Originally published at news.skila.ai DeepSeek shipped V4-Pro and V4-Flash on April 24, 2026. Open weights. MIT license. One-million-token context window. On SWE-bench Verified it scores 80.6%. Claude Opus 4.6 scores 80.8%. The gap is 0.2 points. Output tokens cost $3.48 per million. Anthropic charges $25 for Opus 4.6 output. OpenAI charges $30 for GPT-5.5 output. That is not a discount. That is a category break. If you built your AI cost model last month on closed-frontier APIs, it just broke. Here is exactly what DeepSeek shipped, what the benchmarks actually say, and what you should change about your stack this week. What Actually Shipped Two models, both released under MIT license on Hugging Face: DeepSeek V4-Pro. 1.6 trillion total parameters. 49 billion active per token via Mixture-of-Experts. Pre-trained on 33 trillion tokens. Context window: 1,048,576 tokens. API pricing: $0.50 per million input, $3.48 per million output. DeepSeek V4-Flash.…