DeepSeek V4.1 Flash
active
DeepSeek2026-09-10
Specifications
Modalities
text
image
Context Window1000K tokens
Max Output-
Training Cutoff-
Open SourceYes
Pricing (per 1M tokens)
Input$0.3000
Output$1.2000
Cache Read$0.0060
Benchmarks
Arena score (text)1476
Arena ratings: LMArena leaderboard dataset, CC BY 4.0, snapshot 2026-10-28.
MMLU-Pro-
SWE-Bench-
GPQA Diamond-
HumanEval-
ARC-AGI-
MATH-
API
Model ID
deepseek-flashSources
- DeepSeek: Change Log
release date, model id · as of 2026-11-02
- Hugging Face: deepseek-ai/DeepSeek-V4.1-Flash-1017 model card
modalities, context window, is open source, license · as of 2026-11-02
- DeepSeek: DeepSeek-V4.1-Flash-1017 Release
version · as of 2026-10-17
- LMArena: Arena leaderboard dataset, text_style_control overall: DeepSeek-V4.1-Flash-20260910 (Max)
elo rating · as of 2026-10-28
- DeepSeek: Models & Pricing (peak rate; the off-peak rate is half)
price input, price output, price cache read · as of 2026-11-03