DeepSeek V4.1 Flash

deepseek/deepseek-v4.1-flash

DeepSeek V4.1 Flash is an open-weight multimodal model that accepts text and images and generates text. The official model card documents a one-million-token context window, a mixture-of-experts architecture, and MIT-licensed weights.

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Context window: 1M
Input: Image · Text
Output: Text
Released: 2026-09-10

Weights: Open
License: MIT

Pricing

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Performance

Overall capability

55.5/100

Coding: 52.3
Reasoning: 51.4
Professional work: 55.0
Knowledge & language: 58.4


SimpleQA Verified	Knowledge & language	Epoch AI	2026-11-05
Chess Puzzles	Reasoning	Epoch AI	2026-11-05
AA-Analyst AgentDeepSeek V4.1 Flash (Max)	Professional work	Artificial Analysis	2026-11-05
APEX-Agents 1.1	Professional work	Mercor	2026-11-05
MLCR-AA（Artificial Analysis）DeepSeek V4.1 Flash (Max)	Knowledge & language	Artificial Analysis	2026-11-05
Terminal-Bench Science · AADeepSeek V4.1 Flash (Max)	Reasoning	Artificial Analysis	2026-11-05
Terminal-Bench 4.0 (Vals rerun)	Coding	Vals AI	2026-11-05
ProgramBench	Coding	Vals AI	2026-11-05

Providers

							Cache write
OpenRouter	deepseek/deepseek-v4.1-flash	Openai chat	global				-

ModelRegistry · Catalog updated 2026-11-05