OpenAI fixed a bug in image encoding that degraded image understanding in GPT-6 Sol and GPT-6 Luna. The update improves results on visual tasks in the API and Codex, including computer use. OpenAI recommends rerunning evaluations and retrying workflows affected by the issue when use cases involve image inputs.
What it means for Zabio customers
Developers using GPT-6 Sol or GPT-6 Luna for image inputs get better results without changing models. Zabio does not offer these models in its catalog.
What Zabio does
Nothing changes for Zabio customers.
Source
Fixed a bug in image encoding that degraded image understanding in GPT-6 Sol and GPT-6 Luna. This update improves results on visual tasks in the API and Codex, including computer use.
Original announcement: OpenAI API changelog
Published automatically from the official announcement. Reviewed by a person within the day.
Source: OpenAI API changelog (2026-09-25)