One API · All Models · Token Billing

One entry point for every model

A model API aggregation service for developers, creators, and teams.

ChatGPT
Claude
Gemini
DeepSeek
Qwen
Product capability

Model aggregation starts at the entry point

Bring OpenAI-compatible calls, mainstream models, and unified billing into one gateway so integration, routing, and accounting stay connected.

SDK

OpenAI-compatible integration

Keep the existing SDK pattern. Replace the Base URL and platform key to reduce migration effort.

baseURLSDK

client = OpenAI({

apiKey: API_ZENO_KEY,

baseURL: https://api.api-zeno.com/v1

})

OpenAI SDKapi-zeno gatewayMulti-model response
Base URLAPI_ZENO_KEYSDK

Key

Model route

Billing record

Route

Unified model routing

GPT, Claude, Gemini, DeepSeek, and other models can be selected, retried, and observed through one entry point.

Existing app
Multi-model response
api-zeno gatewayRoute
Ledger

Billing and logs in one place

Collect cost by model, group, and token usage while keeping request logs and cost signals visible.

Key
Model route
Billing record

Keep your SDK, change one entry point

The code block now belongs to integration: copy your existing SDK setup, point baseURL to api-zeno, then observe route, latency, and token usage.

OpenAI SDKbaseURLapi-zeno

https://api.api-zeno.com/v1

1

Create an account

Create an account and use the free trial to complete your first request and validate the basic integration.

2

Choose a model

Use the model marketplace to review capability tags, status, and reference pricing, then choose the right model for the task.

3

Replace API configuration

Replace the original OpenAI SDK Base URL with https://api.api-zeno.com/v1, then call it with your API Key.

4

Choose a billing method

Use token-based billing for low-frequency or variable usage, and subscriptions for stable calls.

Status: 200 OK
typescript
import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.API_ZENO_KEY,
  baseURL: "https://api.api-zeno.com/v1",
});

const completion = await client.chat.completions.create({
  model: "gpt-4o-mini",
  messages: [{ role: "user", content: "Hello api-zeno" }],
});
Status

200 OK

Route

gpt-4o-mini

Latency

842ms

Tokens

1,284

Development, creation, and teamwork share one path

The API gateway supports backend calls, content generation, quota governance, billing traces, and supplier operations.

Creator tasks

Text, image, video, and audio jobs can enter one creator workspace from the console.

Text

Image

Video

Audio

Open Creator workspace

Team governance

Quota, logs, permissions, and supplier boundaries live inside the same management view.

Quota
Logs
Permissions
Suppliers

View model capabilities, pricing, and use cases in one place

Common models are presented together across low $ consumption chat, strong reasoning, code generation, and multimodal capabilities, making it easier to choose by provider, capability tags, $ reference prices, and business scenario.

OpenAI

GPT-4o

gpt-4o

Stable
MultimodalGeneral chatTool calling

Input reference price

2.50 $ / 1M Token

Output reference price

10.00 $ / 1M Token

Recommended scenario

Best for production scenarios that need stable general capability, image-text understanding, and complex business assistants.

OpenAI

GPT-4o mini

gpt-4o-mini

Stable
Low $ consumptionFast responseBatch tasks

Input reference price

0.15 $ / 1M Token

Output reference price

0.60 $ / 1M Token

Recommended scenario

Best for support routing, content summarization, lightweight Q&A, and high-concurrency calls with low $ consumption.

Anthropic

Claude Sonnet

claude-sonnet-4

Stable
Long textCodeWriting

Input reference price

3.00 $ / 1M Token

Output reference price

15.00 $ / 1M Token

Recommended scenario

Best for long document understanding, code collaboration, knowledge-base Q&A, and high-quality writing.

Google

Gemini Flash

gemini-2.5-flash

New
Fast responseMultimodalLong context

Input reference price

0.30 $ / 1M Token

Output reference price

2.50 $ / 1M Token

Recommended scenario

Best for multimodal understanding, real-time Q&A, long-context summaries, and fast prototype validation.

Prices shown here are reference examples for the website. Model availability, reference prices, and billing details are subject to the platform display.

Usage-based billing

Not only subscriptions, you can also pay by actual token usage

Pay for what you use. Billing is based on actual token consumption, so occasional calls do not require a fixed package upfront. It fits testing, personal development, low-frequency calls, and temporary projects while keeping $ consumption flexible as usage changes.

Try first, then pay by usage

Validate integration and model behavior first, then choose usage-based billing or subscriptions according to actual call volume.

Clear $ consumption

Input tokens, output tokens, and model $ prices are visible, making per-call $ consumption easier to estimate.

Fits different usage scales

Testing, personal development, low-frequency calls, and temporary projects can all start with usage-based billing.

Billing method

Token-based billing example

Token usage

18,420

Example usage

Input tokens

12,480

Output tokens

5,940

Input tokens12,480
Output tokens5,940
Input / output $ price0.15 / 0.60 $
Estimated $ consumption0.0054 $
Start with a free trial and choose billing by actual scale

Usage-based billing and subscriptions

Choose usage-based billing for lightweight use, or subscriptions for stable workloads.

Usage-based billing

Pay by actual model token consumption with no fixed monthly fee

Suitable for testing, personal development, temporary projects, and $ consumption-sensitive scenarios. Different models show separate input and output token $ reference prices, making consumption estimation easier by actual usage.

Input and output tokens calculated separatelyNo fixed monthly feeCan coexist with subscriptions
CNY 20Quick testingCNY 100Daily developmentCNY 500Small team useCNY 2000High-frequency prepaid usage
Register for usage-based billing

Recharge tiers are website examples. Actual model prices and billing details are subject to the platform display.

Subscriptions

Subscriptions fit stable calls and fixed quota needs

Monthly plans suit teams or projects with stable call volume that need fixed quotas and ongoing integration support.

  • Daily quota resets automatically
  • Fixed monthly fee helps budget planning
  • Upgrade from free trial to a paid plan
Choose plan

Subscriptions

Subscriptions fit stable calls and fixed quota needs.

Choose plan

Free

New users get this free plan with $7 weekly quota

New user trial
¥0 / month

Weekly quota: $7 / week

Starter

Personal plan

¥48 / month

Monthly quota: $220 / month

Pro

Personal plan

¥119 / month

Monthly quota: $600 / month

Choose usage-based billing for lightweight use and subscriptions for stable calls. Amount tiers are website examples only. Model prices and billing details are subject to the platform display.

FAQ

Quickly understand api-zeno integration, billing, and support.

Usage-based billing is usually calculated by actual token usage and fits testing, low-frequency calls, and variable usage. Subscriptions fit stable calls and usually include fixed quotas and related benefits.

No. You can start with a free trial and then choose usage-based or token-based billing according to actual call volume. Subscriptions are better for long-term, stable, or higher-frequency usage.

Pricing is mainly calculated by model and token usage. Input token and output token unit prices may differ by model. The platform display is the final reference.

The model marketplace centralizes available models, capability tags, $ reference prices, and recommended scenarios, helping you choose models by price, capability, and use case.

Yes. In most cases, you only need to replace the Base URL and API Key to keep using your original OpenAI SDK call pattern.

Yes. Model prices can be affected by providers, model capabilities, and platform policies. Website prices are references only, and the platform display is the final source.

For lightweight chat and $ consumption-sensitive scenarios, start with lower-consumption models. For complex reasoning, code, multimodal, or long-text tasks, compare capability tags and prices in the model marketplace.

Need integration or model selection support?

Contact support to learn about the model marketplace, token-based billing, subscriptions, and integration support.

View examples

Start with a free trial and choose the right model and billing method

Complete your first request first, then choose usage-based billing or subscriptions by capability tags, reference pricing, and call scale in the model marketplace.