DeepSeek V4.1 Flash is $0.1 cheaper per 1M input tokens (66% lower; 2.94x difference).
API cost decision in 10 seconds
🔥DeepSeek V4.1 Flash vs Qwen3.8 Omni Flash
Pick DeepSeek V4.1 Flash when budget and context both matter.
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Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick DeepSeek V4.1 Flash when budget and context both matter.
On the standard 1M input plus 500K output workload, DeepSeek V4.1 Flash is estimated at $0.33 vs $0.39 for Qwen3.8 Omni Flash, saving $0.05 (13.1% lower).
Cost-first pickDeepSeek V4.1 Flash
Context-first pickDeepSeek V4.1 Flash
Sample savings$0.0513.1%
10x traffic gap$0.51
DeepSeek V4.1 Flash is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $0.51. 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 DeepSeek V4.1 Flash, balanced workload favors DeepSeek V4.1 Flash, and output-heavy chatbot favors Qwen3.8 Omni Flash.
| Workload shape | Token mix | Better pick | DeepSeek V4.1 Flash | Qwen3.8 Omni Flash |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | DeepSeek V4.1 Flash | $0.54 | $0.98 |
| Balanced workload | 1M input + 1M output | DeepSeek V4.1 Flash | $0.62 | $0.62 |
| Output-heavy chatbot | 1M input + 5M output | Qwen3.8 Omni Flash | $2.89 | $2.5 |
Qwen3.8 Omni Flash is $0.1 cheaper per 1M output tokens (17.1% lower; 1.21x difference).
DeepSeek V4.1 Flash has 48.58K more context (1.05x larger).
DeepSeek V4.1 Flash is $0.05 cheaper on the standard workload (13.1% 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
DeepSeek V4.1 Flash has the lower input price; Qwen3.8 Omni Flash has the lower output price; DeepSeek V4.1 Flash offers the larger context window. For the 1M input plus 500K output sample, DeepSeek V4.1 Flash is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $0.33 for DeepSeek V4.1 Flash and $0.39 for Qwen3.8 Omni Flash.
Choose DeepSeek V4.1 Flash when you care most about lower input-token price, and larger context window.
Choose Qwen3.8 Omni Flash when you care most about lower output-token price.
- On the standard 1M input plus 500K output workload, DeepSeek V4.1 Flash is estimated at $0.33 vs $0.39 for Qwen3.8 Omni Flash, saving $0.05 (13.1% lower).
- DeepSeek V4.1 Flash is $0.05 cheaper on the standard workload (13.1% lower).
- DeepSeek V4.1 Flash is $0.1 cheaper per 1M input tokens (66% lower; 2.94x difference).
- Qwen3.8 Omni Flash is $0.1 cheaper per 1M output tokens (17.1% lower; 1.21x difference).
- DeepSeek V4.1 Flash has 48.58K more context (1.05x larger).
| Feature | 🔥DeepSeek V4.1 Flash (DeepSeek) | Qwen3.8 Omni Flash (Qwen) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.051 | $0.15 |
| Completion Price per 1M tokens | $0.567 | $0.47 |
| Sample Workload Cost 1M input + 500K output | $0.33 | $0.39 |
| Context Window | 1.05M | 1M |
| Release Date | ||
| Popularity | #3 |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | DeepSeek V4.1 Flash | On the standard 1M input plus 500K output workload, DeepSeek V4.1 Flash is estimated at $0.33 vs $0.39 for Qwen3.8 Omni Flash, saving $0.05 (13.1% lower). |
| High-volume input processing | DeepSeek V4.1 Flash | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Qwen3.8 Omni Flash | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | DeepSeek V4.1 Flash | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- DeepSeek V4 Flash 0731 (free) can replace DeepSeek V4.1 Flash when lower sample workload cost matters most: $0.
- DeepSeek V4 Flash (free) can replace DeepSeek V4.1 Flash when lower sample workload cost matters most: $0.
- DeepSeek V4 Flash 0731 (batch) can replace DeepSeek V4.1 Flash when lower sample workload cost matters most: $0.12.
- DeepSeek V4 Flash 0423 can replace DeepSeek V4.1 Flash when lower sample workload cost matters most: $0.18.
- Llama 4 Scout offers 1.31M context with $0.25 sample workload cost.
- GPT-6 Luna offers 1.05M context with $0.35 sample workload cost.
- GPT-6 Luna Pro offers 1.05M context with $0.35 sample workload cost.
- GPT-6 Luna Pro (batch) offers 1.05M context with $0.17 sample workload cost.
- Kimi K3.1 Pro · MoonshotAI · #1
- DeepSeek V4.1 Flash 1017 · DeepSeek · #2
- GLM 5.3 Flash · Z.ai · #4
- GPT-6 Luna · OpenAI · #5
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