GPT-5.4 Pro
VerifiedMultimodal model excelling at large-scale text, image, and file tasks.
About GPT-5.4 Pro
GPT-5.4 Pro combines text, image, and file processing in a single closed-weight system from OpenAI. Its architecture accommodates a 1,050,000-token context window, allowing it to maintain coherence across very long multimodal sequences. This design supports unified analysis of diverse data types without external chunking.
Strengths center on sustained context retention and cross-modal integration for lengthy documents, visual content, and attached files. The model avoids open-weight distribution, keeping optimizations proprietary. It suits professional workflows where large-scale input handling reduces the need for repeated prompting.
Typical usage includes detailed document review with embedded images, multi-file code or report analysis, and extended conversational threads that reference prior visual or textual material. Developers integrate it into pipelines requiring one-pass understanding of substantial multimodal datasets.
Capabilities
How GPT-5.4 Pro compares
GPT-5.4 Pro (striped bar) vs other multimodal on intelligence, speed and price.
Price
USD per 1M output tokens · Lower is better · GPT-5.4 Pro ranks #121 of 122
Sources: Artificial Analysis (intelligence, speed) · OpenRouter (price).
Best for
Long-Document Analysis
The 1,050,000-token context window enables GPT-5.4 Pro to perform reasoning across entire books, research collections, or large code repositories in one pass.
Multimodal Content Review
It combines text and image understanding to analyze documents containing charts, diagrams, and visual data alongside written content.
Complex Software Development
The model supports code generation, debugging, and file processing for intricate programming tasks and large-scale system design.
Strengths & limitations
Strengths
- +Handles very large inputs across modalities
- +Strong integration of text, image, and file data
- +Advanced reasoning over extended contexts
- +Versatile for document and visual tasks
Limitations
- –Higher latency on maximum-length inputs
- –No native audio or video support
- –Proprietary access with usage constraints
Pricing by provider
Live per-provider pricing & uptime, routed via OpenRouter. Prices are USD per 1M tokens.
| Provider | Input /1M | Output /1M | Context | Uptime |
|---|---|---|---|---|
| OpenAI | $30.00 | $180.00 | 1050K | — |
| Azure | $30.00 | $180.00 | 1050K | — |
Cost calculator
Estimate what GPT-5.4 Pro would cost for your usage.
Based on GPT-5.4 Pro's $30.00/1M input · $180.00/1M output. Estimate only — actual cost varies by provider and caching.
Quick start
OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. Only the model slug changes between models.
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://openrouter.ai/api/v1",
apiKey: process.env.OPENROUTER_API_KEY,
});
const completion = await client.chat.completions.create({
model: "openai/gpt-5.4-pro",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(completion.choices[0].message.content);Model slug: openai/gpt-5.4-pro
Editor's verdict
GPT-5.4 Pro is OpenAI's proprietary multimodal with a 1050K-token context window.
At $180.00 per 1M output tokens, it is premium-priced for its class, served by 2 providers.
It is available through OpenAI's API and aggregators like OpenRouter.
Best suited to handles very large inputs across modalities and strong integration of text, image, and file data.
Frequently asked questions
GPT-5.4 Pro supports a context length of 1,050,000 tokens.
User reviews
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