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Flash — fastest and cheapest, lighter reasoningOpen Weights
DeepSeek V4 Flash 0731 Pricing
DeepSeek · deepseek-deepseek-v4-flash-0731
Input / 1M tokens
$0.140
Output / 1M tokens
$0.280
Context window
1,048,576 tokens
≈ 1,398 pages of text
Max output
384k tokens
What it costs in practice
Typical request (1,200 in + 400 out tokens)$0.0003
1,000 requests / month$0.28/mo10,000 requests / month$2.80/mo100,000 requests / month$28.00/moEstimate your own workloadOpens the calculator with DeepSeek V4 Flash 0731 preloaded — adjust volume and token counts there.
Price history
Only one price point recorded so far.
The staircase chart appears once a price change is detected.
What it excels at
Supports 1M-token contexts and 384k output at very low per-token cost, suitable for high-volume batch processing and long-document tasks.
The business tradeoff
Flash designation indicates lighter optimization; complex multi-step reasoning trails closed flagships and output quality depends on deployment configuration.
Head-to-head
Vendor list rates, as of Jul 31, 2026 · source: openrouter · per-request examples assume 1,200 input + 400 output tokens.