DeepSeek V4-Pro 75% Price Cut Goes Permanent: What It Means for Developers (May 2026)
DeepSeek made its 75% V4-Pro discount permanent on May 22, 2026. Standing rates: $0.435/M input, $0.87/M output. Here is what changed, the new cost-per-quality math vs Claude Opus 4.7 and GPT-5.5, and the migration code.