GPT 5.4 Pro

Chat GPT 5.4 Pro is a high-fidelity model built for rigorous backend tasks. While this Chat GPT 5.4 Pro model takes its time, it delivers unparalleled accuracy for complex coding and math challenges where precision is the only priority.

Modalities

Context

API Usage Examples

curl --request POST "https://gptproto.com/v1/chat/completions" \
  --header "Authorization: Bearer $GPTPROTO_API_KEY" \
  --header "Content-Type: application/json" \
  --data '{
    "model": "gpt-5.4-pro",
    "messages": [
      {
        "role": "user",
        "content": "Hello"
      }
    ]
  }'

GPT 5.4 Pro pricing

Estimate a request with real work scenarios. GPTProto token pricing is 20% below official rates.

UsageQuantityRateCost

Input tokens

tokens

$24/1M$0.0288

Output tokens

tokens

$144/1M$0.0576

Cost per request$0.0864

Requests

Top-up amount

Top-up $100 and you get:

1. Top-up credits with permanent validity. You will receive a total of $100.00.

2. Additional 20% model discount, saving $24.9559 versus direct official OpenAI API calls.

Related Models

All Models

Model					Input → Output
GPT 5.4 ProCurrent		1.05M	$24.00 / $144.00 per 1M	—	Input: TextInput: ImageInput: Document Output: Text
GLM 5.3 Flash	—	—	$0.15 / $0.50 per 1M	— / $0.03 per 1M	Input: TextInput: ImageInput: VideoInput: Document Output: Text
DeepSeek v4 Flash Vision Exp	—	—	$0.44 / $1.32 per 1M	— / $0.01 per 1M	Input: TextInput: Image Output: Text
GLM 5.3		1.05M	$1.26 / $3.96 per 1M	— / $0.23 per 1M	Input: TextInput: ImageInput: Document Output: Text
Gemini 3.7 Flash		1.05M	$0.45 / $2.25 per 1M	— / $0.04 per 1M	Input: TextInput: ImageInput: Document Output: Text
Grok 4.6		500K	$1.20 / $3.60 per 1M	— / $0.30 per 1M	Input: TextInput: Image Output: Text
Qwen3.8 Max		1M	$1.80 / $5.40 per 1M	$2.25 / $0.23 per 1M	Input: TextInput: ImageInput: VideoInput: Document Output: Text
Claude Opus 5		1M	$4.50 / $22.50 per 1M	$5.63 / $0.45 per 1M	Input: TextInput: ImageInput: Document Output: Text
Gemini 3.6 Flash		1.05M	$0.45 / $2.25 per 1M	— / $0.04 per 1M	Input: TextInput: ImageInput: Document Output: Text
Gemini 3.5 Flash Lite		1.05M	$0.18 / $1.50 per 1M	$0.02 / $0.02 per 1M	Input: TextInput: ImageInput: Document Output: Text
Kimi K3		1.05M	$2.70 / $13.50 per 1M	$0.27 / $0.27 per 1M	Input: TextInput: ImageInput: Document Output: Text
GPT 5.6 Luna		1.05M	$0.16 / $0.96 per 1M	$0.20 / $0.02 per 1M	Input: TextInput: ImageInput: Document Output: Text
GPT 5.6 Terra		1.05M	$1.60 / $9.60 per 1M	$2.00 / $0.16 per 1M	Input: TextInput: ImageInput: Document Output: Text
GPT 5.6 Sol		1.05M	$4.00 / $24.00 per 1M	$5.00 / $0.40 per 1M	Input: TextInput: ImageInput: Document Output: Text
Grok 4.5		500K	$1.20 / $3.60 per 1M	$0.30 / $0.30 per 1M	Input: TextInput: Image Output: Text
Claude Sonnet 5		1M	$1.80 / $9.00 per 1M	$2.25 / $0.18 per 1M	Input: TextInput: Document Output: Text
MiniMax M3		1.05M	$0.48 / $0.96 per 1M	$0.10 / $0.10 per 1M	Input: TextInput: ImageInput: Document Output: Text
GLM 5.2		1.05M	$1.26 / $3.96 per 1M	$0.23 / $0.23 per 1M	Input: TextInput: ImageInput: Document Output: Text
GPT 5.1 Chat Latest		—	$1.00 / $8.00 per 1M	$0.10 / $0.10 per 1M	Input: TextInput: ImageInput: Document Output: Text
Claude Fable 5		1M	$9.00 / $45.00 per 1M	$11.25 / $0.90 per 1M	Input: TextInput: Document Output: Text
Qwen3.7 Max		1M	$0.36 / $1.44 per 1M	$0.07 / $0.07 per 1M	Input: TextInput: Document Output: Text
DeepSeek v4 Flash	—	1.05M	$0.44 / $1.32 per 1M	— / $0.01 per 1M	Input: Text Output: Text
DeepSeek v4 Pro	—	1.05M	$1.32 / $3.96 per 1M	— / $0.04 per 1M	Input: Text Output: Text
Grok 4.3		1M	$0.75 / $1.50 per 1M	$0.12 / $0.12 per 1M	Input: TextInput: Image Output: Text
GPT 5.5 Pro		1.05M	$24.00 / $144.00 per 1M	—	Input: TextInput: ImageInput: Document Output: Text
GPT 5.5		1.05M	$4.00 / $24.00 per 1M	$0.40 / $0.40 per 1M	Input: TextInput: ImageInput: Document Output: Text
Kimi K2.6		262K	$0.85 / $3.60 per 1M	$0.14 / $0.14 per 1M	Input: TextInput: Document Output: Text
MiniMax M2.5		205K	$0.24 / $0.96 per 1M	$0.30 / $0.02 per 1M	Input: TextInput: Document Output: Text
Kimi K2.5		262K	$0.54 / $2.70 per 1M	$0.09 / $0.09 per 1M	Input: TextInput: Document Output: Text
Qwen Turbo		—	$0.04 / $0.18 per 1M	$0.009 / $0.009 per 1M	Input: Text Output: Text
Doubao Seed 1.6 Thinking (Build 250715)		262K	$0.10 / $0.97 per 1M	—	Input: TextInput: Image Output: Text
Doubao Seed 1.6 Thinking (Build 250615)		262K	$0.10 / $0.97 per 1M	—	Input: TextInput: Image Output: Text
Doubao Seed 1.6 Flash (Build 250615)		262K	$0.02 / $0.18 per 1M	—	Input: TextInput: Image Output: Text

Chat GPT 5.4 Pro Key Features

The standout technical capabilities of the Chat GPT 5.4 Pro model for power users.

Complex Math Problem Solving

GPT 5.4 Pro solved the Erdős math problem with an elegant proof, showcasing its capability for deep research and logic.

Backend Coding and Refactoring

Highly effective for backend tasks, GPT 5.4 Pro excels at restructuring code without adding unnecessary UI fluff.

Strict Prompt Fidelity

This model follows your instructions literally, avoiding the unrequested additions often found in newer AI versions.

Low Hallucination Depth

GPT 5.4 Pro is praised for its accuracy and depth, providing reliable text generation for enterprise institutions.

Chat GPT 5.4 Pro FAQ and Insights

Find answers about Chat GPT 5.4 Pro capabilities, coding performance, and API access for enterprise research.

How does Chat GPT 5.4 Pro handle complex math research?

Chat GPT 5.4 Pro is uniquely capable of solving high-level research problems. It recently gained attention for providing a short, elegant proof for a 64-year-old math problem by Erdős. This makes it a primary choice for academic researchers and mathematicians who need more than just basic arithmetic and logic from their chat tools.

Is Chat GPT 5.4 Pro good for backend coding chat?

Yes, Chat GPT 5.4 Pro is highly effective for backend development and refactoring work. Unlike some models that prioritize UI design, this chat version focuses on the underlying logic. It is particularly valued by developers for its ability to clean up complex codebases while remaining strictly faithful to the original architectural prompts provided during the chat session.

Why is the Chat GPT 5.4 Pro thinking time longer?

The model prioritizes depth and accuracy over raw speed. Users have noted that Chat GPT 5.4 Pro may take several minutes to process complex queries that newer, faster models breeze through. However, this extra processing time results in significantly lower hallucination rates, making it more reliable for mission-critical enterprise applications and detailed technical chat interactions.

What are the chat safety triggers in Chat GPT 5.4 Pro?

Chat GPT 5.4 Pro includes robust safety guardrails. While these are necessary for ethical AI use, some developers may hit triggers during specific technical tests, such as memory overload simulations in C++. The model is designed to refuse tasks that could be interpreted as malicious or unstable, ensuring a secure chat environment for all users and institutions.

How does it compare to GPT 5.5 for chat prompts?

Chat GPT 5.4 Pro is notably more faithful to the original prompt than newer versions like 5.5. While 5.5 might try to 'pretty up' the output by adding unrequested details, GPT 5.4 Pro sticks to the specific instructions given. This literal adherence is crucial for developers who need precise control over the model's generated chat text output without creative drift.

Who should use the Chat GPT 5.4 Pro API?

Given the higher cost and specialized performance, the Chat GPT 5.4 Pro API is ideal for large corporations, research universities, and big institutions. It is built for those who require high-accuracy text generation and complex problem-solving capabilities where the cost is justified by the depth and reliability of the chat response.

Guides, comparisons, and updates related to this model.

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