Home / Compare / DeepSeek V4 Flash 0731 vs Qwen3.8 Flash

DeepSeek V4 Flash 0731 vs Qwen3.8 Flash

For a typical chat reply (2,000 tokens in, 400 out), Qwen3.8 Flash costs 2.9× as much as DeepSeek V4 Flash 0731: $0.488 against $0.17 per 1,000 requests at list price on 2026-09-28.

DeepSeek V4 Flash 0731Qwen3.8 Flash
Input, per 1M tokens$0.021$0.15
Output, per 1M tokens$0.32$0.47
Context window1.31M1M
Classification or routing (600 tokens in, 10 out), per 1,000$0.0158$0.0947
Chat reply (2,000 in, 400 out), per 1,000$0.17$0.488
Retrieval-augmented answer (8,000 in, 500 out), per 1,000$0.328$1.44
Confidence signalyesyes
Tool callingyesyes
BANKING77, correct of 400298316

Which one should carry your traffic?

If DeepSeek V4 Flash 0731 answers your requests as well as Qwen3.8 Flash, moving that traffic saves 65% on chat-shaped requests. Averages cannot tell you whether it does for your requests. DeepSeek V4 Flash 0731 exposes a confidence signal, so Gimbix can let it answer first and hand unsure cases to Qwen3.8 Flash.

DeepSeek V4 Flash 0731 profile · Qwen3.8 Flash profile · Measure it on your traffic