GPT-5.4 Pro

gpt-5.4-pro

GPT-5.4 Pro is the more precise and higher-quality tier of GPT-5.4, built for demanding professional tasks. OpenAI’s model guidance separates Pro from the standard version by its stronger reasoning and accuracy expectations. In a catalog, it should be described as the choice for difficult analysis, complex code, and high-stakes knowledge work when extra depth is worth the cost.

Context Window

1.1M tokens

Maximum Output

128K tokens

Release Date

Mar 5, 2026

Modalities

GPT-5.4 Pro Pricing

Token TierInput PriceOutput Price
<=272K$30/M$180/M
>272K$60/M$270/M

GPT-5.4 Pro API Capabilities

Reasoning

Supported

Tool calling

Supported

Temperature parameter

Not supported

Attachments

Supported

Knowledge Base

2025-08-31

Endpoint Protocols

Completions APIMessages API

GPT-5.4 Pro Model Highlights

GPT-5.4 Pro dedicates additional compute to difficult reasoning while combining large-context processing with text and image understanding.

Compute-Intensive Reasoning

Uses more compute than GPT-5.4 to think through tough problems and return more precise, consistently reasoned answers.

Large-Context Analysis

Analyzes up to 1,050,000 tokens of input context, supporting broad evidence sets, lengthy specifications and large code collections.

Text and Image Understanding

Reasons over image inputs together with accompanying text, allowing visual evidence to inform complex professional analysis.

GPT-5.4 Pro Use Cases

GPT-5.4 Pro fits demanding architecture decisions, extensive technical reviews and multimodal analysis where additional deliberation is valuable.

Architecture Decision Analysis

Compares system designs against technical constraints, identifies tradeoffs and produces a detailed architecture recommendation.

Extensive Technical Review

Examines long specifications, implementation documents and code collections to locate conflicts, omissions and technical risks.

Visual Document Investigation

Combines diagrams, screenshots and accompanying records to reconstruct issues and prepare carefully supported findings.

How to Use GPT-5.4 Pro via the TokenHub API

Create API key
import OpenAI from "openai"

const client = new OpenAI({
  apiKey: process.env.TOKENHUB_API_KEY,
  baseURL: "https://us-api.tokenhub.com/v1",
})

const result = await client.chat.completions.create({})
console.log(result.choices[0]?.message?.content)

Media and Discussions

Selected public videos and posts related to this model.

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Reddit

YouTube

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GPT-5.4 Pro FAQ

GPT-5.4 Pro: capabilities, use cases, limits, and TokenHub guidance.

What problem does GPT-5.4 Pro address?+

GPT-5.4 Pro is a OpenAI model for maximum-quality complex professional work.

When should I choose GPT-5.4 Pro?+

Best for complex coding, research and synthesis and professional documents and spreadsheets, especially when maximum answer quality is the priority.

What does GPT-5.4 Pro do well?+

Key strength: more test-time compute for smarter, more precise responses.

What does GPT-5.4 Pro sacrifice?+

The Pro variant is restricted to the Responses API and may take longer to finish. For speed and cost efficiency, consider GPT-5.4.

How do I use GPT-5.4 Pro in TokenHub?+

Use the exact ID shown by TokenHub; follow your account docs and verify current features.

Ready to use GPT-5.4 Pro?

Use one API key to access GPT-5.4 Pro and more AI models through TokenHub.

Create API key