DeepSeek V4.1 Flash is $0.08 cheaper per 1M input tokens (84.2% lower; 6.33x difference).
API cost decision in 10 seconds
🔥DeepSeek V4.1 Flash vs NewClaude Haiku 5.5
Pick Claude Haiku 5.5 for lower cost; pick DeepSeek V4.1 Flash only if the larger context window matters more.
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Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Claude Haiku 5.5 for lower cost; pick DeepSeek V4.1 Flash only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Claude Haiku 5.5 is estimated at $0.35 vs $0.46 for DeepSeek V4.1 Flash, saving $0.11 (24.1% lower).
Cost-first pickClaude Haiku 5.5
Context-first pickDeepSeek V4.1 Flash
Sample savings$0.1124.1%
10x traffic gap$1.11
DeepSeek V4.1 Flash has more context, but Claude Haiku 5.5 saves $0.11 on the standard workload. At 10x that traffic, the same price gap is about $1.11. 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 Claude Haiku 5.5, and output-heavy chatbot favors Claude Haiku 5.5.
| Workload shape | Token mix | Better pick | DeepSeek V4.1 Flash | Claude Haiku 5.5 |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | DeepSeek V4.1 Flash | $0.52 | $0.75 |
| Balanced workload | 1M input + 1M output | Claude Haiku 5.5 | $0.91 | $0.6 |
| Output-heavy chatbot | 1M input + 5M output | Claude Haiku 5.5 | $4.47 | $2.6 |
Claude Haiku 5.5 is $0.39 cheaper per 1M output tokens (43.9% lower; 1.78x difference).
DeepSeek V4.1 Flash has 48.58K more context (1.05x larger).
Claude Haiku 5.5 is $0.11 cheaper on the standard workload (24.1% 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; Claude Haiku 5.5 has the lower output price; DeepSeek V4.1 Flash offers the larger context window. For the 1M input plus 500K output sample, Claude Haiku 5.5 is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $0.46 for DeepSeek V4.1 Flash and $0.35 for Claude Haiku 5.5.
Choose DeepSeek V4.1 Flash when you care most about lower input-token price, and larger context window.
Choose Claude Haiku 5.5 when you care most about lower output-token price.
- On the standard 1M input plus 500K output workload, Claude Haiku 5.5 is estimated at $0.35 vs $0.46 for DeepSeek V4.1 Flash, saving $0.11 (24.1% lower).
- Claude Haiku 5.5 is $0.11 cheaper on the standard workload (24.1% lower).
- DeepSeek V4.1 Flash is $0.08 cheaper per 1M input tokens (84.2% lower; 6.33x difference).
- Claude Haiku 5.5 is $0.39 cheaper per 1M output tokens (43.9% lower; 1.78x difference).
- DeepSeek V4.1 Flash has 48.58K more context (1.05x larger).
| Feature | 🔥DeepSeek V4.1 Flash (DeepSeek) | NewClaude Haiku 5.5 (Anthropic) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.0158 | $0.1 |
| Completion Price per 1M tokens | $0.891 | $0.5 |
| Sample Workload Cost 1M input + 500K output | $0.46 | $0.35 |
| Context Window | 1.05M | 1M |
| Release Date | ||
| Popularity | #1 |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Claude Haiku 5.5 | On the standard 1M input plus 500K output workload, Claude Haiku 5.5 is estimated at $0.35 vs $0.46 for DeepSeek V4.1 Flash, saving $0.11 (24.1% 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 | Claude Haiku 5.5 | 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 0423 can replace DeepSeek V4.1 Flash when lower sample workload cost matters most: $0.18.
- DeepSeek V4 Flash Vision Exp (batch) can replace DeepSeek V4.1 Flash when lower sample workload cost matters most: $0.28.
- Llama 4 Scout offers 1.31M context with $0.47 sample workload cost.
- MiMo-V2.6-Flash offers 1.05M context with $0.28 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.
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Cheaper alternatives
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Claude Haiku 5.5 is Anthropic's small, fast model for high-volume, cost-sensitive work such as summarization, subagents, and browser use. It succeeds Claude Haiku 4.5 with stronger coding, computer use, and...