DeepSeek cuts V4 model prices by 97% below OpenAI's GPT-5.5, with additional 75% discount through May 5

DeepSeek reduced prices for input cache hits to one-tenth of the original level, bringing minimum input cost to about US$0.14 per million tokens, effective immediately and permanent. The company also offered an additional 75 per cent discount on the V4-Pro model through May 5.

DeepSeek-V4-Pro now costs US$0.0036 per million input tokens, compared with OpenAI's GPT-5.5 at US$0.5 per million cached input tokens. Given that input is typically three times longer than output, the cost per conversation on GPT-5.5 is 32 times that of DeepSeek-V4.

The V4 family consists of the Pro and Flash variants, with V4-Pro positioned as the company's most advanced offering to date. DeepSeek V4 is one of the few models to break the trend of price increases seen in recent releases from competitors including Kimi K2.6 and Zhipu GLM-5.1.