New Bugster models: GPT 5.4, GPT 5.4 mini, and Gemini

We have included three new models for Bugster: GPT 5.4, GPT 5.4 mini, and Gemini 3 Flash. That’s right, you can now run Bugster on Gemini as well. When picking Gemini or one of the OpenAI-hosted models, you still need to provide your own API key. Both GPT-5.4 and GPT-5.4 mini are available as elmah.io-hosted for Enterprise users as well.

While adding the new models, we have deprecated all GPT-4.1* models. If you have one of these models configured, please upgrade to a corresponding v5 model. We will remove all support for 4.1 models on Oct 14, 2026 (or before if everyone has moved).

If you are curious about Bugster, check out How to configure and use Bugster.