AI Development

DeepSeek updates V4-Flash API to DeepSeek-V4-Flash-0731 official version

July 31, 2026 · Medium importance · model

DeepSeek's official API documentation states that the deepseek-v4-flash model has been updated to DeepSeek-V4-Flash-0731 while keeping the same calling method. The model remains a 284B total / 13B active parameter mixture-of-experts system with 1M context support, dual thinking modes, and compatibility with OpenAI and Anthropic API formats. This formalizes the post-training upgrades for agent capabilities on the existing architecture.

Date
July 31, 2026
Importance
Medium 3/5
Category
model
Axis of Change
Capability Gain
Organizations
DeepSeek
Models Affected
DeepSeek-V4-Flash DeepSeek-V4-Flash-0731
  1. 01 api-docs.deepseek.com
  2. 02 api-docs.deepseek.com