WorldofAI: DeepSeek V4.1 Flash Is INSANELY GOOD! Fast, Cheap, Powerful! (Fully Tested)

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DeepSeek V4.1 Flash just dropped, and it might be one of DeepSeek’s most exciting releases yet. In this video, I fully test the new model across coding, 3D simulations, Three.js environments, games, agentic tasks, vision, and more to see just how capable it really is.

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DeepSeek V4.1 Flash is ridiculously fast, reaching around 300–400+ tokens per second in some tests, while delivering surprisingly strong results at a very competitive price. We test everything from Minecraft and Mario Kart-style games to 3D environments, rocket simulations, autonomous dungeon games, exploded camera views, and more.

It’s not perfect—the model can overthink, spend too much time testing, and occasionally struggle with instruction following—but this feels like a major improvement over previous DeepSeek Flash releases.

Is DeepSeek finally back? Let’s find out.

🔥 In this video:
DeepSeek V4.1 Flash full testing
DeepSeek V4.1 Flash vs other frontier models
Coding & agentic benchmarks
Three.js & 3D generation
Vision capabilities
Game development tests
Speed & token generation
Pricing & performance
Strengths & weaknesses
Final verdict

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