DeepSeek V4 Pro cuts input token price by 75%, now 81% cheaper than Claude Sonnet

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DeepSeek quietly slashed the price of its V4 Pro model on June 4, 2026, reducing input tokens from $2.19 to $0.55 per million and output tokens from $8.76 to $2.19 per million. The change was spotted by developers on AI Discord before spreading through OpenRouter and API aggregators within 24 hours. The new pricing makes V4 Pro 81% cheaper than Claude Sonnet 4.6 on input and 72% cheaper than GPT-4.1, positioning it as the most affordable frontier-class model with strong benchmarks. V4 Pro scores 74.2% on SWE-bench and 89.7% on HumanEval, making it competitive with GPT-4.1, though it trails Claude Opus 4.8 on complex reasoning tasks. The cost advantage is most significant for high-volume workloads like batch document processing and automated code review, where monthly inference bills could drop by 60–70%.

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