DeepSeek Flash vs DeepSeek V4 Pro
Compare DeepSeek Flash vs DeepSeek V4 Pro API pricing, token costs, context windows, and latency. See which model is cheaper and better for your stack.
DeepSeek Flash charges $0.15/1M input and $0.60/1M output tokens, compared to DeepSeek V4 Pro at $0.66/1M input and $1.98/1M output. DeepSeek Flash is 4.4x cheaper on input tokens. In reasoning benchmarks, DeepSeek Flash holds the higher AA Intelligence Index rating (33/100). For latency-critical streaming, DeepSeek Flash delivers 170 t/s (46.0s TTFT) while DeepSeek V4 Pro provides 80 t/s (59.0s TTFT).
Full Metric & Specification Comparison
| Metric | DeepSeek Flash | DeepSeek V4 Pro | Advantage |
|---|---|---|---|
| Provider | DeepSeek | DeepSeek | - |
| Input Token Cost (1M) | $0.150 | $0.660 | DeepSeek Flash |
| Output Token Cost (1M) | $0.600 | $1.980 | DeepSeek Flash |
| Context Window | 1,000k tokens | 1,000k tokens | Tie |
| AA Intelligence Index | 33/100 | 23/100 | DeepSeek Flash |
| Streaming Latency | Fast | Moderate | - |
Key Architectural Takeaways
- Input Token Cost: DeepSeek Flash is $0.15/1M vs DeepSeek V4 Pro at $0.66/1M
- Output Token Cost: DeepSeek Flash is $0.60/1M vs DeepSeek V4 Pro at $1.98/1M
- Context Window: DeepSeek Flash supports 1,000k tokens vs DeepSeek V4 Pro with 1,000k tokens
- Benchmark Intelligence Rating: DeepSeek Flash scores 33/100 vs DeepSeek V4 Pro at 23/100 (AA Index v5)
- Inference Latency: DeepSeek Flash is rated Fast vs DeepSeek V4 Pro rated Moderate
Calculate Your Team's Exact Bill Difference
Drag the sliders below to see real-time cost divergences based on your daily token consumption.
Deploying DeepSeek Flash over DeepSeek V4 Pro saves $18.00/mo ($216/yr) at this volume.
Frequently Asked Questions
Is DeepSeek Flash cheaper than DeepSeek V4 Pro?
DeepSeek Flash is significantly more economical, charging $0.15/1M input compared to $0.66/1M for DeepSeek V4 Pro.
Which model should I choose for production?
If your primary constraint is API cost and high query throughput, choose DeepSeek Flash. If you require peak reasoning accuracy and complex tool use, DeepSeek Flash is recommended.
How does context window compare between DeepSeek Flash and DeepSeek V4 Pro?
DeepSeek Flash offers the larger context window (1,000k tokens), allowing you to pass significantly larger codebases or documents without chunking.
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