What this page answers
GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support for...
- OpenAI · openai/gpt-5.4
- text+image+file->text · global model route
- 1,050,000 context · $2.5 input
Before connecting
Do not stop at the model name. Before integration, verify base URL, protocol, visible models, parameters, and limits together.
- supports include_reasoning
- supports max_completion_tokens
- supports max_tokens
- supports reasoning
- supports response_format
Next action
The goal is to catch search demand, then move users into model profiles, provider profiles, and key checking.
- Check whether the model fits the use case
- Then verify key permission and callable models
