DeepSeek-V4-Flash-0731 vs Qwen3.8 Flash: Specs & Benchmark Comparison
DeepSeek-V4-Flash-0731 is developed by DeepSeek, while Qwen3.8 Flash comes from Alibaba. DeepSeek-V4-Flash-0731 was released in July 2026, and Qwen3.8 Flash followed a month later in August 2026. DeepSeek-V4-Flash-0731 is the larger model at roughly 304 billion parameters, against 125 billion for Qwen3.8 Flash.
We have 4 benchmark results for DeepSeek-V4-Flash-0731 and 22 benchmark results for Qwen3.8 Flash, but they overlap on a single test: Toolathlon, where Qwen3.8 Flash scores 73.5% against 70.0%.
On price the two are close: DeepSeek-V4-Flash-0731 costs $0.14 per million input tokens and $0.28 per million output tokens, Qwen3.8 Flash $0.15 and $0.47. Both accept a context window of about 1M tokens. DeepSeek-V4-Flash-0731 accepts text as input, while Qwen3.8 Flash accepts text, images, and video. On tooling, only DeepSeek-V4-Flash-0731 supports function calling and only DeepSeek-V4-Flash-0731 offers structured output.
| Characteristic | DeepSeek-V4-Flash-0731 | Qwen3.8 Flash |
|---|---|---|
| Company | DeepSeek | Alibaba |
| Release Date | July 31, 2026 | August 26, 2026 |
| Parameters | 304B | 125B |
| Multimodal | No | Yes |
| Context (input) | 1.0M | 1.0M |
| Context (output) | 393K | 131K |
| Input Price / 1M | $0.14 | $0.15 |
| Output Price / 1M | $0.28 | $0.47 |
| Average Score | 74.8% | 68.5% |
| Benchmarks | ||
| Toolathlon | 70.0% | 73.5% |
Visual Benchmark Comparison
Verdict
Qwen3.8 Flash leads in 2 out of 4 comparison categories.
Both models show comparable average scores: DeepSeek-V4-Flash-0731 — 0.7, Qwen3.8 Flash — 0.7.
DeepSeek-V4-Flash-0731 is 1.5x cheaper: input $0.14/1M vs $0.15/1M tokens.
Qwen3.8 Flash supports a larger context: 1M vs 1M tokens.
Qwen3.8 Flash is newer: released 8/26/2026 vs 7/31/2026.
More About These Models
Related Comparisons
Frequently Asked Questions
Which is better for coding — DeepSeek-V4-Flash-0731 or Qwen3.8 Flash?
Which model is cheaper — DeepSeek-V4-Flash-0731 or Qwen3.8 Flash?
Which has a larger context window — DeepSeek-V4-Flash-0731 or Qwen3.8 Flash?
The DeepSeek-V4-Flash-0731 and Qwen3.8 Flash comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the DeepSeek-V4-Flash-0731 or Qwen3.8 Flash page. See also the complete list of AI model comparisons.