Prompts that actually work

DeepSeek V4 Pro at $0.44/$0.87/M (discounted) is the most cost-efficient coding model available in July 2026 — 7-17x cheaper than Western frontier alternatives. V4 Flash at $0.14/$0.28/M is ideal for high-volume routing and classification tasks. These prompts are optimised for the DeepSeek API and the Anthropic Messages endpoint (now available at api.deepseek.com/anthropic). Important: migrate your deepseek-chat alias to deepseek-v4-flash before July 24 at 15:59 UTC.

DeepSeek V4 Pro with thinking mode ON is one of the most cost-efficient models for research tasks that require extended reasoning — literature review synthesis, multi-step analysis, and structured comparison. At $0.44/$0.87/M (discounted), it delivers frontier-class reasoning at 7-17x lower cost than Western alternatives. Important: migrate from deepseek-chat to deepseek-v4-flash before July 24 at 15:59 UTC.