GPT-5.4

Example workflows

Starting points built from this record, not transcripts of a run. Each prompt is written the way it should be sent, as one paragraph, and each is worth editing before you send it.

1. 01

   Stand it up from scratch

   You have read the record and want GPT-5.4 working in a real project rather than a sandbox.

   Set up GPT-5.4 in this project — GPT-5.4 standard, Pro, Mini, and Nano variants. Walk it end to end, tell me exactly what you changed, and flag anything I have to switch on myself before it works.

   Expected outcome

   A working setup, a plain list of what changed, and a short list of anything left for you to switch on. Check that list before assuming it is done.

2. 02

   Tuning cost-per-build across teams

   The record lists this as one of the jobs GPT-5.4 is meant for, so it is a fair first test of whether it fits your app.

   In this project, use GPT-5.4 for tuning cost-per-build across teams. Build the smallest version that a real user could complete end to end, keep the change scoped to that path, and tell me how to test it myself.

   Expected outcome

   One complete path a user can walk, the files and settings that changed, and the steps to test it. Walk it yourself before you ship it.

3. 03

   Review it before you publish

   GPT-5.4 is wired in and you are about to put it in front of people. This is the pass that catches the half-configured version.

   Review how this project uses GPT-5.4 before I publish. Check multiple cost/quality tiers (Pro, standard, Mini, Nano), list anything that is missing, misconfigured, or only half wired, fix what is safe to fix, and tell me what you left alone and why.

   Expected outcome

   A findings list split into what was fixed and what was left, with a reason for each. Anything left alone is yours to decide on.

Frequently asked

• What is GPT-5.4?

  GPT-5.4 is Lovable's AI Models feature: GPT-5.4 standard, Pro, Mini, and Nano variants. GPT-5.4 family — including Pro, standard, Mini, and Nano variants — is selectable in Lovable AI for builds requiring OpenAI-class reasoning.

• Is GPT-5.4 GA or in beta?

  GPT-5.4 is generally available (GA) on Lovable.

• What Lovable plan includes GPT-5.4?

  GPT-5.4 is available on Lovable's Paid plans plan.

• When did GPT-5.4 launch?

  GPT-5.4 launched on Apr 15, 2026.

• GPT-5.5 (Pro and Standard)Same category, also GA · Apr 2026
• Claude Opus 4.7Same category, also GA · Apr 2026
• Gemini 3.5 FlashSame category, also GA · May 2026