Qwen3.8 MaxvsSeed 2.1 Pro
Both language models, compared at each maker’s own API list prices. Every figure links to its source.
Compare at your usage
Every model priced for the same request8,000 tokens in, 2,000 out
| Qwen3.8 Max on Alibaba Cloud Model Studio | Seed 2.1 Pro on Volcengine Ark | |
|---|---|---|
| Rate applied | Base rate | Base rate |
| Inputper 1M tokens | $1.65 | ¥6.00 |
| Cache readper 1M tokens | $0.206 | ¥1.20 |
| Outputper 1M tokens | $4.951 | ¥30.00 |
| Cost per request | $0.0231 | ¥0.108 |
| Per 1,000 requests | $23.10 | ¥108.00 |
- Qwen3.8 Max Alibaba Cloud Model Studio pricing · as of Nov 2, 2026 · Qwen3.8 Max model · as of Nov 1, 2026
- Seed 2.1 Pro 火山方舟：模型价格 · as of Nov 2, 2026
Every model is priced for the same request at its maker’s own list prices (each with its source and date), so bold marks the cheapest. A model that can’t serve the request is named, not ranked; a condition its seller doesn’t price says which rate was used.
Key differences
InputMaker’s official API · china · CNY
¥12.00 / 1M tokens 阿里云百炼：模型价格in Chinese · as of Nov 2, 2026
¥6.00 / 1M tokens 火山方舟：模型价格in Chinese · as of Nov 2, 2026
OutputMaker’s official API · china · CNY
¥36.00 / 1M tokens 阿里云百炼：模型价格in Chinese · as of Nov 2, 2026
¥30.00 / 1M tokens 火山方舟：模型价格in Chinese · as of Nov 2, 2026
Context
1,000,000 Qwen3.8 Max model · as of Nov 1, 2026
1,024,000 火山方舟：模型列表in Chinese · as of Nov 3, 2026
Max output
131,072 Qwen3.8 Max model · as of Nov 1, 2026
256,000 火山方舟：模型列表in Chinese · as of Nov 3, 2026
Input modalities
Text, Image, Video Qwen3.8 Max model · as of Nov 1, 2026
Text, Image ZCode--火山方舟-火山引擎in Chinese · as of Nov 2, 2026
Cache readMaker’s official API · china · CNY
¥0.25 / 1M tokens Qwen3.8 Max model · as of Nov 1, 2026
¥1.20 / 1M tokens 火山方舟：模型价格in Chinese · as of Nov 2, 2026
These differences use verified vendor specifications or each maker’s official API on the same region, currency, meter and billing conditions. Different conditions remain side by side in the full table; they do not establish which model is cheaper. Declared features describe support, not measured quality or a recommendation. Missing evidence does not mean a feature is unsupported.
Full comparison
| Qwen3.8 Max Alibaba Qwen | Seed 2.1 Pro ByteDance Seed | |
|---|---|---|
| Overview | ||
| Released | Aug 2, 2026 | Sep 2026 |
| Open weights | — | — |
| Specs | ||
| Context | 1M | 1.02M |
| Max input | 991.81K | Not stated |
| Max output | 131.07K | 256K |
| Input modalities | Text, Image, Video | Text, Image |
| Output modalities | Text | Text |
| Reasoning | ||
| Reasoning efforts | low, medium, xhigh | low, medium, high, minimal |
| Reasoning can be off | ||
| Max thinking budget | 262.14K | Not stated |
| Tool use | ||
| Structured output | ||
| Pricing · per 1M tokens | ||
| Input price | $1.65 | ¥6.00 |
| Output price | $4.951 | ¥30.00 |
| Cache read price | $0.206 | ¥1.20 |
| Cache write price | $2.063Explicit cache | — |
| Blended price (3 input : 1 output) | $2.47525 | ¥12.00 |
| Pricing under conditions · per 1M tokens | ||
| Batch input price | Not offered | ¥3.00Batch |
| Batch output price | Not offered | ¥15.00Batch |
| Flex tier input price | Not offered | ¥3.00Flex tier |
| Flex tier output price | Not offered | ¥15.00Flex tier |
| Cited scores | ||
| Epoch Capabilities Index | 157.4 | — |
| LMArena Text | 1,482 | — |
| LMArena Text · Coding | 1,525 | — |
| LMArena Vision | 1,313 | — |
| LMArena Text · Chinese | 1,538 | — |
| Epoch AI · GPQA Diamond | 92.7% xhigh effort | — |
| Epoch AI · FrontierMath Tiers 1–3 | 74.7% xhigh effort | — |
Headline prices may come from different channels, regions or tiers. Check each source before choosing a model; missing facts stay blank.
Model details and sources
- Qwen3.8 Max → Available
- Seed 2.1 Pro → Available
Cited scores
- Epoch AI, 'Capabilities & benchmarking'. Published online at epoch.ai. Retrieved from 'https://epoch.ai/benchmarks'. Licensed CC BY 4.0. · Epoch AI Benchmarking Hub data · CC BY 4.0 · as of Nov 5, 2026
- Epoch AI, 'Capabilities & benchmarking'. Published online at epoch.ai. Retrieved from 'https://epoch.ai/benchmarks'. Licensed CC BY 4.0. · Epoch AI Benchmarking Hub data · CC BY 4.0 · as of Oct 28, 2026
- Epoch AI, 'Capabilities & benchmarking'. Published online at epoch.ai. Retrieved from 'https://epoch.ai/benchmarks'. Licensed CC BY 4.0. · Epoch AI Benchmarking Hub data · CC BY 4.0 · as of Nov 4, 2026
- LiveBench (White et al.), release 2026-06-25, livebench.ai, licensed CC BY-SA 4.0. This board, adapted from it, is shared under CC BY-SA 4.0. · LiveBench release 2026-06-25 · CC BY-SA 4.0 · as of Jun 25, 2026
- LMArena (Arena), leaderboard-dataset on Hugging Face, licensed CC BY 4.0 · LMArena leaderboard dataset (Hugging Face) · CC BY 4.0 · as of Oct 13, 2026
- LMArena (Arena), leaderboard-dataset on Hugging Face, licensed CC BY 4.0 · LMArena leaderboard dataset (Hugging Face) · CC BY 4.0 · as of Oct 28, 2026
- LMArena (Arena), leaderboard-dataset on Hugging Face, licensed CC BY 4.0 · LMArena leaderboard dataset (Hugging Face) · CC BY 4.0 · as of Oct 19, 2026