VSCode + Continue + DeepSeek: AI Coding Without GPT-4o Prices

[chawkian]

VSCode + Continue + DeepSeek: AI Coding Without the GPT-4o Price Tag

Continue is the most popular open-source AI coding extension for VSCode. It supports tab autocomplete and a chat sidebar, working with any OpenAI-compatible API.

Pairing Continue with DeepSeek V4 through AIWave gives you the same coding assistant experience as using GPT-4o — but at a fraction of the cost.

Why Continue + DeepSeek?

Continue has two main features:

• Tab autocomplete: Suggests completions as you type (like Copilot)
• Chat sidebar: Ask questions about your codebase, generate code, explain errors

DeepSeek V4 Flash is fast enough for real-time autocomplete (sub-second latency from most regions to AIWave's Singapore servers) and strong enough for complex coding questions.

Installation

1. Install Continue from the VSCode Marketplace
2. Get an API key from AIWave (free $1 credit on signup)
3. Configure (see below)

Configuration

Open Continue's config file (~/.continue/config.yaml or via Ctrl+Shift+P > "Continue: Open Config"):

models:
  - name: DeepSeek V4 Flash
    provider: openai
    model: deepseek-chat
    apiBase: https://aiwave.live/v1
    apiKey: ***
    roles:
      - autocomplete
      - chat

  - name: DeepSeek V4 Pro
    provider: openai
    model: deepseek-reasoner
    apiBase: https://aiwave.live/v1
    apiKey: ***
    roles:
      - chat

This uses V4 Flash for autocomplete (speed-critical) and V4 Pro for chat (quality-critical). Both use the same API key.

Autocomplete vs Chat: Different Needs

	Autocomplete	Chat
Latency needed	< 500ms	1-5s acceptable
Typical input	500-2K tokens	2K-20K tokens
Typical output	50-200 tokens	500-4K tokens
Best DeepSeek model	V4 Flash	V4 Pro

Autocomplete fires on every keystroke pause — high volume, tiny per-request cost. Chat fires on explicit action with longer contexts.

Cost Estimate

Assumptions: 300 autocomplete calls/day (500 in + 100 out) + 20 chat messages/day (4K in + 2K out), 22 work days/month.

Component	Daily	Monthly (22 days)
Autocomplete (V4 Flash)	$0.0028	$0.06
Chat (V4 Pro)	$0.0432	$0.95
Total	$0.046	$1.01

Same workload with GPT-4o: ~$15/month.

Tips

Use @ mentions: Type @ followed by a filename to include it in chat context. @folder/ includes entire directories.

Reduce autocomplete latency: If autocomplete feels slow, use V4 Flash exclusively.

Context management: DeepSeek V4 supports 1M tokens. Continue auto-manages context, but use /clear to reset if responses degrade.

Troubleshooting

Autocomplete not triggering: Verify the model has the autocomplete role. Check VSCode: Editor: Accept Suggestion On should be enabled.

API errors: Confirm apiBase ends with /v1. Test with curl to AIWave's endpoint.

Model name mismatch: Use deepseek-chat for V4 Flash and deepseek-reasoner for V4 Pro. See models page.

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Continue gives you a Copilot-like experience in VSCode. DeepSeek through AIWave makes it affordable — about $1/month for heavy daily use. The $1 free credit covers your first month while you evaluate.

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AIWave - 50+ AI models, one API key. $1 free credit.

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Resources

• AIWave pricing
• AIWave developer blog
• AIWave Python SDK