Julian Goldie SEO: How to use DeepSeek V4.1 Flash API for FREE!

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DeepSeek V4.1 Flash is out — and you can run it 100% free via API with a 1M token context window. In this video I show you how to grab a free API key, wire it into your coding setup, and put its frontier-level speed and output to the test.

00:00 Intro – DeepSeek V4.1 Flash is free (even via API)
00:14 Get Your Free API Key – sign up at tokenharbor.ai
00:50 Find the Model – free tier + 1M token context
01:06 Connect to Your Setup – add it as a provider
01:56 Live Demos – game, web design & app builds
02:33 Benchmarks – how it stacks up vs frontier models
03:38 Code With It – running it inside the harness
03:53 Build Example – SEO agency landing page
04:09 Plug It Anywhere – use it in any agentic tool
04:43 Wrap-Up & Resources