Model comparison
Gemini 3.1 Pro vs GPT-5.4
The most significant observable difference is Gemini 3.1 Pro's support for audio and video inputs, which GPT-5.4 lacks.
Gemini 3.1 Pro
Google's latest frontier model with expanded reasoning.
OpenAI
GPT-5.4
OpenAI's flagship — broadest modality and ecosystem coverage.
Specs
| Metric | Gemini 3.1 Pro | GPT-5.4 |
|---|---|---|
| Context window | 1.0M tokens | 1.1M tokens↑ |
| Input $/1M tokens | $2.00↑ | $2.50 |
| Output $/1M tokens | $12.00↑ | $15.00 |
| Modalities | Audio · File · Image · Text · Video | Text · Image · File |
| Open weights | No | No |
How they differ
Reasoning approach
Gemini 3.1 Pro
Gemini 3.1 Pro is designed for multimodal reasoning across text, audio, image, and video inputs.
GPT-5.4
GPT-5.4 is optimized for text-based reasoning, with additional support for image and file inputs.
Context handling
Gemini 3.1 Pro
Gemini 3.1 Pro supports up to 1,048,576 tokens with integrated multimodal capabilities.
GPT-5.4
GPT-5.4 supports up to 1,050,000 tokens, with its focus on text and image data.
Cost profile
Gemini 3.1 Pro
Gemini 3.1 Pro costs $2.0 per 1M input tokens and $12.0 per 1M output tokens.
GPT-5.4
GPT-5.4 costs $2.5 per 1M input tokens and $15.0 per 1M output tokens.
Vision
Gemini 3.1 Pro
Gemini 3.1 Pro supports multimodal visual inputs, including images and videos.
GPT-5.4
GPT-5.4 supports image inputs but does not include video processing.
Gemini 3.1 Pro — what sets it apart
- +Supports audio and video inputs, enabling richer multimodal interaction.
- +Offers slightly lower input and output costs, making it more cost-efficient for certain use cases.
GPT-5.4 — what sets it apart
- +Has a marginally larger context window capacity at 1,050,000 tokens.
- +Specializes in high-quality text and image tasks, excluding audio and video integration.
The most consequential difference is Gemini 3.1 Pro's capability to handle audio and video inputs, while GPT-5.4 focuses primarily on text and image tasks with a slightly larger token limit.
Analysis synthesized from gpt-4o, llama-4-maverick, phi-4, etc.