DeepSeek V4.1 Flash
High-throughput software engineering, autonomous coding loops, terminal agents, 1M long-context retrieval, and low-cost production inference.
SWE-bench Verified
67.2%
MMLU-Pro
78.4%
MATH-500
92.6%
Context Window
1,000,000 tokens
| Specification | Value |
|---|---|
| Developer / Lab | DeepSeek-AI |
| Parameters Total | 552B |
| Parameters Active | 8B input / 16B output |
| Architecture Type | Asymmetric Causal Encoder-Decoder MoE + Multi-Head Latent Attention v2 |
| License | Open-Weights (MIT / Modified Permissive) & Commercial API |
| Input Pricing (per 1M) | $0.06 |
| Output Pricing (per 1M) | $0.22 |