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DeepSeek

(Hangzhou, China)

www.deepseek.com

Open-source frontier champion famous for DeepSeek-V4 massive MoE architecture (1.6T parameters) and DSpark speculative decoding.

5 MODELS TRACKED1 OPEN WEIGHTSNEWEST: DEEPSEEK V4.1 FLASH BETA · YESTERDAY

Complete Release History

NEWEST FIRST
01
DeepSeek V4.1 Flash BetaEXPIRES SEPT 10

Limited 2-day intermediate beta (Sept 8-10, 2026) of DeepSeek's re-architected V4.1 Flash with native image+text input. Call via model ID deepseek-v4.1-flash-expires-on-0910 at V4 Flash rates, capped at 20 concurrent requests per account; no official benchmarks published.

02
DeepSeek V4 Flash Vision ExpOPEN WEIGHTS (MIT)

Open-sourced under MIT license on August 30, 2026. 305B parameter multimodal vision-language model with native document understanding.

03
DeepSeek V4-Pro (0813)1.6T HOSTED SOTA• Flagship

DeepSeek's primary 1.6T parameter powerhouse with 49B activated per token, configurable thinking budget, and 1M context.

04
DeepSeek V4 Flash 0731VOLUME LEADER

Largest trailing-30-day total on OpenRouter (49.9T tokens); the default cost-first agent model at $0.09/M input with 1M context.

05
DeepSeek V4 Flash 0423BUDGET WORKHORSE

Prior Flash checkpoint with durable 22T+ monthly volume; identical budget pricing for pinned production deployments.