Qwen3.8 Max Preview vs DeepSeek V4 Flash
DeepSeek V4 Flash comes out ahead, 68 to 47 on our weighted score, and it is the cheaper option too.
Alibaba (Qwen)Qwen3.8 Max Preview
47/100- ECI—
- Price$2.00 / $6.00
- Context1M
- Our pick
DeepSeekDeepSeek V4 Flash
68/100- ECI146.1
- Price$0.14 / $0.28
- Context1M
Add a model
Make it a three-way comparison.
DeepSeek V4 Flash is our pick
DeepSeek V4 Flash is the better all-round choice, scoring 68/100 against Qwen3.8 Max Preview (47). It leads on price. Qwen3.8 Max Preview wins on inputs & features. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
- CapabilityNot enough dataNo independent benchmark covers every model here yet
- Lowest priceDeepSeek V4 FlashDeepSeek V4 Flash $0.175 · Qwen3.8 Max Preview $3.00 per 1M tokens (3:1 blend)
- Longest contextAbout the sameQwen3.8 Max Preview 1,000,000 · DeepSeek V4 Flash 1,000,000 tokens
- Widest inputsQwen3.8 Max PreviewQwen3.8 Max Preview: Text, Images, Video · DeepSeek V4 Flash: Text
- Self-hostingDeepSeek V4 FlashPublishes downloadable weights
| Measure | Weight | Qwen3.8 Max Preview | DeepSeek V4 Flash |
|---|---|---|---|
| Price | 50% | 27 | 86 |
| Inputs & features | 30% | 70 | 45 |
| Context window | 20% | 60 | 60 |
| Overall | 100% | 47/100 | 68/100 |
Left out because at least one model lacks the data: capability. The remaining weights were rescaled.
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | Qwen3.8 Max PreviewAlibaba (Qwen) | DeepSeek V4 FlashDeepSeek |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | — | 146.1 |
| ECI rank | — | #71 of 148 |
| Price per million tokens | ||
| Input | $2.00 | $0.14 (best) |
| Output | $6.00 | $0.28 (best) |
| Cached input | — | — |
| Blended (3:1) | $3.00 | $0.175 (best) |
| Long-context rate | Same rate | Same rate |
| Price source | Median of 6 providers | Median of 42 providers |
| Limits | ||
| Context window | 1,000,000 tokens | 1,000,000 tokens |
| Max output | 131,072 tokens | 384,000 tokens (best) |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | Yes | No |
| PDFs | No | No |
| Audio | No | No |
| Video | Yes | No |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Structured output | No | Yes |
| Availability | ||
| Weights | Proprietary | Open |
| API model ID | — | — |
| API providers | 6 | 48 (best) |
| Released | Jul 19, 2026 | Apr 24, 2026 |
| Knowledge cutoff | — | May 2025 |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- Qwen3.8 Max Preview$32.00
- DeepSeek V4 Flash$1.96
Which should you choose?
Which is better: Qwen3.8 Max Preview or DeepSeek V4 Flash?
DeepSeek V4 Flash is the better all-round choice, scoring 68/100 against Qwen3.8 Max Preview (47). It leads on price. Qwen3.8 Max Preview wins on inputs & features. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
Which is cheaper, Qwen3.8 Max Preview or DeepSeek V4 Flash?
DeepSeek V4 Flash is cheaper at $0.14 input / $0.28 output per million tokens (median across 42 API providers). Qwen3.8 Max Preview costs $2.00 input / $6.00 output per million tokens (median across 6 API providers). At a typical mix of three input tokens to one output token, that is $0.175 per million tokens for DeepSeek V4 Flash versus $3.00 for Qwen3.8 Max Preview (17× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers both models yet. Qwen3.8 Max Preview has not been scored yet and DeepSeek V4 Flash has an ECI of 146.1.
Which is better for coding?
There are no published SWE-bench Verified results for Qwen3.8 Max Preview and DeepSeek V4 Flash yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. Both support tool calling for agent workflows.
Which has the bigger context window?
Qwen3.8 Max Preview and DeepSeek V4 Flash share the same 1,000,000-token context window. Maximum output per response: Qwen3.8 Max Preview up to 131,072, DeepSeek V4 Flash up to 384,000 tokens.
Which can read images, PDFs, audio or video?
Qwen3.8 Max Preview accepts text, images and video; DeepSeek V4 Flash accepts text. Qwen3.8 Max Preview handles the widest range of inputs.
Are any of these open source?
DeepSeek V4 Flash publishes its weights and can be self-hosted; Qwen3.8 Max Preview is proprietary.
Which is newer?
Qwen3.8 Max Preview is the newest, released Jul 19, 2026. DeepSeek V4 Flash came out Apr 24, 2026. Knowledge cutoff: DeepSeek V4 Flash May 2025.
How do you decide the winner?
Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Oct 4, 2026.
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