Qwen3.8 Flash vs DeepSeek V4 Flash
Qwen3.8 Flash (Alibaba Cloud) costs $0.15 per million input tokens and $0.47 per million output tokens; DeepSeek V4 Flash (DeepSeek) costs $0.30 and $1.20. Qwen3.8 Flash is 2.3× cheaper for a typical 3:1 input-to-output mix. DeepSeek V4 Flash has the larger context window (1M vs 992K tokens).
| Qwen3.8 Flash | DeepSeek V4 Flash | |
|---|---|---|
| Provider | Alibaba Cloud | DeepSeek |
| Input / 1M tokens | $0.15 | $0.30 |
| Output / 1M tokens | $0.47 | $1.20 |
| Cached input / 1M | $0.016 | $0.006 |
| Blended (3:1) | $0.23 | $0.52 |
| Context window | 992K | 1M |
| Max output | 131K | 393K |
| Vision | Yes | Yes |
| Tool use | Yes | Yes |
| Reasoning | Yes | Yes |
| Listed since | Sep 20, 2026 | Jun 20, 2026 |
Cost per 1,000 requests
| Workload | Qwen3.8 Flash | DeepSeek V4 Flash |
|---|---|---|
| Chatbot reply2,000 input + 500 output tokens | $0.54 | $1.20 |
| RAG / search answer8,000 input + 700 output tokens | $1.53 | $3.24 |
| Long-document summary100,000 input + 2,000 output tokens | $15.94 | $32.40 |
Blended price history
Blended = (3 × input + output) ÷ 4, per million tokens. Each line starts when the model first appeared in the price list.
The companies
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List prices for each provider's own API (USD), taken daily from LiteLLM's public model price list. Batch, caching and committed-use discounts aren't reflected. Price alone says nothing about output quality; check benchmarks and your own evaluations before switching.