Chinese AI firm DeepSeek has released V4, a new flagship model that offers improved efficiency and longer context windows. The model is open-source and comes in two versions: V4-Pro for complex tasks and V4-Flash for speed and cost-effectiveness. DeepSeek claims V4-Pro rivals leading closed-source models like Anthropic's Claude-Opus-4.6 and OpenAI's GPT-5.4 on various benchmarks, while significantly outperforming other open-source alternatives. AI
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IMPACT Provides developers with a powerful, cost-effective open-source alternative to leading proprietary models for complex tasks.
RANK_REASON Release of a new open-source model from a notable Chinese AI lab with competitive benchmark performance.