DeepSeek V4.1 Flash
StandardDeepSeek's cost-efficient V4.1 tier and the first model built on the Causal Encoder-Decoder (CED) architecture: a 552B MoE activating 8B parameters on input and 16B on output.
1M-token context with image understanding trained jointly from pretraining. Compressed KV caching cuts cache memory to roughly a quarter of the previous Flash generation. Built for coding, terminal, and computer-use agents and long-horizon tasks, exceeding V4 Pro on performance, speed, and task completion time.
▼
DeepSeek V4.1 Flash is somewhat expensive at $0.03/M tokens input and $0.50/M tokens output. Cached input reads are priced at $0.01/M tokens, making repeated context cheaper. The model supports vision/image input, extended reasoning, a 1M context window.
Benchmarks
Specifications
Performance
Providers
Misc
Compare with
GPT 6 Astravs DeepSeek V4.1 FlashGPT 6.1 Sol Provs DeepSeek V4.1 FlashGPT 6.1 Solvs DeepSeek V4.1 FlashGPT 6 Luna Provs DeepSeek V4.1 FlashGPT 6 Lunavs DeepSeek V4.1 Flash
Claude Fable 5.1vs DeepSeek V4.1 FlashClaude Opus 5.5vs DeepSeek V4.1 FlashClaude Sonnet 5.5vs DeepSeek V4.1 FlashClaude Haiku 5.5vs DeepSeek V4.1 Flash
Gemini 3.8 Flashvs DeepSeek V4.1 FlashGemini 3.5 Flash-Litevs DeepSeek V4.1 FlashGemma 4 31Bvs DeepSeek V4.1 Flash
Grok 4.7vs DeepSeek V4.1 FlashGrok Build 0.1vs DeepSeek V4.1 Flash
Muse Spark 1.3vs DeepSeek V4.1 Flash
DeepSeek V4 Pro (0813)vs DeepSeek V4.1 Flash
MiniMax M3vs DeepSeek V4.1 Flash
Kimi K3vs DeepSeek V4.1 FlashKimi K2.7 Codevs DeepSeek V4.1 Flash
GLM 5.3vs DeepSeek V4.1 FlashGLM 5.3 Flashvs DeepSeek V4.1 Flash
Qwen3.8 Max (0902)vs DeepSeek V4.1 FlashQwen3 Coder Nextvs DeepSeek V4.1 Flash
Nemotron 3 Ultravs DeepSeek V4.1 FlashFrequently Asked Questions about DeepSeek V4.1 Flash▼
When was DeepSeek V4.1 Flash released?
▼
DeepSeek V4.1 Flash was released on September 10, 2026.
Who created DeepSeek V4.1 Flash?
▼
DeepSeek V4.1 Flash was created by DeepSeek.
How much does DeepSeek V4.1 Flash cost?
▼
DeepSeek V4.1 Flash costs $0.03/M input tokens and $0.50/M output tokens.
What is DeepSeek V4.1 Flash API pricing?
▼
The DeepSeek V4.1 Flash API is priced at $0.03 per million input tokens and $0.50 per million output tokens. You can access DeepSeek V4.1 Flash through idapt.app alongside 200+ other AI models in one workspace.
Is DeepSeek V4.1 Flash a reasoning model?
▼
Yes, DeepSeek V4.1 Flash is a reasoning model. It can think step-by-step through complex problems before providing an answer, often yielding better results on difficult tasks like math, coding, and multi-step logic.
Does DeepSeek V4.1 Flash support image or vision input?
▼
Yes, DeepSeek V4.1 Flash supports vision/image input. You can share images in your conversation and the model will analyze and respond based on their content.
Does DeepSeek V4.1 Flash support audio?
▼
No, DeepSeek V4.1 Flash does not support audio input.
What is the context window of DeepSeek V4.1 Flash?
▼
DeepSeek V4.1 Flash has a context window of 1M tokens, meaning it can process approximately 786,432 words of context at once.
Is DeepSeek V4.1 Flash open source?
▼
DeepSeek V4.1 Flash is a proprietary model developed by DeepSeek. The model weights and training data are not publicly available.
What is DeepSeek V4.1 Flash good at?
▼
Based on benchmark data, DeepSeek V4.1 Flash excels at: visual analysis and image understanding. It is DeepSeek's capable model suitable for a wide range of tasks.
Where can I use DeepSeek V4.1 Flash?
▼
You can chat with DeepSeek V4.1 Flash on idapt.app — no separate API key required. idapt is an AI workspace with 200+ models, agents, computers, and tasks. You can also access DeepSeek V4.1 Flash through DeepSeek's own API or platform.