GPT-5.4 Mini vs GPT-5 Codex
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-5.4 Mini vs GPT-5 Codex: side by side
| Spec | GPT-5.4 Mini | GPT-5 Codex | Winner |
|---|---|---|---|
| Intelligence | 48.9 | 44.6 | GPT-5.4 Mini |
| Output speed | 181 t/s | 150 t/s | GPT-5.4 Mini |
| Output price | $4.50/1M | $10.00/1M | GPT-5.4 Mini |
| Context | 400K | 400K | Tie |
| Params | — | — | Tie |
| Type | Proprietary | Proprietary | Tie |
| Provider | OpenAI | OpenAI | Tie |
GPT-5.4 Mini
Pros
- +Very large context window
- +Native support for files, images, and text
- +Flexible multimodal workflows
- +Suitable for document-heavy tasks
Cons
- –Mini size may reduce depth on complex reasoning
- –Performance depends on input quality across modalities
- –Long contexts can increase latency
GPT-5 Codex
Pros
- +Handles extremely large inputs effectively
- +Strong coding specialization
- +Unified text and image reasoning
Cons
- –High resource demands with maximum context
- –Limited to text and static images
- –Potential coherence loss in very long outputs
Frequently asked questions
It depends on your needs. GPT-5.4 Mini and GPT-5 Codex are both multimodal models; the comparison table above shows where each one leads on the metrics that matter. See the verdict for a recommendation.