DeepSeek quietly ships V4 Pro GA, claims near-parity with Claude Fable 5

DeepSeek released the finished DeepSeek-V4-Pro-0813 build on Wednesday with no announcement, replacing the April preview. Its benchmark table puts Anthropic's Claude Fable 5 ahead by an average of 5.3% across nine agent benchmarks, while Fable 5 costs $10/$50 per million input/output tokens versus V4 Pro's $0.435/$0.87.
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