DeepSeek V4 Flash + Pro: Open Source 1M Context, $0.14/M Tokens
China's DeepSeek released preview versions of V4 Flash and V4 Pro on April 24, 2026 — exactly one year after the DeepSeek release that "rattled Silicon Valley." V4-Pro targets demanding tasks; V4-Flash is optimized for speed and cost. Key specs: 1 million token context window (full codebase in one prompt), Hybrid Attention Architecture (improves long-conversation memory), strong coding benchmark performance. V4-Flash priced at $0.14/M input tokens and $0.28/M output — undercutting GPT-5.4 Nano, Gemini 3.1 Flash, Claude Haiku 4.5. Performance: V4-Pro-Max outperforms open-source peers and some closed models on reasoning benchmarks, but trails GPT-5.4 and Gemini 3.1 Pro in knowledge tests — analysts estimate a 3-6 month gap from frontier. Separately: Tencent and Alibaba are in talks to invest in DeepSeek (first external funding round), with Tencent proposing a 20% stake.
For AI tool buyers: DeepSeek V4's pricing ($0.14/M) creates renewed pressure on "which model does this product run on?" as a procurement question. When capable open-source models are 35-200x cheaper than frontier alternatives, vendors must justify premium model use with reliability and task-specific performance data. For AI GTM operators: the 1M token context window means entire sales call archives, full CRM histories, or complete ad creative libraries can be analyzed in a single prompt — without chunking. For B2B SaaS: the open-source cost pressure argument is again active. Sellers need a clear answer to "why aren't you using DeepSeek?" The Tencent/Alibaba investment talks signal DeepSeek is graduating from research lab to funded frontier competitor.
- "DeepSeek V4 is $0.14/M tokens. Frontier models are $5-30/M. 'Which model does this run on?' is now a procurement question."
- "1 million token context: you can send an entire codebase, call archive, or creative library as one prompt. That changes what analysis is possible."
- "DeepSeek returns a year later with V4. The open-source cost floor keeps dropping. Every AI vendor's pricing story just got harder."
- "Tencent + Alibaba investing in DeepSeek: the lab-to-funded-competitor graduation. This is what China's AI arc looks like."