📝 Written ● Beginner

DeepSeek

Fast, affordable, and capable. Connect DeepSeek V4 to LingCode for rapid prototyping and bulk work.

Why use DeepSeek?

DeepSeek is known for:

Speed: Fastest HTML generation. Designs complete in seconds.
Cost: 10x cheaper than Claude. Perfect for experimentation and bulk work.
Quality: Strong for design tasks. Not as polished as Claude, but very capable.
Reliability: Consistent output, rarely hallucinates.

Best for: Quick prototypes, rapid iteration, bulk builds, learning, cost-sensitive work.

Getting started

Create a DeepSeek account

Go to platform.deepseek.com and sign up or log in. You'll need:

Email address
Password
Billing information (add a payment method)

Create your first API key

Once logged in, go to "API Keys" or "Keys" in the left sidebar. Click "Create" or "+ New". You'll get a key that looks like: sk-...

Keep this key safe. Treat it like a password. Never commit it to git or share it publicly.

Adding DeepSeek to LingCode

Open the playground and configure

Go to /try.html and scroll to the bottom. Click "Advanced" to reveal provider configuration.

Paste your API key

Find the "DeepSeek" row. Click the input field and paste your API key (sk-...).

Click "Save" and the key is stored securely in your browser (never sent to LingCode servers).

Testing your connection

Run a test prompt

Type a simple prompt:

Build a landing page for a coffee shop with a hero, menu preview, and contact form.

Click the "DeepSeek" provider button to select it, then click "Send". If DeepSeek responds with a complete HTML page in seconds, you're connected! ✓

DeepSeek pricing

As of 2026, DeepSeek is extremely affordable:

A typical landing page: ~$0.01–0.05
A pitch deck: ~$0.02–0.05
A dashboard: ~$0.05–0.10

Compare to Claude (~$0.10–0.50 per build). DeepSeek costs 10x less.

DeepSeek models

DeepSeek offers two versions of V4:

V4-Flash: Fast, cheap, good quality. Recommended for most tasks.
V4-Pro: Slightly better quality, slightly slower. Use for complex design work.

LingCode automatically selects the right version based on your prompt. You don't need to choose manually.

Practical tip: Try V4-Flash first. It's fast and cheap. If you need higher quality, upgrade to V4-Pro for specific important builds.

When to use DeepSeek

Rapid prototyping: Test ideas quickly without spending much
Bulk work: Building 10+ designs? Use DeepSeek for cost
Learning: Experimenting with LingCode? DeepSeek is affordable
Quick designs: Landing pages, simple dashboards, quick mockups

When to use Claude instead

Premium deliverables: Client work, investor decks, high-stakes designs
Complex reasoning: Multi-step or intricate design logic
When quality > cost: The best result is worth paying more

Workflow: DeepSeek + Claude

A smart workflow for important work:

Prototype with DeepSeek (fast, cheap)
Once you've nailed the concept, regenerate with Claude (polish)
Compare and pick the better one
Export and use

Troubleshooting

Q: I get an "Invalid API key" error

A: Double-check that you've copied the full key from DeepSeek's console. Avoid extra spaces.

Q: DeepSeek is slow / quota exceeded

A: Check your DeepSeek account dashboard at platform.deepseek.com. If you've hit rate limits, wait a few minutes. If you've run out of credits, add more funds to your billing account.

Q: Which DeepSeek model am I using?

A: LingCode automatically selects V4-Flash or V4-Pro based on your task. You don't need to choose manually.

Q: Can I use both DeepSeek and Claude?

A: Yes. Set up both, then in the playground select both providers and run your prompt on both to compare results.