DeepSeek Leads on Price and Speed as Chinese AI APIs Face Head-to-Head Test

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A software architect with a decade of production system experience conducted weeks of stress testing on four major Chinese AI APIs — DeepSeek, Qwen, Kimi, and GLM — evaluating p99 latency, failover behavior, and cost per million tokens under real workloads. DeepSeek's V4 Flash model emerged as the top price-performance pick, delivering around 60 tokens per second with stable tail latency at just $0.25 per million output tokens. Qwen, backed by Alibaba, stood out for offering the widest range of model sizes, including budget options as cheap as $0.01 per million tokens. Kimi commanded the highest prices at $3.00–$3.50 per million tokens but justified the cost with superior performance on reasoning-heavy tasks. GLM, developed by Zhipu AI, distinguished itself with the strongest Chinese-language quality and multimodal support not matched by the other three providers.

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