Overview
- DeepSeek, which posted an open-source pre-release Friday, introduced two tiers called V4-Pro and the lower-cost V4-Flash.
- The company says V4 handles a one million character context in a single pass, letting it answer on hundreds of pages without losing place.
- DeepSeek claims it made long-context work faster and cheaper than before, which could cut compute costs for tasks like large document review.
- The firm presents V4 as multimodal and says it runs on Huawei’s latest chips, a notable option as China lacks access to top Nvidia parts.
- The launch followed OpenAI’s GPT-5.5 reveal hours earlier, and independent tests of V4’s speed, cost, and output quality have not yet appeared.