Now Supporting GPT-5.5 and gpt-image-2
Hello,
This is GPT Prompt Tester.
With the v1.0.4 update, GPT Prompt Tester now supports GPT-5.5 and gpt-image-2.
This update expands the range of models you can use inside the app, making it easier to test advanced text prompts, compare model responses, and experiment with image generation prompts in a more structured workflow.
Key Updates
- Added support for GPT-5.5
- Added support for gpt-image-2
- Expanded model options for Playground, Writing Studio, and Eval workflows
- Improved image generation workflow with the latest image model support
- Strengthened the environment for testing both text and image prompts
1. GPT-5.5 Support
GPT Prompt Tester now supports GPT-5.5.
With GPT-5.5, you can test more advanced prompts that involve complex instructions, longer context, writing, coding, analysis, and structured reasoning tasks.
This is especially useful in GPT Prompt Tester’s core workflows, such as:
- Running and comparing prompts in GPT Playground
- Testing different versions of the same prompt
- Improving titles, drafts, and writing outputs in Writing Studio
- Analyzing and improving prompts with Eval
- Testing prompts with detailed conditions and constraints
- Comparing response quality across different models
Instead of simply running a prompt once and moving on, you can now use GPT-5.5 to examine how more advanced prompts perform, compare the results, and refine your prompt assets more effectively.
2. gpt-image-2 Support
This update also adds support for gpt-image-2 in Image Maker.
With gpt-image-2, you can experiment with more detailed image generation prompts and explore different visual directions inside GPT Prompt Tester.
It can be useful for tasks such as:
- Creating blog thumbnail concepts
- Generating product or service visuals
- Testing marketing image ideas
- Designing poster, banner, or social media image concepts
- Comparing different image prompt styles
- Exploring multiple visual directions from the same topic
Since Image Maker is designed to help you manage prompts, styles, and generated results together, gpt-image-2 support makes image prompt testing more practical and flexible.
3. Text and Image Workflows in One App
GPT Prompt Tester is not just a simple API testing tool.
It is designed to help you test prompts, compare results, analyze outputs, and reuse your best prompt workflows.
With v1.0.4, both text and image workflows become stronger.
For example, you can use GPT-5.5 to generate and refine a blog post, then use gpt-image-2 in Image Maker to create a thumbnail or visual concept for the same content.
You can also test marketing copy in GPT Playground, compare different versions, and then generate image concepts that match the selected message.
In other words, this update is not just about adding new model names.
It makes GPT Prompt Tester more useful as a complete workspace for experimenting with both text and image prompts.
4. Who This Update Is For
This update is especially useful for users who want to:
- Test prompts with the latest GPT model support
- Compare model responses in a structured way
- Use GPT-5.5 for writing, coding, analysis, or prompt refinement
- Experiment with AI image generation prompts
- Create blog, marketing, or content assets using both text and images
- Save, compare, and reuse prompt results over time
GPT Prompt Tester v1.0.4 expands the app’s prompt testing environment with support for GPT-5.5 and gpt-image-2.
With GPT-5.5, you can test more advanced text-based workflows.
With gpt-image-2, you can explore richer image generation workflows.
We will continue improving GPT Prompt Tester as a workspace where prompts are not just typed once and forgotten, but tested, compared, improved, and reused as valuable assets.
Thank you.
GPT Prompt Tester
