One API, All Models
Access ChatGPT, Claude, Gemini, DeepSeek, Qwen, MiniMax, and more through one unified API key.
Use one OpenAI-compatible endpoint for text, vision, image, video, audio, embeddings, rerank, and other supported model APIs.
One API for All Top AI Models
Access leading AI models through one OpenAI-compatible API.
Top up once, manage usage clearly, and save up to 70% with automatic discounted billing.
Why Choose SynStar AI
A unified AI API gateway built for faster access, lower costs, and clearer usage control.
Save Up To 70%
Reduce API costs with automatic discounted billing. SynStar AI provides up to 70% off vs. Official pricing. Pay-as-you-go, no subscriptions, no lock-in. Top up anytime, use at your own pace credits never expire. Full usage dashboard included.
OpenAI-Compatible Migration
Use familiar OpenAI-style request formats and SDK patterns.
For many OpenAI-compatible use cases, migration only requires changing the base_url, api_key, and model value.
Global Multi-Region Coverage
Over 200,000 developers and 70+ enterprise relay partners rely on SynStar AI every day.
SynStar AI supports multi-region routing across major regions including the United States, Japan, South Korea, the United Kingdom, Russia, and more.
Blazing Fast Response
Global route deployment with smart load balancing ensures consistently low latency. High-concurrency architecture handles traffic spikes with ease.
Transparent Usage & Spend Control
Monitor API usage, request logs, token consumption, billing groups, and credit deductions from your dashboard.
Set API key quotas, expiration time, RPM / TPM limits, and project-level usage controls.
200K+
Satisfied Customers
8+
Global Regions
50+
Rely Partners
70%
API Cost Saving
Start Building in Minutes
Create your API key, Top up credits, Choose a billing group, and Send your first request through one OpenAI-compatible API.
Create an Account
Sign up with your email, go to console and get started, we will provide some free credits for trial.
Create API key
Log in your account, go to Token Management on Dashboard. Generate an API key and choose the right Token Group for your usage.
Configure Base URL
Use SynStar AI OpenAI-compatible base URL to connect your application.
Send first request
Make your first call via text, image, audio, video, and more through one unified API. Track your usage in the console.
Example Request
{
"model": "gpt-5.5",
"messages": [
{"role": "user", "content": "Hello, SynStar AI!" }
],
"temperature": 0.3,
"max_tokens": 512,
"stream": false
}All AI Capabilities, One SynStar API
Connect text, image, audio, embeddings, rerank, and tool calling models through one OpenAI-compatible endpoint.
Text & Chat
Generate, summarize, translate, and analyze text with advanced LLMs.
Image Generation
Create images from text prompts with supported image models.
Audio & Voice
Transcribe, synthesize, and process audio with leading models.
Embeddings
Create vector embeddings for search, clustering, and RAG.
Rerank
Improve search relevance and ranking with rerank models.
Tool Calling
Build agents and workflows with structured tool calling.
Top Up Once. Save Automatically
Add USD credits to your balance, then let SynStar AI apply the right billing rate automatically based on your Token Group.
Deep Savings Group
0.3×of listed model price
Save 70%
- Best for selected high-discount models
- Automatically applied by Token Group
Claude Models Group
0.5×of listed model price
Save 50%
- Applies to Claude model family
- Balanced cost for premium model access
Standard Savings Group
0.7×of listed model price
Save 30%
- Applies to standard savings model list
- Reliable everyday model usage
Top up credits
Get extra credits with every qualifying top-up.
$10
Receive $10
$50
Receive $50
$100
Receive $103
+3%
$500
Receive $520
+4%
$1,000
Receive $1,100
+10%
$1,000+
Receive
12% Bonus
Credits are added to your balance after a successful top-up.
Billing discounts are applied automatically during model usage based on your Token Group.
No hidden fees
Transparent per-usage billing
Pay as you go
No subscription required
Usage tracking
View spend, tokens, and billing details
Secure & reliable
Built for stable API access
Frequently asked questions
What is SynStar AI?
SynStar AI is an OpenAI-compatible AI API gateway that helps developers and teams access multiple AI models through one unified API.
With one API key and one base URL, you can call supported models for text, vision, image generation, video generation, audio, embeddings, reranking, and more.
Which models does SynStar AI support?
SynStar AI supports multiple leading model families, including GPT, Claude, Gemini, DeepSeek, Qwen, MiniMax, Llama, and more.
Available models may include chat, reasoning, vision, image, video, audio, embedding, and rerank models. You can view the latest supported models on the Models page.
Is SynStar AI OpenAI-compatible?
Yes. SynStar AI is designed to support OpenAI-compatible request formats.
For many OpenAI-compatible use cases, migration only requires changing the base_url, api_key, and model value. This makes it easier to use existing SDKs, tools, and workflows.
How do I get started?
You can start in a few steps:
- Create a SynStar AI account
- Top up credits to your balance
- Create an API key in Token Management
- Choose the appropriate Token Group
- Send your first API request through the SynStar AI endpoint
You can also follow the Quick Start guide in our Docs.
How does SynStar AI billing work?
SynStar AI uses prepaid credits and usage-based billing.
You top up credits to your account balance first. When you call a model through the API, credits are deducted based on the model price, token usage, and the Token Group billing rate.
This means you only pay for what you actually use.
What are Token Groups?
Token Groups determine how usage is billed when an API key is used.
SynStar AI supports different billing groups, such as 0.3x Group for selected high-discount models, 0.5x Group for Claude models, and 0.7x Group for standard savings models.
The billing rate is applied automatically during usage settlement based on the Token Group assigned to your API key.
How much can I save with SynStar AI?
Selected models can save up to 70% compared with listed model prices.
- 0.3x billing rate means up to 70% savings
- 0.5x billing rate means 50% savings
- 0.7x billing rate means 30% savings
Actual savings depend on the model, Token Group, and usage type.
Are there top-up rewards?
Yes. SynStar AI supports bonus credits for selected top-up amounts.
- $10 -> Receive $10
- $50 -> Receive $50
- $100 -> Receive $103
- $500 -> Receive $520
- $1,000 -> Receive $1,100
- Over $1,000 -> Receive 12% bonus credits
Top-up rewards increase your account balance. Billing discounts are applied separately when you use models.
Can I track my usage and spending?
Yes. SynStar AI provides usage logs and billing records in the dashboard.
You can track request time, API token, model name, input tokens, output tokens, Token Group, spend amount, request status, and billing details. This helps teams monitor usage clearly and control costs.
How can I contact support?
You can contact SynStar AI through email, Discord, or X.
- Email: contact@kkiai.com
- Discord: discord.gg/XVjvHvqkbv
- X / Twitter: x.com/Synstar_Joey
For faster support, please include your SynStar AI account email, the issue description, and any relevant request, billing, or payment details.