DeepSeek V4 Flash vs Mistral Large 3

Choose DeepSeek V4 Flash if you want cheap, high-volume open-weight agent steps. Choose Mistral Large 3 if you want general-purpose open-weight agent work, especially in the EU.

In our editorial scoring, DeepSeek V4 Flash leads in 5 of five dimensions (output quality, agentic ability, speed, value for $ and reliability), while Mistral Large 3 leads in 0. On price, DeepSeek V4 Flash runs about $0.12 per 1M tokens (blended) and is open-weight; Mistral Large 3 is about $0.80 and open-weight.

The model is half the story — the agent is the other half

The model picks the moves; the agent runs the loop, the tools, and the guardrails. Once you've chosen a model, see which agent gets the most out of it.