DeepSeek V4.1 Flash
- Score
- 45.1 · rank 13
- Price
- Freemium
- API
- Yes
- Weights
- Yes
WHAT IT DOES
DeepSeek-V4.1-Flash is DeepSeek's efficient multimodal model. The line launched September 10, 2026, and the October 17 checkpoint, V4.1-Flash-1017, is the one on the website, the app, the API and Hugging Face. DeepSeek describes a 552-billion-parameter mixture of experts with 8 billion parameters active on input and 16 billion on output, native image understanding, and a context of up to 1 million tokens. Call it as deepseek-flash. The older names deepseek-v4-flash and deepseek-v4-flash-vision-exp route to this model. Weights are under the MIT licence. DeepSeek says the October 17 update improves reasoning, coding, agent and vision results and shortens outputs, without a price change.
WHY WE PICKED IT
The DeepSeek API name most people already use now serves this model, and the weights are public. It is the Flash model the independent index lists, which the older V4-Flash entry no longer is.
QUICK FACTS
STRENGTHS
- ✓MIT-licensed weights
- ✓1 million token context with native image input
- ✓8 billion active parameters on input and 16 billion on output, per DeepSeek
- ✓The October 17 checkpoint is a drop-in replacement on deepseek-flash
LIMITATIONS
- ⚠DeepSeek's benchmark gains for the October 17 checkpoint are the company's own
- ⚠US civilian federal agencies were ordered off DeepSeek products on October 19, 2026
- ⚠Serving a 552B mixture of experts is not a laptop job
- ⚠The older V4-Pro API name was scheduled to route here as well, at Flash rates, until a V4.1 Pro ships
GETTING STARTED
Use deepseek-flash on the DeepSeek API, or download DeepSeek-V4.1-Flash from Hugging Face. DeepSeek says the September model names still route here, at the current Flash price. For the best agent results, DeepSeek asks for DeepSeek Harness 0.2.1-rc.1 or later.
BENCHMARKS
OFFICIAL LINKS
PRICING
Free tier includes limited features. Paid plans unlock full access, higher usage limits, and commercial usage rights.
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EXPLORE ALTERNATIVES
Compare DeepSeek V4.1 Flash with 5+ similar llms AI tools.
FREQUENTLY ASKED QUESTIONS
Is DeepSeek V4.1 Flash free?
DeepSeek V4.1 Flash offers a free tier with optional paid upgrades.
Does DeepSeek V4.1 Flash have an API?
Yes, DeepSeek V4.1 Flash offers an API for programmatic integration.
What is DeepSeek V4.1 Flash best for?
DeepSeek V4.1 Flash is best for Best Current DeepSeek. DeepSeek-V4. The DeepSeek API name most people already use now serves this model, and the weights are public. It is the Flash model the independent index lists, which the older V4-Flash entry no longer is.
What platforms does DeepSeek V4.1 Flash support?
DeepSeek V4.1 Flash supports web, api, local.
Is DeepSeek V4.1 Flash open source?
Yes, DeepSeek V4.1 Flash is open source. You can access the source code, contribute, and deploy it on your own infrastructure.
How do I get started with DeepSeek V4.1 Flash?
Use deepseek-flash on the DeepSeek API, or download DeepSeek-V4.1-Flash from Hugging Face. DeepSeek says the September model names still route here, at the current Flash price. For the best agent results, DeepSeek asks for DeepSeek Harness 0.2.1-rc.1 or later.
How do I use DeepSeek V4.1 Flash?
DeepSeek V4.1 Flash is a large language model for text generation, analysis, and conversation. Access through the web interface. Enter prompts or questions to get responses. It excels at mit-licensed weights.
FEATURED ON CURATEDAI
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