DeepSeek V4 Flash
by DeepSeek · deepseek/deepseek-v4-flash · #33 cheapest of 325 paid models
Prices updated Jul 22, 2026, 1:31 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
$0.094
per 1M tokens
Output
$0.188
per 1M tokens
Blended (3:1)
$0.117
3 input : 1 output
Cache read
$0.019
per 1M cached tokens
Cache write
—
per 1M tokens
Cache & batch economics
Effective prices for DeepSeek V4 Flash with prompt caching.
| Cache hit rate | Effective blended $/1M | Example request* | vs no cache |
|---|---|---|---|
| 0% | $0.117 | $0.009755 | — |
| 50% | $0.089 | $0.006003 | −38% |
| 90% | $0.067 | $0.003002 | −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 | $0.000103 | $0.1032 |
| Document summary | 8,000 | 1,000 | $0.000938 | $0.938 |
| Codebase question (RAG) | 30,000 | 2,000 | $0.003189 | $3.19 |
| Long-context analysis | 150,000 | 5,000 | $0.015 | $15.01 |
Performance
Intelligence Index
40.3
AA composite quality
Coding Index
56.2
Math Index
—
Agentic Index
31.1
Output speed
115 tok/s
median
Time to first token
0.86s
median
Time to first answer
49.64s
after reasoning tokens
Artificial Analysis benchmarks
| Benchmark | Score |
|---|---|
| GPQA Diamond | 89.4% |
| Humanity's Last Exam | 32.1% |
| SciCode | 44.9% |
| IFBench | 79.2% |
| AA-LCR (Long Context Reasoning) | 63.0% |
| Terminal-Bench Hard | 35.6% |
| Terminal-Bench 2.1 | 61.8% |
| τ²-Bench (Telecom) | 95.0% |
| τ³-Bench Banking | 22.9% |
Design Arena Elo
| Category | Elo |
|---|---|
| Website | 1,235 |
| UI components | 1,205 |
| Data viz | 1,159 |
| SVG | 1,202 |
| 3D | 1,248 |
| Game dev | 1,254 |
| Code categories | 1,239 |
| ASCII art | 1,157 |
Specs
Context window
1.05M
tokens
Max output
—
tokens
Input modalities
text
Tokenizer
DeepSeek