GPT-5.4 Pro vs GPT-5.5 Pro
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.
Quick verdict: which should you choose?
Choose GPT-5.4 Pro if you need
- ✓Handles very large inputs across modalities with strong text-image-file integration
- ✓Advanced reasoning over extended contexts for document and visual tasks
- ✓Versatile multimodal performance on large-scale inputs
Choose GPT-5.5 Pro if you need
- ✓Very large context window with native files, images, and text support
- ✓Seamless multimodal integration and strong reasoning over extended inputs
- ✓Maximum context handling when resource use is acceptable
Verdict
GPT-5.4 Pro and GPT-5.5 Pro are nearly identical on paper with matching $180/1M pricing, 1.05M token context, and proprietary OpenAI access. GPT-5.4 Pro leads slightly for document and visual task versatility while GPT-5.5 Pro emphasizes seamless integration and very large context handling. Both share the same limitations around latency, resource use, and lack of audio or video support.
GPT-5.4 Pro vs GPT-5.5 Pro: side by side
| Spec | GPT-5.4 Pro | GPT-5.5 Pro | Winner |
|---|---|---|---|
| Intelligence | — | — | Tie |
| Output speed | — | — | Tie |
| Output price | $180.00/1M | $180.00/1M | Tie |
| Context | 1050K | 1050K | Tie |
| Params | — | — | Tie |
| Provider | OpenAI | OpenAI | Tie |
Detailed analysis
Pricing
Winner: TieBoth models list identical output pricing at $180 per 1M tokens with no other cost details provided.
Context & Scale
Winner: TieBoth specify exactly 1050000 token context windows and emphasize handling of very large or maximum-length inputs.
Multimodal Capabilities
Winner: TieGPT-5.4 Pro highlights strong integration and versatility for document/visual tasks; GPT-5.5 Pro highlights native support and seamless integration. Both exclude audio and video.
Latency & Resources
Winner: TieGPT-5.4 Pro notes higher latency on maximum-length inputs; GPT-5.5 Pro notes high resource use and potential latency on very long inputs.
GPT-5.4 Pro
Pros
- +Handles very large inputs across modalities
- +Strong integration of text, image, and file data
- +Advanced reasoning over extended contexts
Cons
- –Higher latency on maximum-length inputs
- –No native audio or video support
- –Proprietary access with usage constraints
GPT-5.5 Pro
Pros
- +Very large context window
- +Native support for files, images, and text
- +Seamless multimodal integration
Cons
- –High resource use with maximum context
- –No audio or video modalities
- –Potential latency on very long inputs
Summary: GPT-5.4 Pro vs GPT-5.5 Pro
Choose GPT-5.4 Pro when document and visual task versatility is the priority. Choose GPT-5.5 Pro when seamless integration over a very large context is emphasized. In all measurable specs provided they are equivalent.
Frequently asked questions
The models are equivalent on all listed specs; GPT-5.4 Pro edges for document/visual versatility while GPT-5.5 Pro edges for seamless integration.