[DeepSeek V4 Pro Discount Officially Extended, Promotion Runs Until May 31 This Year] According to Golden Finance, on April 28, the official website of DeepSeek 'quietly' updated its API documentation. The relevant page shows that the flagship large model DeepSeek-V4-Pro's 75% discount promotion will be extended until 11:59 PM on May 31 this year (previously, the promotion was set to end on May 6). Currently, the input price (cache hit) for DeepSeek-V4-Pro is as low as 0.025 yuan (per million tokens), the input price (cache miss) is 3 yuan, and the output price is 6 yuan. (Dongxin News Agency)