Subscription Plans

The ZenMux Builder Plan subscription offers individual developers a fixed monthly fee and a predictable way to call AI models, so you can focus on coding and creating without worrying about per-request API costs.

What Are Flows?

A Flow is the metering unit used in the ZenMux subscription. It combines token usage and request count. To make it easier to understand:

1 Flow ≈ 1 request in a Claude Sonnet 4.5 coding scenario, or 10 requests in a Claude Haiku 4.5 coding scenario, where a typical coding scenario is 30,000 input tokens + 1,000 output tokens.

This approach ensures fair billing across different models and usage scenarios, giving you a clearer picture of how your subscription quota is being consumed.

Why Choose the Builder Plan?

💡 Key Benefits

Pain Point	Subscription Solution
Worried about burning money while Vibe Coding	Fixed pricing starting at $20/month—code freely
Learning new tech is too expensive	5–10× value leverage for low-cost exploration
Messy multi-platform account management	One API Key for all models
Limited budget for personal projects	Pro plan equals $100+ in API call value

🚀 Three Core Value Props

All-star model lineup
One subscription gives you access to the world’s top models (Gemini 2.5 Pro, the GPT-5 family, Claude Opus/Sonnet 4 family, and more). Use the latest state-of-the-art models as soon as they’re available—like having the best compute on the internet working together.
Outstanding price leverage
- Pro ($20/month): 50 Flows/5h, roughly equivalent to $100 in API call value
- Max ($100/month): 300 Flows/5h, 6× Pro usage
- Ultra ($200/month): 1200 Flows/5h, 24× Pro usage
Seamless IDE compatibility
No tool lock-in. One subscription API Key works with mainstream developer tools like Claude Code, Cursor, CodeX, and more.

Plan Comparison

Free - Free Trial

Supported models:

deepseek/deepseek-chat - DeepSeek-V3.2 (Non-thinking Mode)
deepseek/deepseek-reasoner - DeepSeek-R1.8
inclusionai/ling-1t - inclusionAI: Ling-1T
inclusionai/ling-mini-2.0 - inclusionAI: Ling-Mini-2.0
inclusionai/ring-1t - inclusionAI: Ring-1T
inclusionai/ring-mini-2.0 - inclusionAI: Ring-Mini-2.0
minimax/minimax-m2.1 - MiniMax: MiniMax M2.1
stepfun/step-3 - StepFun: Step-3
volcengine/doubao-seed-1.8 - VolcanoEngine: Doubao-Seed-1.8
xiaomi/mimo-v2-flash - Xiaomi: MiMo-V2-Flash
z-ai/glm-4.6v-flash - Z.AI: GLM 4.6V Flash
z-ai/glm-4.7 - Z.AI: GLM 4.7

Pro - Developer Favorite

Supported models: 70+ premium models, grouped by provider below (model slug - description)

Anthropic Claude Family

anthropic/claude-opus-4.5 - Claude Opus 4.5
anthropic/claude-sonnet-4.5 - Claude Sonnet 4.5
anthropic/claude-haiku-4.5 - Claude Haiku 4.5
anthropic/claude-opus-4.1 - Claude Opus 4.1
anthropic/claude-opus-4 - Claude Opus 4
anthropic/claude-3.5-sonnet - Claude 3.5 Sonnet
anthropic/claude-3.5-haiku - Claude 3.5 Haiku
anthropic/claude-3.7-sonnet - Claude 3.7 Sonnet
anthropic/claude-sonnet-4 - Claude Sonnet 4

OpenAI GPT Family

openai/gpt-5.2 - GPT‑5.2
openai/gpt-5.2-chat - GPT‑5.2 Chat
openai/gpt-5.2-codex - GPT‑5.2 Codex
openai/gpt-5 - GPT‑5
openai/gpt-5-chat - GPT‑5 Chat
openai/gpt-5-codex - GPT‑5 Codex
openai/gpt-5-mini - GPT‑5 Mini
openai/gpt-5-nano - GPT‑5 Nano
openai/gpt-5.1 - GPT‑5.1
openai/gpt-5.1-chat - GPT‑5.1 Chat
openai/gpt-5.1-codex - GPT‑5.1 Codex
openai/gpt-5.1-codex-mini - GPT‑5.1 Codex Mini
openai/gpt-4.1 - GPT‑4.1
openai/gpt-4.1-mini - GPT‑4.1 Mini
openai/gpt-4.1-nano - GPT‑4.1 Nano
openai/gpt-4o - GPT‑4o
openai/gpt-4o-mini - GPT‑4o Mini
openai/o4-mini - o4-mini

Google Gemini / Gemma Family

google/gemini-2.0-flash - Gemini 2.0 Flash
google/gemini-2.0-flash-lite-001 - Gemini 2.0 Flash Lite
google/gemini-2.5-flash - Gemini 2.5 Flash
google/gemini-2.5-flash-lite - Gemini 2.5 Flash Lite
google/gemini-2.5-flash-image - Gemini 2.5 Flash Image
google/gemini-2.5-pro - Gemini 2.5 Pro
google/gemini-3-flash-preview - Gemini 3 Flash Preview
google/gemini-3-pro-preview - Gemini 3 Pro Preview
google/gemini-3-pro-image-preview - Gemini 3 Pro Image Preview
google/gemma-3-12b-it - Gemma 3 12B IT

xAI Grok Family

x-ai/grok-4 - Grok 4
x-ai/grok-4-fast - Grok 4 Fast
x-ai/grok-4-fast-non-reasoning - Grok 4 Fast Non‑Reasoning
x-ai/grok-4.1-fast - Grok 4.1 Fast
x-ai/grok-4.1-fast-non-reasoning - Grok 4.1 Fast Non‑Reasoning
x-ai/grok-code-fast-1 - Grok Code Fast 1

Z.AI GLM Family

z-ai/glm-4.6v - GLM 4.6V
z-ai/glm-4.6v-flash - GLM 4.6V Flash
z-ai/glm-4.7 - GLM 4.7
z-ai/glm-4.5 - GLM 4.5
z-ai/glm-4.5-air - GLM 4.5 Air
z-ai/glm-4.6 - GLM 4.6

DeepSeek Family

deepseek/deepseek-chat - DeepSeek Chat
deepseek/deepseek-chat-v3.1 - DeepSeek Chat V3.1
deepseek/deepseek-v3.2 - DeepSeek V3.2
deepseek/deepseek-v3.2-exp - DeepSeek V3.2 Exp
deepseek/deepseek-r1-0528 - DeepSeek R1 0528
deepseek/deepseek-reasoner - DeepSeek Reasoner

Qwen / Tongyi Qianwen Family

qwen/qwen3-coder - Qwen3 Coder
qwen/qwen3-coder-plus - Qwen3 Coder Plus
qwen/qwen3-max - Qwen3 Max
qwen/qwen3-max-preview - Qwen3 Max Preview
qwen/qwen3-vl-plus - Qwen3 VL Plus
qwen/qwen3-14b - Qwen3 14B
qwen/qwen3-235b-a22b-2507 - Qwen3 235B A22B 2507
qwen/qwen3-235b-a22b-thinking-2507 - Qwen3 235B A22B Thinking 2507

Moonshot / Kimi Family

moonshotai/kimi-k2-thinking - Kimi K2 Thinking
moonshotai/kimi-k2-thinking-turbo - Kimi K2 Thinking Turbo
moonshotai/kimi-k2-0711 - Kimi K2 0711
moonshotai/kimi-k2-0905 - Kimi K2 0905

Baidu ERNIE Family

baidu/ernie-5.0-thinking-preview - ERNIE 5.0 Thinking Preview
baidu/ernie-x1.1-preview - ERNIE X1.1 Preview

InclusionAI Family

inclusionai/ling-1t - Ling‑1T
inclusionai/ling-flash-2.0 - Ling Flash 2.0
inclusionai/ling-mini-2.0 - Ling Mini 2.0
inclusionai/llada2.0-flash-cap - LLADA 2.0 Flash Cap
inclusionai/ming-flash-omni-preview - Ming Flash Omni Preview
inclusionai/ring-1t - Ring‑1T
inclusionai/ring-flash-2.0 - Ring Flash 2.0
inclusionai/ring-mini-2.0 - Ring Mini 2.0

Meta Llama Family

meta/llama-3.3-70b-instruct - Llama 3.3 70B Instruct
meta/llama-4-scout-17b-16e-instruct - Llama 4 Scout 17B 16E Instruct

Mistral Family

mistralai/mistral-large-2512 - Mistral Large 2512

MiniMax Family

minimax/minimax-m2 - MiniMax M2
minimax/minimax-m2.1 - MiniMax M2.1

Kuaishou

kuaishou/kat-coder-pro-v1 - KAT‑Coder‑Pro‑V1

Stepfun

stepfun/step-3 - Step 3

ByteDance Volcengine Doubao

volcengine/doubao-seed-1-6-vision - Doubao Seed 1.6 Vision
volcengine/doubao-seed-1.8 - Doubao Seed 1.8
volcengine/doubao-seed-code - Doubao Seed Code

Xiaomi

xiaomi/mimo-v2-flash - MiMo V2 Flash

Max - High-Intensity Development

Additional ultra-flagship models supported:

openai/gpt-5.2-pro - GPT-5.2 Pro
openai/gpt-5-pro - GPT-5 Pro

Ultra - Professional Flagship

Supported models: Same as the Max plan, including all premium and ultra-flagship models.

Usage Limits

⚠️ Important

Subscription plans are designed for personal development, learning/exploration, and Vibe Coding in non-production scenarios. Please follow the usage rules below:

Rate Limits

Rate Limit: 10–15 RPM (requests per minute)
Quota window: Refreshes on a rolling 5-hour window
Weekly limit: Resets on a rolling weekly window

Applicable Scenarios

✅ Allowed:

Personal development and learning
Vibe Coding and rapid prototyping
Technical exploration and experiments
Personal projects and non-commercial applications

❌ Not allowed:

Live production environments
Commercial products or services
End-user-facing applications
Abuse such as multi-account pooling/round-robin usage

💡 Production recommendation

If your project is about to go live or is already commercialized, switch to the Pay-As-You-Go billing plan to get:

Higher SLA guarantees
More stable service quality
More flexible scaling
Professional commercial support

Step 1: Review plan details

Visit the ZenMux Pricing page to view full details and pricing for all subscription plans.

Select the plan that fits you on the Pricing page
Click "Get Max" or "Get Ultra" for the corresponding plan (Pro users click "Upgrade")
Complete the payment flow

💡 Whitelist access

If you need to apply for whitelist access, please visit our Contact Us page and reach out via any of the contact methods provided (preferably RedNote, WeChat, or Discord) to submit your request.

Step 3: Manage your subscription and get an API Key

After subscribing, go to the Subscription Management page:

📊 View usage
- Usage and remaining time in the current 5-hour window
- Weekly cumulative usage stats
- Flow consumption breakdown
🔑 Get a subscription API Key
- Generate an API Key dedicated to subscriptions
- Manage and rotate existing keys
- View the key’s last-used time
💳 Manage subscription
- View current plan details
- Upgrade or downgrade your plan
- View billing history

Step 4: Use it in developer tools

Once you have your subscription API Key, you can use it in various developer tools and applications.

Same usage as Pay As You Go

Subscription API Keys work exactly the same as Pay As You Go. They support the OpenAI SDK, Anthropic SDK, and direct HTTP calls. The only difference is that you must use the subscription-specific API Key (starts with sk-ss-v1-). Usage is automatically deducted from your subscription quota instead of your account balance.

💡 API call examples

For complete API call examples, see the Quickstart guide. Just replace the API Key in the examples with your subscription API Key.

Integrate with mainstream developer tools

Subscription API Keys can be seamlessly integrated into a wide range of AI coding tools and apps. For detailed setup steps, see:

🔧 AI Coding Tools

Claude Code Integration Guide - Anthropic’s official CLI tool
CodeX Integration Guide - AI code editor
Cline Integration Guide - VS Code AI assistant extension
VS Code Copilot Integration Guide - GitHub Copilot alternative
Neovate Integration Guide - Modern AI coding tool
OpenCode Integration Guide - Open-source AI coding assistant

💬 Knowledge Management & Chat Tools

Cherry Studio Integration Guide - Desktop AI chat app
Obsidian Integration Guide - AI plugin for the knowledge management tool
Sider Integration Guide - Browser sidebar AI assistant

🤖 AI App Platforms

Dify Integration Guide - LLM app development platform
Open WebUI Integration Guide - Self-hosted AI chat UI

📚 More integrations

More integration guides are continuously being added. If you need help, visit the Discord community or contact technical support.

Using Subscriptions in Studio Chat

In addition to using an API Key in developer tools, you can also use your subscription quota directly in ZenMux Studio Chat on the web.

Switch billing modes

On the Studio Chat page, you can flexibly choose—per conversation—whether to use subscription quota or Pay As You Go balance.

In the conversation settings, you’ll see the Billing Mode option:

Subscription - Uses subscription quota (Flows) and does not consume account balance
Pay As You Go - Deducts from your account balance based on actual usage

💡 Flexible switching

You can use different billing modes in different conversations. For example:

Daily development, learning, prototype validation → Subscription
Production testing, commercial project validation → Pay As You Go

You can switch at any time. The two modes do not affect each other, so you can always choose the best billing method for each scenario.

Studio Chat features

When chatting in Studio Chat using subscriptions, you get:

✅ Access to all models supported by your subscription plan (70+ premium models)
✅ Multimodal chat (text, images, file upload)
✅ Full chat history management
✅ Export chat transcripts
✅ Shared subscription quota with API calls

⚠️ Shared quota

Studio Chat and API calls use the same subscription quota pool. Conversations in Studio Chat consume subscription Flows—please plan your usage accordingly.

Developer Co-Creation Rewards

We value feedback from every user. Join the ZenMux improvement program to earn rewards:

🐛 Submit a valid bug report: $5 credit for each accepted bug
💡 Suggest an improvement: $5 credit for each accepted suggestion
🎁 Reward cap: Up to $50 credit per person (equivalent to reimbursing 2.5 months of Pro subscription fees)

How to participate:

Please visit our Contact Us page and reach out via any of the contact methods provided (preferably RedNote, WeChat, or Discord) to submit your feedback or suggestions.

FAQ

What’s the difference between subscriptions and Pay As You Go?

Feature	Subscription (Builder Plan)	Pay-As-You-Go
Billing	Fixed monthly fee	Pay for actual usage
Best for	Personal development, learning	Production, commercial apps
Cost predictability	✅ High (fixed monthly fee)	⚠️ Medium (varies with usage)
Rate limits	10–15 RPM	Higher; customizable
SLA	Standard	Higher
Price leverage	✅ 5–10×	Standard API pricing

When does my quota reset?

5-hour window: Uses a rolling window, measured from when you send requests, and resets once every 5 hours
Weekly limit: Measured from when you send requests, and resets every 7 days

You can view remaining quota and reset times in real time on the Subscription Management page.

Can I use multiple plans at the same time?

No. Each account can have only one active subscription plan at a time. If you need a higher quota, upgrade to Max or Ultra.

Next Steps

Now that you understand how the Builder Plan subscription works, you can:

📚 Read the Quickstart guide for detailed API usage
🔧 See Best Practices to integrate your subscription API Key into developer tools
💰 Learn about Pay As You Go, which is better suited for production billing
📊 Visit the Usage Analytics page to monitor subscription quota usage in real time
💵 Check Cost Analysis to learn how to optimize costs

If you run into any issues, or have suggestions and feedback, feel free to reach out via:

Website: https://zenmux.ai
Support email: [email protected]
Business email: [email protected]
Twitter: @ZenMuxAI
Discord: https://discord.gg/vHZZzj84Bm

For more contact options and details, please visit our Contact page.

Subscription Plans ​

What Are Flows? ​

Why Choose the Builder Plan? ​

💡 Key Benefits ​

🚀 Three Core Value Props ​

Plan Comparison ​

Free - Free Trial ​

Pro - Developer Favorite ​

Max - High-Intensity Development ​

Ultra - Professional Flagship ​

Usage Limits ​

Rate Limits ​

Applicable Scenarios ​

How to Subscribe ​

Step 1: Review plan details ​

Step 2: Choose and subscribe ​

Step 3: Manage your subscription and get an API Key ​

Step 4: Use it in developer tools ​

Same usage as Pay As You Go ​

Integrate with mainstream developer tools ​

Using Subscriptions in Studio Chat ​

Switch billing modes ​

Studio Chat features ​

Developer Co-Creation Rewards ​

FAQ ​

What’s the difference between subscriptions and Pay As You Go? ​

When does my quota reset? ​

Can I use multiple plans at the same time? ​

Next Steps ​