DeepSeek has slashed prices on its artificial intelligence models, including its latest V4 which now costs 97 per cent less than OpenAI products, potentially triggering a price war in the highly competitive AI market.DeepSeek said on Sunday that it would reduce prices for “input cache hits” – where previously processed context was reused – for application programming interface (API) users to one-tenth of the original level, bringing the minimum input cost down to about US$0.14 per million...