DeepSeek V4 Flash is $2.87 cheaper per 1M input tokens (95.8% lower; 23.8x difference).
API cost decision in 10 seconds
🔥Claude Sonnet 4.6 vs 🔥DeepSeek V4 Flash
Pick DeepSeek V4 Flash 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 DeepSeek V4 Flash when budget and context both matter.
On the standard 1M input plus 500K output workload, DeepSeek V4 Flash is estimated at $0.25 vs $10.5 for Claude Sonnet 4.6, saving $10.25 (97.6% lower).
Cost-first pickDeepSeek V4 Flash
Context-first pickDeepSeek V4 Flash
Sample savings$10.2597.6%
10x traffic gap$102.48
DeepSeek V4 Flash is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $102.48. Use the calculator below to replace the sample workload with your own token volume.
DeepSeek V4 Flash is $14.75 cheaper per 1M output tokens (98.3% lower; 59.5x difference).
DeepSeek V4 Flash has 48.58K more context (1.05x larger).
DeepSeek V4 Flash is $10.25 cheaper on the standard workload (97.6% 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 Flash has the lower input price; DeepSeek V4 Flash has the lower output price; DeepSeek V4 Flash offers the larger context window. For the 1M input plus 500K output sample, DeepSeek V4 Flash is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $10.5 for Claude Sonnet 4.6 and $0.25 for DeepSeek V4 Flash.
Choose Claude Sonnet 4.6 when its provider, model quality, latency, or availability is more important than the numeric price/context winner.
Choose DeepSeek V4 Flash when you care most about lower input-token price, lower output-token price, and larger context window.
- On the standard 1M input plus 500K output workload, DeepSeek V4 Flash is estimated at $0.25 vs $10.5 for Claude Sonnet 4.6, saving $10.25 (97.6% lower).
- DeepSeek V4 Flash is $10.25 cheaper on the standard workload (97.6% lower).
- DeepSeek V4 Flash is $2.87 cheaper per 1M input tokens (95.8% lower; 23.8x difference).
- DeepSeek V4 Flash is $14.75 cheaper per 1M output tokens (98.3% lower; 59.5x difference).
- DeepSeek V4 Flash has 48.58K more context (1.05x larger).
| Feature | 🔥Claude Sonnet 4.6 (Anthropic) | 🔥DeepSeek V4 Flash (DeepSeek) |
|---|---|---|
| Input Price prompt tokens per 1M | $3 | $0.126 |
| Completion Price per 1M tokens | $15 | $0.252 |
| Sample Workload Cost 1M input + 500K output | $10.5 | $0.25 |
| Context Window | 1M | 1.05M |
| Release Date | 2026-02-17 | 2026-04-24 |
| Popularity Rank current rank | #3 | #4 |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | DeepSeek V4 Flash | On the standard 1M input plus 500K output workload, DeepSeek V4 Flash is estimated at $0.25 vs $10.5 for Claude Sonnet 4.6, saving $10.25 (97.6% lower). |
| High-volume input processing | DeepSeek V4 Flash | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | DeepSeek V4 Flash | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | DeepSeek V4 Flash | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
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