Seed 1.6 Flash is $0.06 cheaper per 1M input tokens (46% lower; 1.85x difference).
API cost decision in 10 seconds
Qwen3.5-35B-A3B vs Seed 1.6 Flash
Pick Seed 1.6 Flash when budget is the priority.
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Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Seed 1.6 Flash when budget is the priority.
On the standard 1M input plus 500K output workload, Seed 1.6 Flash is estimated at $0.22 vs $0.64 for Qwen3.5-35B-A3B, saving $0.41 (64.8% lower).
Cost-first pickSeed 1.6 Flash
Context-first pickBoth models
Sample savings$0.4164.8%
10x traffic gap$4.14
The reported context window is tied, so cost and provider fit carry more weight. At 10x that traffic, the same price gap is about $4.14. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Seed 1.6 Flash stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Qwen3.5-35B-A3B | Seed 1.6 Flash |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Seed 1.6 Flash | $1.2 | $0.53 |
| Balanced workload | 1M input + 1M output | Seed 1.6 Flash | $1.14 | $0.38 |
| Output-heavy chatbot | 1M input + 5M output | Seed 1.6 Flash | $5.14 | $1.57 |
Seed 1.6 Flash is $0.7 cheaper per 1M output tokens (70% lower; 3.33x difference).
Both models report the same context window at 262.14K tokens.
Seed 1.6 Flash is $0.41 cheaper on the standard workload (64.8% lower).
Estimate your workload cost
Your Workload Cost
This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.
Quick Decision
Seed 1.6 Flash has the lower input price; Seed 1.6 Flash has the lower output price; both models report the same context window. For the 1M input plus 500K output sample, Seed 1.6 Flash is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $0.64 for Qwen3.5-35B-A3B and $0.22 for Seed 1.6 Flash.
Choose Qwen3.5-35B-A3B when its provider, model quality, latency, or availability is more important than the numeric price/context winner.
Choose Seed 1.6 Flash when you care most about lower input-token price, and lower output-token price.
- On the standard 1M input plus 500K output workload, Seed 1.6 Flash is estimated at $0.22 vs $0.64 for Qwen3.5-35B-A3B, saving $0.41 (64.8% lower).
- Seed 1.6 Flash is $0.41 cheaper on the standard workload (64.8% lower).
- Seed 1.6 Flash is $0.06 cheaper per 1M input tokens (46% lower; 1.85x difference).
- Seed 1.6 Flash is $0.7 cheaper per 1M output tokens (70% lower; 3.33x difference).
- Both models report the same context window at 262.14K tokens.
| Feature | Qwen3.5-35B-A3B (Qwen) | Seed 1.6 Flash (ByteDance Seed) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.139 | $0.075 |
| Completion Price per 1M tokens | $1 | $0.3 |
| Sample Workload Cost 1M input + 500K output | $0.64 | $0.22 |
| Context Window | 262.14K | 262.14K |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Seed 1.6 Flash | On the standard 1M input plus 500K output workload, Seed 1.6 Flash is estimated at $0.22 vs $0.64 for Qwen3.5-35B-A3B, saving $0.41 (64.8% lower). |
| High-volume input processing | Seed 1.6 Flash | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Seed 1.6 Flash | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Tie | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Qwen3 Next 80B A3B Instruct (free) can replace Qwen3.5-35B-A3B when lower sample workload cost matters most: $0.
- Qwen3 Coder 480B A35B (free) can replace Qwen3.5-35B-A3B when lower sample workload cost matters most: $0.
- Qwen2.5 7B Instruct can replace Qwen3.5-35B-A3B when lower sample workload cost matters most: $0.09.
- Qwen3.5-9B can replace Qwen3.5-35B-A3B when lower sample workload cost matters most: $0.11.
- Llama 4 Scout offers 10M context with $0.23 sample workload cost.
- Owl Alpha offers 1.05M context with $0 sample workload cost.
- DeepSeek V4 Flash offers 1.05M context with $0.2 sample workload cost.
- Gemini 2.5 Flash Lite offers 1.05M context with $0.3 sample workload cost.
- DeepSeek V4 Flash · DeepSeek · #1
- Hy3 preview · Tencent · #2
- Claude Opus 4.7 · Anthropic · #3
- Claude Sonnet 4.6 · Anthropic · #4
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