GPT-5.4 vs Grok 4.3
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 vs Grok 4.3: side by side
| Spec | GPT-5.4 | Grok 4.3 | Winner |
|---|---|---|---|
| Intelligence | 51.4 | 35.4 | GPT-5.4 |
| Output speed | 148 t/s | 136 t/s | GPT-5.4 |
| Output price | $15.00/1M | $2.50/1M | Grok 4.3 |
| Context | 1050K | 1000K | GPT-5.4 |
| Params | — | — | Tie |
| Provider | OpenAI | xAI | Tie |
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
Grok 4.3
Pros
- +Strong performance on complex multi-step reasoning
- +Large context window for document-level tasks
- +Helpful and direct response style
Cons
- –Vision capabilities less mature than specialized models
- –Occasional over-refusal on edge-case queries
- –High computational cost for maximum context usage
Frequently asked questions
It depends on your needs. GPT-5.4 and Grok 4.3 are both multimodal models; the comparison table above shows where each one leads on the metrics that matter. See the verdict for a recommendation.