Stay informed with the latest news and updates to help you get the most out of GPT Prompt Tester.
We share new feature releases, improvements, bug fixes, and other important updates to keep you up to date.
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 v1.0.2 update introduces a new panel comparison feature in GPT Playground, making it easier to compare prompts, variables, model options, results, and key metrics in one place. This release also improves Writing Studio quality, refines the Eval PDF flow, and makes OpenAI usage cost calculations more accurate.
GPT Prompt Tester v1.0.0 introduces data backup and restore for Pro users, making it easier to protect prompt history, Eval results, Writing assets, Image Maker data, and other work records. This update also adds GPT-5.4-mini and GPT-5.4-nano, giving users a faster, more stable, and more cost-efficient environment for prompt testing and experimentation.
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.
The v0.9.8 update of GPT Prompt Tester enhances the Prompt Analysis & Improvement (Eval) workflow. Users can now track analysis progress, close the Eval panel while analysis continues in the background, and quickly access results from the execution history using P · R · I badges. These improvements make prompt testing, analysis, and refinement more seamless and efficient.
The GPT Prompt Tester v0.9.4 update introduces an expanded Eval feature with the new Response Quality analysis, allowing users to evaluate the quality of GPT-generated responses. In addition, Microsoft Store subscription stability and internal architecture improvements have enhanced the overall reliability and performance of the application.
GPT Prompt Tester v0.8.9 has been officially released after passing Microsoft Store review. This update introduces support for the latest GPT-5.4 model, streaming responses in Playground, new Eval / Improve request settings, and Usage Dashboard tracking for Eval usage. It also adds Microsoft Store subscription support and improves the stability and reliability of the Image Maker feature.
The GPT Prompt Tester v0.8.8 update introduces Microsoft Store subscription support, adds English (App UI) support and prompt language settings, and improves the overall licensing flow and user interface. This update also enhances stability and usability across key features including Playground, Writing, Image Makers, and the Usage Dashboard.
GPT Prompt Tester v0.8.0 introduces Image Maker, a structured workflow for generating, comparing, and refining AI images inside a powerful desktop workspace.
GPT Prompt Tester v0.7.5 delivers a refined writing experience across the entire workflow — from topic selection and draft generation to editing, publishing, and history management. This update focuses on UX improvements, enhanced stability, more precise editing tools (including Pro-only selective refinement), and stronger WordPress publishing controls. It’s a quality-focused release designed to make writing smoother, smarter, and more structured.
