DeepSeek-V4.1 Flash pricing
DeepSeek-V4.1 Flash API peak cost from DeepSeek — $0.300 per 1M input tokens and $1.20 per 1M output tokens. Peak rates · off-peak 50% lower · legacy V4 Flash/Vision IDs route here. Estimate your real monthly bill below, then compare it against every other model.
Fast / cheap 1M context · all prices USD per 1M tokens, peak rates shown above, this price verified 2026-09-14.
| Billing period | Cached input / 1M | Cache-miss input / 1M | Output / 1M |
|---|---|---|---|
| Peak | $0.0060 | $0.300 | $1.20 |
| Off-peak | $0.0030 | $0.150 | $0.600 |
Peak: 01:00–04:00 and 06:00–10:00 UTC, Monday–Friday; all other hours are off-peak.
DeepSeek-V4.1 Flash capabilities & limits
Representative specs for this tier — confirm exact limits in the DeepSeek docs.
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Call DeepSeek-V4.1 Flash from your code
The exact model string and endpoint to use. Works with the OpenAI SDK — just point base_url at the URL below.
deepseek-flashhttps://api.deepseek.com/v1DEEPSEEK_API_KEYcurl https://api.deepseek.com/v1/chat/completions \
-H "Authorization: Bearer $DEEPSEEK_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "deepseek-flash",
"messages": [{"role": "user", "content": "Hello"}]
}'Model strings follow each provider's naming convention; confirm the current id in the DeepSeek docs before relying on it.
What a DeepSeek-V4.1 Flash API call actually costs
Blended input + output cost at DeepSeek-V4.1 Flash's peak list rates — useful yardsticks before you commit to volume.
DeepSeek-V4.1 Flash cost calculator
Enter your monthly volume to estimate the DeepSeek-V4.1 Flash bill. Runs entirely in your browser.
Peak/off-peak and long-context pricing are applied automatically where published. Cache-write, Batch/Flex and Fast-mode adjustments are not included. For the full multi-model breakdown, use the cost calculator.
DeepSeek models — DeepSeek-V4.1 Flash in context
How DeepSeek-V4.1 Flash prices against its siblings. Cheapest reference cost first.
| Model | Input /1M | Output /1M | Cost / call* | Context | Type |
|---|---|---|---|---|---|
| DeepSeek-V4.1 Flash Peak rates · off-peak 50% lower · legacy V4 Flash/Vision IDs route here | $0.300 | $1.20 | $0.0015 | 1M | Fast / cheap |
| DeepSeek-V4 Pro V4-Pro-0813 · peak rates · off-peak 50% lower | $1.32 | $3.96 | $0.0053 | 1M | Reasoning |
*Reference cost of one call with 1,000 input + 1,000 output tokens — a neutral yardstick. DeepSeek rows use peak rates; their model pages and the calculator include the 50%-lower off-peak tier. Use the calculator for your real usage. Cheapest row highlighted.
How DeepSeek-V4.1 Flash pricing works
DeepSeek-V4.1 Flash is billed per token: a lower input price of $0.300 per million tokens for everything you send, and a higher output price of $1.20 per million for everything the model generates during peak hours. To turn that into a real DeepSeek-V4.1 Flash bill, multiply by your monthly request volume and average prompt/response length — the calculator above does exactly that.
Prompt caching is the biggest lever on your DeepSeek-V4.1 Flash cost: cached input tokens bill at just $0.0060 per million — about 98% cheaper. If you reuse a long system prompt or context across calls, caching can dramatically cut the input portion of your bill.
Time-based pricing: off-peak cache-hit input, cache-miss input and output rates are all 50% below peak. Peak: 01:00–04:00 and 06:00–10:00 UTC, Monday–Friday; all other hours are off-peak.
List prices move fast — always confirm the current numbers on the official DeepSeek pricing page before relying on them for budgeting.
DeepSeek-V4.1 Flash pricing FAQ
How much does the DeepSeek-V4.1 Flash API cost?
DeepSeek-V4.1 Flash peak pricing is $0.300 per 1M input tokens and $1.20 per 1M output tokens, with cached input at $0.0060 per 1M (about 98% off). Off-peak rates are $0.150 input, $0.600 output and $0.0030 cached input. A typical 3K-input / 500-output call at the displayed rate works out to about $0.0015.
What is DeepSeek-V4.1 Flash's context window?
DeepSeek-V4.1 Flash has a 1M-token context window. Tokens you put in the prompt are billed at the $0.300 per 1M input rate.
Does DeepSeek-V4.1 Flash support prompt caching?
Yes. DeepSeek-V4.1 Flash bills cached input tokens at $0.0060 per 1M instead of $0.300 — roughly 98% cheaper for the repeated part of your prompts.
Is there a cheaper alternative to DeepSeek-V4.1 Flash?
In the same fast / cheap tier, Gemini 1.5 Flash-8B (Google) is cheaper at $0.037 in / $0.150 out. The overall cheapest model on the market is Gemini 1.5 Flash-8B.