gpt-5.4Coming soonMarch 2026 release — sits between mini and 5.5. Strong cost/intel ratio.
Multi-turn dialogue, system prompts.
SSE chunks for incremental output.
Structured arguments via JSON schemas.
Pass images alongside the prompt.
Text and image to short video, async.
Coming soon.
This route is listed in the catalog, but it is not callable until an admin maps an active upstream key to gpt-5.4.