DeepSeek-V4-Flash-0423 (Reasoning)

by DeepSeek

DeepSeek-V4-Flash-0423 (Reasoning) is a reasoning model from DeepSeek, released on April 23, 2026. It has a 1M-token context window and can generate up to 1M output tokens. API pricing is $0.09 per 1M input tokens and $0.18 per 1M output tokens. It ranks #60 of 220 models by Intelligence Score with a score of 35.9.

DeepSeek-V4-Flash-0423 is the preview release of DeepSeek-V4-Flash, a 284B-parameter MoE model with 13B activated parameters and a 1M-token context window, evaluated here at the default high reasoning effort. It shares the V4 series' hybrid attention architecture combining Compressed Sparse Attention (CSA) and Heavily Compressed Attention (HCA) for dramatically improved long-context efficiency, Manifold-Constrained Hyper-Connections (mHC) for stable signal propagation, and the Muon optimizer for faster convergence. Pre-trained on more than 32T tokens and post-trained with a two-stage paradigm of domain-specific expert cultivation followed by on-policy distillation, V4-Flash offers reasoning capabilities that closely approach V4-Pro with faster responses and highly cost-effective pricing.

Key specs

Compare on the AI leaderboard · All AI models

More models from DeepSeek

• DeepSeek-V4.1-Flash (Reasoning) — DeepSeek
• DeepSeek-V4-Pro-0813 (Reasoning) — DeepSeek
• DeepSeek-V4-Flash-Vision-Exp (Reasoning) — DeepSeek
• DeepSeek-V3.2 (Thinking) (Reasoning) — DeepSeek
• DeepSeek-R1-0528 — DeepSeek
• DeepSeek R1 Zero — DeepSeek