GPT Prompt Tester v1.0.4 adds support for GPT-5.5 and gpt-image-2. This update expands the app’s text and image prompt testing workflows, allowing users to compare advanced model responses, refine prompts, and experiment with image generation more effectively in one workspace.
The v0.9.9 update focuses on improving core usability and stability.
It introduces a new window close behavior option (Exit or Hide to Tray), prevents duplicate app execution by enforcing a single-instance model, and reorganizes settings into a unified General Settings panel.
Additional improvements include better tray behavior consistency, language reflection fixes, and resolving duplicated Eval results during history restoration.
