Subscription Plans ​

The 开桥 订阅计划 gives individual developers a fixed monthly fee and predictable access to AI models. A single subscription lets you tap into the world's top models, so you can focus on building instead of worrying about the cost of every API call.

Plan Overview ​

The 订阅计划 comes in four tiers. The main differences are quota size and model coverage.

Viewing the models included in a plan ​

The 开桥 model list changes continuously: new models launch, limited-time premium models rotate in and out, and some models move between plans — always treat the pricing page as the source of truth.

Look up the live list in three steps ​

Step 1 — Open the subscription pricing page and scroll down to the plan cards ​

Step 2 — 点击the View button on the plan card ​

Step 3 — Review the full list in the Supported models dialog ​

Plan details ​

The sections below describe how each plan is positioned and what its model coverage looks like. For the exact model list, use the View button on the corresponding card — this section deliberately does not name individual models.

Free — Try it out ​

For users getting to know 开桥, offering a zero-cost way to explore the platform's AI capabilities.

• Quota — 5 Flows per 5 hours (roughly 5 conversations)
• Model coverage — Basic models
• How to use it — Studio Chat on the web only; no API access

Starter — The everyday choice ​

The go-to plan for daily Vibe Working, well suited to product managers, marketers, operators, and lighter development work.

• Quota — 50 Flows per 5 hours
• Model coverage — Basic models plus premium models on a rotating, limited-time basis
• Plan benefits — Studio Chat and API access, 4 bonus window resets per month, priority technical support

Max — High-intensity development ​

A high-value plan for developers starting their Vibe Coding journey.

• Quota — 300 Flows per 5 hours (6× Starter)
• Model coverage — Basic plus premium models, covering the vast majority of mainstream flagship models
• Plan benefits — 3 bonus window resets per month, early access to new features, and everything in Starter

Ultra — Professional-grade flagship ​

Purpose-built for intensive Vibe Coding and professional-grade development.

• Quota — 800 Flows per 5 hours (16× Starter)
• Model coverage — All models
• Plan benefits — 2 bonus window resets per month, early access to new features, and everything in Max

What Are Flows? ​

Flow is the composite billing unit for 开桥 subscriptions, accounting for both token consumption and API call overhead.

Think of it as a currency: just as different goods carry different dollar prices, different AI models consume different numbers of Flows per request. Unlike pay-as-you-go Credits (fixed at 1 Credit = 1 USD), a Flow's USD-equivalent value floats — it reflects the real dollar value of the API usage behind it.

Real-time Flow/USD exchange rate ​

The pricing page provides a rate converter along with 1-week, 1-month, and 1-year historical charts. As of 2026-08-04, the rate is anchored at 1 Flow ≈ $0.03283 (about 30 Flows = $1).

Quotas and limits ​

Quota comparison across plans ​

The table above is a snapshot from 2026-08-04, intended to convey the relative scale of each tier.

• Equivalent USD value (Worth) — the theoretical maximum monthly API value included in the plan, based on equivalent pay-as-you-go pricing.
• Value leverage — equivalent USD value ÷ monthly fee, showing how many times your subscription cost you get back in API value.

Rate limits and quota windows ​

Both windows are rolling: the clock starts with your first request and resets automatically 5 hours or 7 days later. You can check remaining quota and reset times in real time on the subscription management page.

Window resets ​

Within each billing cycle, subscribers get a set number of 5-hour window resets. When your 5-hour quota is nearly exhausted, you can reset the window manually to restore your quota immediately instead of waiting for the rolling reset.

Usage guidelines ​

Subscription plans are designed for non-production scenarios such as personal development, learning, and Vibe Coding.

Why choose the 订阅计划? ​

Key benefits ​

Three core values ​

1. Coverage for every scenario

The 订阅计划 spans text, image generation, and video generation models. Whether you're a developer, designer, product manager, or marketer, one subscription covers the full range of Vibe Builder needs — Claude Code for coding, NanoBanana for images, and the GPT series for chat.

2. An all-star model matrix

One subscription gives you 100+ top models worldwide (the Claude, GPT, Gemini, GLM, Kimi, and MiniMax families, among others), with the newest flagships available immediately. Check the pricing page for the current list.

3. Seamless agent integration

Native support for the OpenAI, Anthropic, and Google protocols means no tool lock-in. A single subscription API Key works with Claude Code, CodeX, Open Code, OpenClaw, Cline, VS Code Copilot, and other popular community tools.

Compared with a Claude Code subscription ​

For the same $20 per month, 开桥 lets you:

• Use 100+ models instead of being limited to a single vendor
• Cover coding, image generation, video generation, and chat all at once
• Move seamlessly between Claude Code, Codex, and other tools with one API Key

How to subscribe ​

Step 1: Review plan details ​

Visit the subscription pricing page to see live pricing, quotas, and model lists for every plan.

Step 2: Choose and subscribe ​

1. Pick the plan that fits your needs on the pricing page
2. 点击Get Starter, Get Max, or Get Ultra (existing subscribers see Change Plan)
3. Complete payment

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

Once subscribed, head to the subscription management page:

• Review usage — current 5-hour window usage and time remaining, weekly totals, and a Flow consumption breakdown
• Get a subscription API Key — create subscription-specific keys, manage and rotate existing keys, and check last-used timestamps
• Manage your subscription — view your current plan, upgrade or downgrade, and review billing history

Step 4: Use it in developer tools ​

Subscription API Keys work exactly like pay-as-you-go keys, supporting the OpenAI SDK, the Anthropic SDK, and direct HTTP calls.

The only difference is that you use a subscription-specific API Key (prefixed with sk-ss-v1-), and calls draw Flows from your subscription quota instead of charging your account balance.

Integrate with mainstream tools ​

AI coding tools

• Claude Code integration guide - Anthropic's official CLI
• CodeX integration guide - OpenAI's official coding assistant
• Cline integration guide - VS Code AI assistant extension
• VS Code Copilot integration guide - A GitHub Copilot alternative
• Neovate integration guide - A modern AI coding tool
• OpenCode integration guide - Open-source AI coding assistant

Knowledge management and chat tools

• Cherry Studio integration guide - Desktop AI chat app
• Obsidian integration guide - AI plugin for the knowledge base tool
• Sider integration guide - Browser sidebar AI assistant

AI application platforms

• Dify integration guide - LLM application development platform
• Open WebUI integration guide - Self-hosted AI chat interface

Extra Usage - Automatic overage switching ​

When enabled, hitting your 5-hour or weekly subscription limit automatically switches traffic to a designated pay-as-you-go API Key so your work isn't interrupted; once quota recovers, calls switch back to your subscription key.

Key benefits ​

• Seamless switching — falls back to pay-as-you-go automatically, with no manual key swap
• Uninterrupted workflow — your development, coding, and chat sessions keep running
• Automatic recovery — returns to subscription billing as soon as quota is restored
• Full control — enable or disable it at any time

Setup steps ​

Go to the subscription management page and follow these steps:

Step 1: Enable Extra Usage

Find the Extra Usage section and click the toggle on the right.

Step 2: Select a pay-as-you-go API Key

In the Select a Key dialog that appears:

• Choose an existing pay-as-you-go API Key from the dropdown
• Or click Create new key to create a new pay-as-you-go API Key

点击Select to confirm.

Step 3: Configuration complete

Once enabled, the page shows details for the selected key, including its name and secret, status, creation and last-used timestamps, the amount spent so far, and an option to switch to a different key.

How it works ​

1. Normal usage — subscription quota (Flows) is consumed first
2. Quota exhausted — when the 5-hour or weekly window hits its limit, traffic switches to the designated pay-as-you-go API Key
3. Metered billing — calls during this period first consume any available Token Packs, then are charged to your account balance
4. Automatic recovery — once the subscription window resets, billing returns to your subscription

Using subscriptions in Studio Chat ​

Beyond using an API Key in developer tools, you can spend subscription quota directly in 开桥 Studio Chat on the web.

Under Billing Mode in the conversation settings, you can choose:

• Subscription — uses subscription quota (Flows) without touching your account balance
• Pay As You Go — charges your account balance based on actual usage

Upgrades & Downgrades ​

You can switch plans at any time during a subscription:

• Upgrades (for example, Starter → Max) take effect immediately, prorated against the time remaining in the current billing cycle
• Downgrades take effect at the end of the current cycle at no extra cost

Upgrade proration ​

When you upgrade, you only pay the price difference for the time remaining in the current cycle — not a full month's difference.

Δ = max(0, (P_new − P_old) × (T_rem / T))

In other words: amount due = plan price difference × share of the cycle remaining. If P_new ≤ P_old (not an upgrade), the amount due is 0.

Example — upgrading from Starter ($20/mo) to Max ($100/mo) with 15 days left in a 30-day cycle:

Δ = (100 − 20) × (15 / 30) = 80 × 0.5 = $40

You pay only the $40 difference to upgrade; when the new cycle starts, Max bills at its normal $100/month.

开桥 AI Insurance ​

开桥 is the first platform in the industry to insure AI output quality. The following situations are detected and compensated automatically:

How it works: daily automatic detection → problematic requests identified → credit compensation issued automatically the next day.

Refunds ​

To request a refund, see the refund policy for eligibility, calculation methods, and the request process.

FAQ ​

What's the difference between subscriptions and pay-as-you-go? ​

When does the quota reset? ​

Both windows are rolling:

• 5-hour window — starts counting from your first request and resets every 5 hours
• Weekly limit — starts counting from your first request and resets every 7 days

You can check remaining quota and reset times in real time on the subscription management page.

Can I upgrade or downgrade my plan? ​

Yes, at any time from the console. Upgrades take effect immediately (prorated for the remainder of the cycle), and downgrades take effect at the end of the current billing cycle. See Upgrades & Downgrades for details.

Can I use a subscription for production? ​

No. Subscriptions are intended only for non-production scenarios such as personal development, learning, and Vibe Coding. For production workloads, use Pay As You Go for better SLA, stability, and scalability.

Do Studio Chat and API calls share the same quota? ​

Yes. Studio Chat on the web and API calls draw from the same subscription quota pool, so plan your usage accordingly.

What payment methods are supported? ​

Stripe credit cards and Alipay.

Can I use multiple plans at the same time? ​

No. Only one subscription plan can be active per account. If you need a larger quota, upgrade to Max or Ultra.

Is a specific model included in my plan? ​

Go to the subscription pricing page, click View on the relevant plan card, and search for the model name in the dialog. See Viewing the models included in a plan for the full walkthrough.

Next Steps ​

• Read the quickstart guide for detailed API usage
• Follow the best practices to wire your subscription API Key into developer tools
• Learn about Pay As You Go, the billing model for production
• Visit usage analytics to monitor subscription quota in real time
• Check cost analysis to learn how to optimize spend