Qwen3.5-Plus vs Qwen3.8-Flash
Alibaba Cloud Model Studio (≤128K tier) vs Alibaba Cloud Model Studio · prices and specs, line by line
Qwen3.5-Plus (Alibaba Cloud Model Studio (≤128K tier)) vs Qwen3.8-Flash (Alibaba Cloud Model Studio), side by side: input/output/cache-hit prices, time-based pricing, context window, modalities and a fixed-assumption monthly cost. Green marks the better row.
| Dimension | Qwen3.5-Plus | Qwen3.8-Flash |
|---|---|---|
| Vendor / channel | Alibaba Cloud Model Studio (≤128K tier) | Alibaba Cloud Model Studio |
| Context window | 1000K | 1000K |
| Modalities | Text | Text, Image understanding, Video understanding |
| Features | Balanced general use, Open-source ecosystem | Latest lightweight, 1M-token context |
| Input (cache miss) | ¥0.8 | ¥0.8 |
| Output | ¥4.8 | ¥2.7 |
| Cache hit | Not published | ¥0.1 |
| Time-based pricing | ||
| Est. monthly cost* | ¥16.32 | ¥10.02 |
| Price source | Alibaba Cloud Model Studio pricing | Alibaba Cloud Model Studio — Qwen3.8-Flash model page |
| Verified | 2026-09-18 | 2026-10-28 |
* Fixed assumptions for the example monthly cost: 100 calls/day · 2,000 input / 800 output tokens per call · off-peak rates · 30% cache hit rate · 30-day month — the same formula and defaults as the cost calculator. USD models are converted to CNY at the reference rate for comparison (see summary). Costs within display precision are marked tied; neither side is favored.
Comparison summary (fixed usage basis)
- Estimated monthly cost: Qwen3.5-Plus ¥16.32 vs Qwen3.8-Flash ¥10.02 on a common CNY basis (list prices ¥16.32 / ¥10.02) — at this fixed usage, Qwen3.8-Flash is cheaper by ¥6.3/month.
- Cost ratio: under this basis, Qwen3.5-Plus costs about 1.6× Qwen3.8-Flash (Qwen3.8-Flash is ~39% cheaper). The ratio holds only at the current list prices, reference rate and fixed usage assumptions; it says nothing about capability, output quality or overall value.
- Input unit price (off-peak / single-price basis) tied after conversion: both ≈ ¥0.80 (list prices ¥0.8 / ¥0.8).
- Output unit price (off-peak / single-price basis): list prices ¥4.8 vs ¥2.7; after conversion Qwen3.8-Flash is lower (by ≈ ¥2.1/1M tokens).
- Cache-hit price (off-peak basis): Qwen3.5-Plus publishes no cache price (estimated at the standard input price); Qwen3.8-Flash ¥0.1.
- Context window: identical at 1000K.
- Modalities: Qwen3.5-Plus=Text; Qwen3.8-Flash=Text, Image understanding, Video understanding (Qwen3.8-Flash adds Image understanding, Video understanding).
- Price sources: Alibaba Cloud Model Studio pricing (verified 2026-09-18), Alibaba Cloud Model Studio — Qwen3.8-Flash model page (verified 2026-10-28); unit: official list price per 1M tokens (Qwen3.5-Plus in CNY, Qwen3.8-Flash in CNY).
These are computations from published list prices under fixed call volume, token usage, cache assumptions and billing rules. They are not rankings of capability, output quality or overall value, and do not constitute purchase advice.