Viv Fast vs Qwen3.8 Flash
Too close to call on our weighted score (Qwen3.8 Flash 76, Viv Fast 75). The right pick depends on what you value most.
VivgridViv Fast
75/100- ECI—
- Price$0.13 / $0.40
- Context1M
Alibaba (Qwen)Qwen3.8 Flash
76/100- ECI—
- Price$0.15 / $0.47
- Context1M
Add a model
Make it a three-way comparison.
Too close to call
It is close. Our weighted score puts them within 1 points (Qwen3.8 Flash 76/100, Viv Fast 75/100), so choose by what matters most for your work: Viv Fast on price. 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 priceViv FastViv Fast $0.198 · Qwen3.8 Flash $0.23 per 1M tokens (3:1 blend)
- Longest contextAbout the sameViv Fast 1,000,000 · Qwen3.8 Flash 1,000,000 tokens
- Widest inputsQwen3.8 FlashViv Fast: Text, Images · Qwen3.8 Flash: Text, Images, Video
- Self-hostingNo open weightsBoth are available only through APIs
| Measure | Weight | Viv Fast | Qwen3.8 Flash |
|---|---|---|---|
| Price | 50% | 83 | 80 |
| Inputs & features | 30% | 70 | 80 |
| Context window | 20% | 60 | 60 |
| Overall | 100% | 75/100 | 76/100 |
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 | Viv FastVivgrid | Qwen3.8 FlashAlibaba (Qwen) |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | — | — |
| ECI rank | — | — |
| Price per million tokens | ||
| Input | $0.13 (best) | $0.15 |
| Output | $0.40 (best) | $0.47 |
| Cached input | $0.05 | $0.016 (best) |
| Blended (3:1) | $0.198 (best) | $0.23 |
| Long-context rate | Same rate | Same rate |
| Price source | Official Vivgrid API | Official Alibaba API |
| Limits | ||
| Context window | 1,000,000 tokens | 1,000,000 tokens |
| Max output | 256,000 tokens (best) | 131,072 tokens |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | Yes | Yes |
| PDFs | No | No |
| Audio | No | No |
| Video | No | Yes |
| Reasoning | Yeslow · high · max | Yeslow · medium · xhigh |
| Tool calling | Yes | Yes |
| Structured output | Yes | Yes |
| Availability | ||
| Weights | Proprietary | Proprietary |
| API model ID | viv-fast | qwen3.8-flash |
| API providers | 1 | 23 (best) |
| Released | Sep 21, 2026 | Aug 26, 2026 |
| Knowledge cutoff | Sep 2026 | — |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- Viv Fast$2.10
- Qwen3.8 Flash$2.44
Which should you choose?
Which is better: Viv Fast or Qwen3.8 Flash?
It is close. Our weighted score puts them within 1 points (Qwen3.8 Flash 76/100, Viv Fast 75/100), so choose by what matters most for your work: Viv Fast on price. 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, Viv Fast or Qwen3.8 Flash?
Viv Fast is cheaper at $0.13 input / $0.40 output per million tokens (official Vivgrid API price). Qwen3.8 Flash costs $0.15 input / $0.47 output per million tokens (official Alibaba API price). At a typical mix of three input tokens to one output token, that is $0.198 per million tokens for Viv Fast versus $0.23 for Qwen3.8 Flash (1.2× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers both models yet. Viv Fast has not been scored yet and Qwen3.8 Flash has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Viv Fast and Qwen3.8 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?
Viv Fast and Qwen3.8 Flash share the same 1,000,000-token context window. Maximum output per response: Viv Fast up to 256,000, Qwen3.8 Flash up to 131,072 tokens.
Which can read images, PDFs, audio or video?
Viv Fast accepts text and images; Qwen3.8 Flash accepts text, images and video. Qwen3.8 Flash handles the widest range of inputs.
Are any of these open source?
No. Viv Fast and Qwen3.8 Flash are proprietary and only available through APIs and apps.
Which is newer?
Viv Fast is the newest, released Sep 21, 2026. Qwen3.8 Flash came out Aug 26, 2026. Knowledge cutoff: Viv Fast Sep 2026.
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.
