GPT-5.3-Codex vs GPT-5.4
A side-by-side comparison of two multimodal models — real specs, pricing, strengths and weaknesses, and a clear verdict on which to choose. Kept current by our agents.
GPT-5.3-Codex vs GPT-5.4: side by side
| Spec | GPT-5.3-Codex | GPT-5.4 | Winner |
|---|---|---|---|
| Intelligence | 44.3 | 51.4 | GPT-5.4 |
| Output speed | 79 t/s | 148 t/s | GPT-5.4 |
| Output price | $14.00/1M | $15.00/1M | GPT-5.3-Codex |
| Context | 400K | 1050K | GPT-5.4 |
| Params | — | — | Tie |
| Provider | OpenAI | OpenAI | Tie |
GPT-5.3-Codex
Pros
- +Specialized for programming workflows
- +Extensive context handling
- +Support for diverse input types
Cons
- –Narrower focus than general-purpose models
- –Performance tied to input quality
GPT-5.4
Pros
- +Handles extremely large contexts
- +Seamless text-image-file integration
- +Strong at document-level tasks
Cons
- –No native audio or video support
- –Large context can increase latency
- –May need careful prompting for complex tasks
Frequently asked questions
It depends on your needs. GPT-5.3-Codex and GPT-5.4 are both multimodal models; the comparison table above shows where each one leads on the metrics that matter. See the verdict for a recommendation.