DeepSeek V4 Flash Ships GA and Beats Its Own Pro Preview

1Key Takeaways

• Originally published on AI Tech Connect .
• What changed on 31 July DeepSeek pushed DeepSeek-V4-Flash-0731 into public beta on 31 July 2026.
• The model is a sparse Mixture-of-Experts with 284B total parameters and 13B active parameters per token, a context window of 1,048,576 tokens and a maximum output of 65,536 tokens.
• It sits in the V4 family alongside the Pro line, sharing that family's hybrid attention design — Compressed Sparse Attention paired with Heavily Compressed Attention, mHC….