
DeepSeek V4-Pro and V4-Flash landed the same day. For the first time, developers have three genuinely competitive options from three different labs — each with distinct strengths, pricing, and licensing models. The headline numbers: V4-Pro output costs $3.48/M tokens vs $25/M for Opus 4.7 and $30/M for GPT-5.5. But cheaper doesn't mean better.
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