OpenAI · GPT / o-series / DALL·E

OpenAI Full API Suite

Access the full OpenAI model suite through a unified interface—GPT-5, GPT-4o, o3, and o1 conversational reasoning; DALL·E 3 / GPT Image generation; and Embeddings vectorization.

📄 View Documentation 🎨 Image Generation

🧠 GPT-5 / GPT-4o 💡 o3 / o4-mini Reasoning 🎨 DALL·E 3 / GPT Image 📐 Embeddings

25+

Available Models

API Endpoints

Token

Usage-Based Billing

∞

No Rate Limits

Full OpenAI Capabilities

Conversational reasoning, image generation, image editing, text vectorization—one API Key does it all

💬

Chat Completions

Full support for GPT-5, GPT-4o, GPT-4.1 series, and o-series reasoning models, including streaming output, tool calling, and JSON Mode.

🧠

Responses API

OpenAI's latest Responses API format supports the same models as Chat Completions and provides more flexible interaction methods.

🎨

Image Generation / Editing

DALL·E 3, DALL·E 2, and GPT Image 1 / 1.5 support text-to-image generation and image editing, with multiple size and quality options.

📐

Embeddings

Two embedding models, text-embedding-3-small and text-embedding-3-large, for semantic search, clustering, and RAG applications.

Direct Connection with the Native OpenAI SDK

Simply modify base_url to access the full range of OpenAI models through Ace Data Cloud, with full compatibility with the official SDK.

Python

from openai import OpenAI
client = OpenAI(
base_url="https://api.acedata.cloud",
api_key="YOUR_API_KEY"
)
# Chat Completions
response = client.chat.completions.create(
model="gpt-5",
messages=[
{"role": "user", "content": "解释机器学习的核心概念"}
]
)
print(response.choices[0].message.content)
# Image Generation
image = client.images.generate(
model="gpt-image-1",
prompt="A futuristic city at sunset",
n=1
)
print(image.data[0].url)

Get Started in 3 Quick Steps

From registration to completing your first API call, it only takes a few minutes.

Get an API Key

Choose an API and Model

Choose the Chat, Images, or Embeddings API based on your needs, along with the required model.

Make a Request

Use the OpenAI SDK or an HTTP request; simply modify base_url to make calls.

What is the OpenAI API suitable for?

Covering a variety of AI application scenarios, including text, images, embeddings, and more.

💻

Coding Assistant

GPT-5 and o3 excel at programming tasks and can be used for code generation, review, and debugging.

🤖

AI Customer Service / Chatbots

Build intelligent customer service systems with GPT-4o-mini, offering cost-effective and efficient conversational capabilities.

🎨

AI Image Generation

DALL·E 3 and GPT Image generate high-quality images, ideal for design and marketing content creation.

🔍

Semantic Search / RAG

The Embeddings API converts text into vectors to build semantic search engines and knowledge base Q&A systems.

📊

Data Analysis

Provide data for GPT to analyze trends and generate reports and visualization recommendations.

🔬

Complex Reasoning

Reasoning models such as o3 and o3-pro excel at mathematical proofs, logical analysis, and multi-step problem solving.

API Endpoints

5 API endpoints covering all OpenAI capabilities

💬 Chat Completions

Conversational text generation with support for streaming output, tool calling, and more.

/openai/chat/completions

🧠 Responses

OpenAI's next-generation response interface, supporting the same model set.

/openai/responses

🎨 Images Generations

Generate images from text with DALL·E 3 / GPT Image.

/openai/images/generations

✏️ Images Edits

Edit images based on images and text prompts.

/openai/images/edits

📐 Embeddings

Convert text into vectors for search, clustering, and RAG.

/openai/embeddings

Model Matrix

Choose the most suitable model by task

🚀 GPT-5 Series

Latest flagship conversational models, with greatly enhanced reasoning and creative capabilities.

gpt-5 gpt-5-mini gpt-5-nano gpt-5-pro gpt-5.4-pro

✨ GPT-5.x / GPT-6 Series

Enhanced GPT-5 versions; 5.1, 5.2, 5.4, and 5.5 continuously improve capabilities, while GPT-6 Astra, Sol, Luna, and GPT-6.1 Sol cover different reasoning and long-context needs.

gpt-5.1 gpt-5.2 gpt-5.2-pro gpt-5.4 gpt-5.5 gpt-5.5-pro gpt-5.6-luna gpt-5.6-terra gpt-6-astra gpt-6.1-sol gpt-6.1-terra

🎨 Image Models

Text-to-image and image editing.

gpt-image-1 gpt-image-1.5 gpt-image-2 gpt-image-2.5-flare gpt-image-2.5-flare:official gpt-image-2.5-sunburst gpt-image-2.5-sunburst:official dall-e-3

OpenAI API Pricing

Pay for actual usage: official chat and image channels are billed by Token, standard images by image, and embeddings by Token—GPT / o series chat Token prices are as low as 20% of OpenAI's official prices.

Bulk packages offer even greater discounts

Pay as you go

Token / Per-image billing

Low price Based on actual usage

Official text and image channels are billed by Token, standard images by image, with no minimum spend

✓ Full GPT-5 / 4o / 4.1 series
✓ o3 / o4-mini reasoning models
✓ Chat Tokens as low as 20% of official prices
✓ Image generation starting at $0.0105 / image
✓ Embeddings as low as $0.0027 / million Tokens
✓ Streaming—Free

View pricing details

Enterprise

Custom

Dedicated plans for high-volume teams

✓ Usage-based tiered discounts
✓ Priority support and account manager
✓ Custom rate limits
✓ SLA guarantee
✓ Private deployment options

Contact sales

🎨 Image Generation Reference Prices

Model	Specification	Price per Image
GPT Image 1	All sizes	$0.019
GPT Image 1.5	All sizes	$0.052
GPT Image 2.5 Flare	All sizes	$0.0105
GPT Image 2.5 Flare Official	Actual Token usage	Page estimate
GPT Image 2.5 Sunburst	All sizes	$0.0105
GPT Image 2.5 Sunburst Official	Actual Token usage	Page estimate
DALL·E 3	Standard 1024×1024	$0.019
DALL·E 3	Standard 1024×1792	$0.038
DALL·E 3	HD 1024×1024	$0.038
DALL·E 3	HD 1024×1792	$0.057
DALL·E 2	1024×1024	$0.0095

Frequently Asked Questions

Common questions about using the OpenAI API

What is the difference from using the official OpenAI API directly?›

Ace Data Cloud provides proxy APIs fully compatible with the official OpenAI format, with no need to register an OpenAI account or link an overseas credit card. A single API Key provides access to models from OpenAI, Claude, Gemini, Grok, and more.

What is the difference between GPT-5 and GPT-4o?›

GPT-5 is OpenAI's latest flagship model, comprehensively surpassing GPT-4o in reasoning, creativity, and knowledge capabilities. GPT-4o is a well-validated, cost-effective option suitable for cost-sensitive scenarios.

What scenarios are o-series reasoning models suitable for?›

Reasoning models such as o3, o3-pro, and o4-mini perform deep thinking before providing answers, making them especially suitable for tasks requiring in-depth reasoning, such as mathematical calculations, logical reasoning, and code analysis. o3-mini and o4-mini offer reasoning capabilities at a lower cost.

What is the difference between GPT Image and DALL·E 3?›

The GPT Image series supports image generation and editing; GPT Image 2.5 Flare focuses on speed, while Sunburst focuses on high fidelity and fine-grained control. Both 2.5 models offer :official variants billed based on actual Token usage. DALL·E 3 is a dedicated image-generation model that supports multiple quality and size options, including Standard/HD.

Which model is best for Embeddings?›

text-embedding-3-small is recommended for the best cost performance ($0.0027 / million Token). For higher accuracy, use text-embedding-3-large ($0.017 / million Token). The legacy ada-002 is no longer available; existing indexes must regenerate vectors when upgrading.