Qwen3 Next 80B vs DeepSeek V4 Flash
Alibaba (Qwen) against DeepSeek, costed on the same three workloads. Qwen3 Next 80B is cheaper on all three workloads.
Qwen3 Next 80B has been retired by its vendor. Its column shows the last rates it was sold at, kept for reference.
Run this comparison on your own numbers
Monthly bill, side by side
| Workload | Qwen3 Next 80B | DeepSeek V4 Flash | Difference |
|---|---|---|---|
| Support chatbot 2,500 six-turn conversations a day |
$786 | $1,087 | $300 (+38%) |
| Document summarizer 1,000 single-shot summaries a day |
$83.70 | $139 | $54.90 (1.7×) |
| Coding agent 200 twelve-turn sessions a day |
$502 | $788 | $286 (1.6×) |
No prompt caching and no batch discount on either side, so the comparison is like for like. Both figures assume 30 days a month.
The rate cards
| Qwen3 Next 80B | DeepSeek V4 Flash | |
|---|---|---|
| Input, per 1M tokens | $0.15 | $0.3 |
| Output, per 1M tokens | $1.2 | $1.2 |
| Cached input | not published | $0.006 |
| Context window | 262K | 1M |
| Maximum output | 66K | 384K |
| Reasoning model | yes | yes |
| Vision | no | no |
Beyond the price
- DeepSeek V4 Flash reads up to 1M tokens of context in one request; Qwen3 Next 80B stops at 262K.
- DeepSeek V4 Flash can write up to 384K tokens in one response, against 66K for Qwen3 Next 80B.
- Only DeepSeek V4 Flash publishes a cached-input rate, which cuts the cost of resending a long, unchanging prompt.
Run this comparison on your own numbers
Full detail: Qwen3 Next 80B pricing · DeepSeek V4 Flash pricing
More comparisons
Other head-to-heads that include Qwen3 Next 80B or DeepSeek V4 Flash.
- Qwen3 Next 80B vs Nova 2 Lite
- Qwen3 Next 80B vs Gemini 3.5 Flash-Lite
- Qwen3 Next 80B vs GPT-5.6 Luna
- DeepSeek V4 Flash vs Nova 2 Lite
- DeepSeek V4 Flash vs Claude Haiku 5.5
- DeepSeek V4 Flash vs Gemini 3.5 Flash-Lite
Common questions
Which is cheaper, Qwen3 Next 80B or DeepSeek V4 Flash?
Qwen3 Next 80B is cheaper on all three workloads.
How much would Qwen3 Next 80B and DeepSeek V4 Flash cost each month?
On PromptSpend's standard workloads, per month: support chatbot: Qwen3 Next 80B $786, DeepSeek V4 Flash $1,087 (Qwen3 Next 80B is cheaper by $300); document summarizer: Qwen3 Next 80B $83.70, DeepSeek V4 Flash $139 (Qwen3 Next 80B is cheaper by $54.90); coding agent: Qwen3 Next 80B $502, DeepSeek V4 Flash $788 (Qwen3 Next 80B is cheaper by $286). No prompt caching and no batch discount is assumed.
How do Qwen3 Next 80B and DeepSeek V4 Flash differ apart from price?
DeepSeek V4 Flash reads up to 1M tokens of context in one request; Qwen3 Next 80B stops at 262K. DeepSeek V4 Flash can write up to 384K tokens in one response, against 66K for Qwen3 Next 80B. Only DeepSeek V4 Flash publishes a cached-input rate, which cuts the cost of resending a long, unchanging prompt.