DeepSeek V4: What's Inside, How It Compares, and Where It Actually Wins
DeepSeek V4 shipped on April 24, 2026 — four days after Moonshot's Kimi K2.6, one day after OpenAI's GPT-5.5. Two MIT-licensed models, both 1M-context: V4-Pro at 1.6T total / 49B active, and V4-Flash at 284B / 13B active. The headline number is the price: $3.48 per million output tokens for V4-Pro vs $25 for Claude Opus 4.7 and $30 for GPT-5.5. (DeepSeek is also running a launch promo at 75% off — $0.87/M output — through May 5, 2026, which widens the gap further during the evaluation window.)...
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