Qwen3.5 397B A17B is $0.86 cheaper per 1M input tokens (68.8% lower; 3.21x difference).
API cost decision in 10 seconds
Qwen3.5 397B A17B vs Cogito v2.1 671B
Pick Qwen3.5 397B A17B when budget and context both matter.
Pricing data updated:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Qwen3.5 397B A17B when budget and context both matter.
On the standard 1M input plus 500K output workload, Qwen3.5 397B A17B is estimated at $1.56 vs $1.88 for Cogito v2.1 671B, saving $0.31 (16.8% lower).
Cost-first pickQwen3.5 397B A17B
Context-first pickQwen3.5 397B A17B
Sample savings$0.3116.8%
10x traffic gap$3.15
Qwen3.5 397B A17B is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $3.15. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Cost winner changes by workload shape: input-heavy / RAG favors Qwen3.5 397B A17B, balanced workload favors Cogito v2.1 671B, and output-heavy chatbot favors Cogito v2.1 671B.
| Workload shape | Token mix | Better pick | Qwen3.5 397B A17B | Cogito v2.1 671B |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Qwen3.5 397B A17B | $3.12 | $6.88 |
| Balanced workload | 1M input + 1M output | Cogito v2.1 671B | $2.73 | $2.5 |
| Output-heavy chatbot | 1M input + 5M output | Cogito v2.1 671B | $12.09 | $7.5 |
Cogito v2.1 671B is $1.09 cheaper per 1M output tokens (46.6% lower; 1.87x difference).
Qwen3.5 397B A17B has 134.14K more context (2.05x larger).
Qwen3.5 397B A17B is $0.31 cheaper on the standard workload (16.8% 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
Qwen3.5 397B A17B has the lower input price; Cogito v2.1 671B has the lower output price; Qwen3.5 397B A17B offers the larger context window. For the 1M input plus 500K output sample, Qwen3.5 397B A17B is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $1.56 for Qwen3.5 397B A17B and $1.88 for Cogito v2.1 671B.
Choose Qwen3.5 397B A17B when you care most about lower input-token price, and larger context window.
Choose Cogito v2.1 671B when you care most about lower output-token price.
- On the standard 1M input plus 500K output workload, Qwen3.5 397B A17B is estimated at $1.56 vs $1.88 for Cogito v2.1 671B, saving $0.31 (16.8% lower).
- Qwen3.5 397B A17B is $0.31 cheaper on the standard workload (16.8% lower).
- Qwen3.5 397B A17B is $0.86 cheaper per 1M input tokens (68.8% lower; 3.21x difference).
- Cogito v2.1 671B is $1.09 cheaper per 1M output tokens (46.6% lower; 1.87x difference).
- Qwen3.5 397B A17B has 134.14K more context (2.05x larger).
| Feature | Qwen3.5 397B A17B (Qwen) | Cogito v2.1 671B (Deep Cogito) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.39 | $1.25 |
| Completion Price per 1M tokens | $2.34 | $1.25 |
| Sample Workload Cost 1M input + 500K output | $1.56 | $1.88 |
| Context Window | 262.14K | 128K |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Qwen3.5 397B A17B | On the standard 1M input plus 500K output workload, Qwen3.5 397B A17B is estimated at $1.56 vs $1.88 for Cogito v2.1 671B, saving $0.31 (16.8% lower). |
| High-volume input processing | Qwen3.5 397B A17B | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Cogito v2.1 671B | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Qwen3.5 397B A17B | 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 397B A17B when lower sample workload cost matters most: $0.
- Qwen3 Coder 480B A35B (free) can replace Qwen3.5 397B A17B when lower sample workload cost matters most: $0.
- Qwen2.5 7B Instruct can replace Qwen3.5 397B A17B when lower sample workload cost matters most: $0.09.
- Qwen3.5-9B can replace Qwen3.5 397B A17B 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.
- Gemini 3.1 Flash Lite offers 1.05M context with $1 sample workload cost.
- DeepSeek V4 Pro offers 1.05M context with $0.87 sample workload cost.
- No popular competitor is currently available.
Cheaper alternatives
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