GPT-4.1 vs GPT-5.5
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-4.1 vs GPT-5.5: side by side
| Spec | GPT-4.1 | GPT-5.5 | Winner |
|---|---|---|---|
| Intelligence | 19.4 | 41.7 | GPT-5.5 |
| Output speed | 99 t/s | 52 t/s | GPT-4.1 |
| Output price | $8.00/1M | $30.00/1M | GPT-4.1 |
| Context | 1048K | 1050K | GPT-5.5 |
| Params | — | — | Tie |
| Provider | OpenAI | OpenAI | Tie |
GPT-4.1
Pros
- +Handles very large context windows
- +Processes images, text, and files together
- +Strong reasoning from OpenAI GPT lineage
Cons
- –Closed-source with no public weights
- –May hallucinate on complex tasks
- –High compute cost for full context
GPT-5.5
Pros
- +Extremely large context window
- +Native support for files and images
- +Flexible multimodal workflows
Cons
- –No native audio or video support
- –Large context may increase latency
- –Performance depends on input quality across modalities
Frequently asked questions
It depends on your needs. GPT-4.1 and GPT-5.5 are both multimodal models; the comparison table above shows where each one leads on the metrics that matter. See the verdict for a recommendation.