DeepSeek V4 Flash 0423
by DeepSeek · deepseek/deepseek-v4-flash · #10 cheapest of 422 paid models
Prices updated Sep 20, 2026, 12:34 AM UTC · refreshed hourly
DeepSeek V4 Flash is an efficiency-optimized Mixture-of-Experts model from DeepSeek with 284B total parameters and 13B activated parameters, supporting a 1M-token context window. It is designed for fast inference and...
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Pricing
Input
$0.038
per 1M tokens
Output
$0.076
per 1M tokens
Blended (3:1)
$0.047
3 input : 1 output
Cache read
$0.0076
per 1M cached tokens
Cache write
—
per 1M tokens
Cache & batch economics
Effective prices for DeepSeek V4 Flash 0423 with prompt caching.
| Cache hit rate | Effective blended $/1M | Example request* | vs no cache |
|---|---|---|---|
| 0% | $0.047 | $0.003931 | — |
| 50% | $0.036 | $0.002419 | −38% |
| 90% | $0.027 | $0.00121 | −69% |
*Example: 100K sticky context + 2K new input + 1K output. Batch discount is an approximate 50% off list rates (available for OpenAI / Anthropic / Google — not flagged for this creator). Confirm on the vendor’s pricing page.
What a request costs
| Workload | Input tokens | Output tokens | Cost / request | Cost / 1K requests |
|---|---|---|---|---|
| Short chat message | 500 | 300 | $4.16e-5 | $0.0416 |
| Document summary | 8,000 | 1,000 | $0.000378 | $0.378 |
| Codebase question (RAG) | 30,000 | 2,000 | $0.001285 | $1.29 |
| Long-context analysis | 150,000 | 5,000 | $0.006048 | $6.05 |
Performance
Intelligence Index
34.3
AA composite quality
Coding Index
69.1
Math Index
—
Agentic Index
27.9
Output speed
249 tok/s
median
Time to first token
0.93s
median
Time to first answer
8.96s
after reasoning tokens
Artificial Analysis benchmarks
| Benchmark | Score |
|---|---|
| GPQA Diamond | 90.8% |
| Humanity's Last Exam | 38.6% |
| SciCode | 50.3% |
| AA-LCR (Long Context Reasoning) | 79.7% |
| Terminal-Bench 2.1 | 78.7% |
| τ³-Bench Banking | 39.4% |
Design Arena Elo
| Category | Elo |
|---|---|
| Website | 1,220 |
| UI components | 1,179 |
| Data viz | 1,142 |
| SVG | 1,179 |
| 3D | 1,217 |
| Game dev | 1,220 |
| Code categories | 1,220 |
| ASCII art | 1,130 |
Specs
Context window
1.05M
tokens
Max output
384K
tokens
Input modalities
text
Tokenizer
DeepSeek