GPT-5.4 API Officially Launched: 1 Million Token Context Window, Native Computer Control, and 5 Core Capabilities Explained

Author's Note: GPT-5.4 has been officially released and its API is now open for calls. It supports a 1 million token context window, native computer control, and full-resolution vision. APIYI has already integrated it—register now to start calling it.

GPT-5.4 was officially launched on March 5, 2026. It's OpenAI's most powerful general-purpose model to date. For the first time, it combines a 1 million token context window, native computer control, and full-resolution vision into a single model. Its GDPval benchmark score jumped from 70.9% with GPT-5.2 to 83.0%, and it even surpassed human performance on the OSWorld computer control test.

Core Value: By reading this article, you'll understand GPT-5.4's 5 core capabilities, benchmark performance, API access methods, and pricing details, and learn how to call it immediately through the APIYI platform.

GPT-5.4 API Key Points

Three GPT-5.4 API Model Variants

For the first time, GPT-5.4 offers three variants tailored for different needs:

GPT-5.4 Standard (gpt-5.4): The general-purpose flagship model, supporting a 1 million token context, native computer control, and full-resolution vision processing. Ideal for professional scenarios requiring a balance of capability and cost.

GPT-5.4 Thinking (gpt-5.4-thinking): The reasoning-enhanced version, supporting five reasoning levels: none/low/medium/high/xhigh. Available to all paying users in ChatGPT, it's suitable for complex analysis, financial modeling, and deep research.

GPT-5.4 Pro (gpt-5.4-pro): The highest-performance version, aimed at enterprise-level tasks requiring ultimate accuracy. Available in ChatGPT Pro ($200/month) and Enterprise plans.

🎯 Access Recommendation: APIYI (apiyi.com) has already integrated the full GPT-5.4 series, with pricing aligned with OpenAI's official website. You can start calling it immediately upon registration. Top-ups of $100 or more get a 10% bonus, making it a convenient gateway for domestic developers to quickly access the GPT-5.4 API.

GPT-5.4 API Benchmark Test Results

GPT-5.4 API Benchmark Detailed Data

A few key takeaways:

GPT-5.4 has a commanding lead in professional work capabilities (GDPval), matching or surpassing industry experts in 83% of comparisons. This means it's getting very close to—and in some cases exceeding—professional-level performance in real-world scenarios like financial analysis, spreadsheet processing, and PowerPoint creation.

The computer control (OSWorld 75.0%) result is the most impressive breakthrough—it actually surpasses the 72.4% human performance benchmark. This means GPT-5.4 can recognize screen content from screenshots and use keyboard and mouse inputs to complete complex, cross-application workflows.

🎯 Practical Advice: Benchmarks are just a reference; real-world performance varies by scenario. We recommend getting free test credits through APIYI at apiyi.com to compare GPT-5.4's actual performance against other models in your specific use cases.

GPT-5.4 API Pricing and Access Methods

GPT-5.4 API Official Pricing

The APIYI platform has been updated with pricing consistent with OpenAI's official site: Input $2.50/M, Output $15.00/M. Recharge $100 or more and get a 10% bonus. Register now to access the full GPT-5.4 model series.

GPT-5.4 API Minimal Integration Example

Here's the simplest way to call it, up and running in just 10 lines of code:

import openai

client = openai.OpenAI(
    api_key="YOUR_API_KEY",
    base_url="https://vip.apiyi.com/v1"
)

response = client.chat.completions.create(
    model="gpt-5.4",
    messages=[{"role": "user", "content": "Analyze the key metrics in this quarterly financial report"}]
)
print(response.choices[0].message.content)

import openai
import base64

client = openai.OpenAI(
    api_key="YOUR_API_KEY",
    base_url="https://vip.apiyi.com/v1"
)

# Full-resolution image analysis
def analyze_image(image_path: str, prompt: str) -> str:
    with open(image_path, "rb") as f:
        image_data = base64.b64encode(f.read()).decode()
    response = client.chat.completions.create(
        model="gpt-5.4",
        messages=[{
            "role": "user",
            "content": [
                {"type": "text", "text": prompt},
                {"type": "image_url", "image_url": {
                    "url": f"data:image/png;base64,{image_data}",
                    "detail": "original"
                }}
            ]
        }]
    )
    return response.choices[0].message.content

# Deep analysis with reasoning effort level
def deep_analysis(prompt: str, effort: str = "high") -> str:
    response = client.chat.completions.create(
        model="gpt-5.4",
        messages=[{"role": "user", "content": prompt}],
        reasoning={"effort": effort}  # none/low/medium/high/xhigh
    )
    return response.choices[0].message.content

result = analyze_image("financial_report.png", "Analyze the anomalous data in this financial statement")
print(result)

Recommendation: Register an account via APIYI at apiyi.com to get your API key. Recharge $100 or more to enjoy a 10% bonus credit. The platform supports the full GPT-5.4 series and other mainstream models through a unified interface, making it easy to quickly compare and switch.

GPT-5.4 vs. Competitor Models

GPT-5.4 API Model Selection Guide by Use Case

Selection Advice: Not sure which model to choose? Start with GPT-5.3 Instant for daily tasks (lowest cost), and switch to GPT-5.4 for complex jobs. All models are accessible via the unified APIYI apiyi.com interface, so you don't need to switch platforms.

Frequently Asked Questions

Summary

Here are the key takeaways from the official launch of the GPT-5.4 API:

1. Five Core Capabilities in One Model: 1M Token context window, native computer control (surpassing human performance with 75.0% on OSWorld), full-resolution vision, tool search (reducing Tokens by 47%), and a 33% accuracy improvement.
2. Reasonable Pricing with Major Cache Discounts: Input at $2.50/M, output at $15.00/M, with cached input as low as $0.25/M (a 90% discount).
3. Three Variants for All Scenarios: Standard for general use, Thinking for deep reasoning, and Pro for peak performance.

GPT-5.4 is currently OpenAI's most powerful general-purpose model, especially well-suited for tasks requiring computer control, ultra-long document processing, and high-precision visual analysis.

We recommend using APIYI at apiyi.com for quick and easy access to GPT-5.4. The platform offers pricing in sync with the official rates, provides a 10% bonus on top-ups of $100 or more, and gives you instant access to the full model suite upon registration.

📚 References

1. OpenAI GPT-5.4 Official Announcement: Details on the GPT-5.4 release and its core capabilities

   • Link: openai.com/index/introducing-gpt-5-4/
   • Description: Official documentation for understanding GPT-5.4's new features like computer control and visual processing.

2. OpenAI GPT-5.4 API Documentation: Model specifications, pricing, and interface parameter details

   • Link: developers.openai.com/api/docs/models/gpt-5.4
   • Description: Essential reading for developers, containing technical details like model IDs, context limits, and rate limits.

3. TechCrunch GPT-5.4 Coverage: In-depth analysis of the Pro and Thinking versions

   • Link: techcrunch.com/2026/03/05/openai-launches-gpt-5-4-with-pro-and-thinking-versions/
   • Description: Understand the differences and suitable use cases for the three GPT-5.4 variants.

4. LLM Stats GPT-5.4 Benchmark Tests: Complete benchmark data and competitor comparisons

   • Link: llm-stats.com/models/gpt-5.4
   • Description: View GPT-5.4's rankings and specific scores across various benchmark tests.

Author: APIYI Technical Team
Technical Discussion: Feel free to discuss in the comments. For more resources, visit the APIYI documentation center at docs.apiyi.com.