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OpenAI: GPT-5.4 Pro
openai/gpt-5.4-proTry OpenAI: GPT-5.4 Pro now
Runs on your balance at the prices above. New accounts start with free usage.
One API. Every model.
Session cost $0.00
Settings
Advanced parameters
OpenAI: GPT-5.4 Pro at a glance
- Input price is 6567% higher than the median of 434 Text models.
- Context window of 1,050,000 tokens, enough for long documents and multi-turn conversations.
- Supports tool (function) calling for agents and integrations.
- Supports structured JSON output with a schema.
- Supports reasoning effort control.
- Accepts images as input (vision).
- A typical request (1,000 input / 500 output tokens) costs about $0.42.
About OpenAI: GPT-5.4 Pro
GPT-5.4 Pro is a text generation model from OpenAI, listed on api14 under the model id openai/gpt-5.4-pro. It sits in the text category and is described by OpenAI as its most advanced model, building on the unified architecture of GPT-5.4 with enhanced reasoning capabilities aimed at complex, high-stakes tasks.
The model accepts text, images and files as input, and it returns text only. Its context window is 1,050,000 tokens, and the maximum output length is 128,000 tokens. Reasoning behaviour is exposed through request parameters rather than being fixed, so you can decide how much internal reasoning effort the model applies to a given request.
Because it combines a very large context window with image and file inputs and configurable reasoning, the model suits work where the input is long or heterogeneous and the answer has to hold up under scrutiny. Examples include reviewing large document sets or codebases in a single request, extracting structured information from scanned pages or mixed text and image material, and multi-step analysis where the model needs to reason over many sources before answering. Structured outputs and tool calling make it usable as the decision-making component inside an automated pipeline rather than only as a chat endpoint.
You call the model through api14's OpenAI-compatible API using the model id openai/gpt-5.4-pro, which means existing OpenAI SDKs and clients work with only a base URL and key change. The supported request parameters are include_reasoning, max_completion_tokens, max_tokens, reasoning, reasoning_effort, response_format, seed, structured_outputs, tool_choice, tools and verbosity. Use max_completion_tokens or max_tokens to bound output length, reasoning_effort or reasoning to control how much reasoning the model performs, response_format together with structured_outputs when you need the reply to conform to a schema, and tools with tool_choice when the model should call functions you define. The seed parameter is available for reproducibility, and verbosity lets you adjust how expansive the generated text is.
The facts given do not include rate limits, latency figures or regional availability, so check the live price table and your account limits before committing to this model for high-volume traffic. If your task is short-form text generation that does not benefit from a 1M token context or configurable reasoning, a smaller model in the catalogue may be a simpler fit.
How to call the OpenAI: GPT-5.4 Pro API
- Create an API key in your dashboard.
- Install the official openai SDK for your language.
- Set baseURL to https://api14.com/api/v1 and model to "openai/gpt-5.4-pro".
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api14.com/api/v1",
apiKey: process.env.API14_API_KEY,
});
const result = await client.chat.completions.create({
"model": "openai/gpt-5.4-pro",
"messages": [
{
"role": "user",
"content": "Explain vector databases in two sentences."
}
]
});
console.log(result.choices[0].message.content);
Supported parameters
include_reasoningmax_completion_tokensmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choicetoolsverbositySpecifications
- Context length
- 1,050,000
- Max output
- 128,000
- Input
- text, image, file
- Output
- text
Requests on api14 · last 7 days
OpenAI: GPT-5.4 Pro: frequently asked questions
- How much does the OpenAI: GPT-5.4 Pro API cost?
- OpenAI: GPT-5.4 Pro costs Input $105.00 / 1M tokens. It is charged from your USD balance only for successful requests; failed requests are free.
- What is the context window of OpenAI: GPT-5.4 Pro?
- OpenAI: GPT-5.4 Pro reads up to 1,050,000 tokens per request: prompt, history and documents together. It writes up to 128,000 output tokens per response.
- What can OpenAI: GPT-5.4 Pro do?
- OpenAI: GPT-5.4 Pro accepts text, image, file and returns text. It supports tool calling, structured JSON output, reasoning effort control.
- How do I call OpenAI: GPT-5.4 Pro from my code?
- Point any OpenAI SDK at https://api14.com/api/v1 and set the model to "openai/gpt-5.4-pro". No other code changes. Copy a ready example from the code panel on this page.
- What are alternatives to OpenAI: GPT-5.4 Pro?
- Comparable Text models at a similar price: OpenAI: GPT-5.5 Pro, OpenAI: GPT-5.2 Pro, OpenAI: GPT-5 Pro. Each runs through the same API key, so switching is one string.
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