DeepSeek V4.1 Flash
AvailableThe current Flash API name, presently serving DeepSeek-V4.1-Flash.
Access details: DeepSeek API
An alias. The provider can point it at a newer version.
deepseek-flashOpen weights on Hugging Face: deepseek-ai/DeepSeek-V4.1-Flash
Updated Oct 20, 2026
Capabilities & limits
- Context window
- 1M
- Maximum output
- 384K
- Image input
- Supported
- Tool calling
- Supported
- Structured output
- Supported
Pricing
USD / 1M tokens- Input
- $0.30
- Output
- $1.20
Standard rates per million tokens. Discounts and long-context rates, where offered, are on DeepSeek's pricing page.
Full rate card 6 rates
All prices in USD.
Cache-hit input, off-peak
$0.003 per 1M tokens- Off-peak: all times outside 01:00-04:00 and 06:00-10:00 UTC, Monday-Friday
Cache-hit input, peak
$0.006 per 1M tokens- Peak: 01:00-04:00 and 06:00-10:00 UTC, Monday-Friday
Cache-miss input, off-peak
$0.15 per 1M tokens- Off-peak: all times outside 01:00-04:00 and 06:00-10:00 UTC, Monday-Friday
Cache-miss input, peak
$0.30 per 1M tokens- Peak: 01:00-04:00 and 06:00-10:00 UTC, Monday-Friday
Output, off-peak
$0.60 per 1M tokens- Off-peak: all times outside 01:00-04:00 and 06:00-10:00 UTC, Monday-Friday
Output, peak
$1.20 per 1M tokens- Peak: 01:00-04:00 and 06:00-10:00 UTC, Monday-Friday
Current Flash peak/off-peak schedule.
Price history
Sep 13, 2026
Input $0.30 per million tokens
Oct 20, 2026
Input $0.30 per million tokens
Sep 13, 2026
Output $1.20 per million tokens
Oct 20, 2026
Output $1.20 per million tokens
Technical details
- Parameters
- 552B
- Active parameters
- 8B per token in prefill, 16B in decode
- Architecture
- Mixture-of-Experts with a Causal Encoder-Decoder (CED) architecture
- Training / knowledge cutoff
- Not published
- Input modalities
- Text, image
- Output modalities
- Text
From DeepSeek
Official announcement ↗How they describe it
Introducing the smallest model in our new architecture family, with native visual understanding.
What they say is new
More intelligence, less cost.
Release & lifecycle
- First available
- Sep 10, 2026
- available
- As of Sep 13, 2026
- available
- As of Oct 20, 2026