Contribute your creativityDeepSeek V4.1-Flash or Mistral Large 4? A side-by-side look at size, openness and availability.
| DeepSeek | Mistral | |
|---|---|---|
| Latest model | V4.1-Flash (September 10, 2026) | Mistral Large 4 (public preview October 6, 2026) |
| Size | 552B-parameter mixture-of-experts | 1 trillion parameters, 49 billion active |
| Multimodal | Native visual understanding | Natively multimodal |
| Openness | Earlier V4 models were open-sourced; check the V4.1 licence | Open weights promised by the end of October 2026 |
| Access | DeepSeek API as deepseek-flash | Preview API in Mistral Studio |
| Status | Available now; V4-Pro is being phased out | Preview until the final release |
DeepSeek V4.1-Flash is available now through an inexpensive API. Mistral Large 4 is a preview whose open weights are still to come. Developers who need weights should wait for the release.
Both are open-leaning labs with large mixture-of-experts models. The practical difference today is that one is available and the other is previewing.
Run the same coding task and the same chart-reading task in both and compare accuracy and cost.
Read the reviews of DeepSeek and Mistral, see the AI model tracker for versions and sources, or browse all comparisons.