DeepSeek-V4.1-Flash vs Mistral Large 4: Specs & Benchmark Comparison
DeepSeek-V4.1-Flash is developed by DeepSeek, while Mistral Large 4 comes from Mistral AI. DeepSeek-V4.1-Flash was released in September 2026, and Mistral Large 4 followed a month later in October 2026. Mistral Large 4 is the larger model at roughly 1.1 trillion parameters, against 552 billion for DeepSeek-V4.1-Flash.
The two models share 4 published benchmarks. DeepSeek-V4.1-Flash leads on 3 of them, Mistral Large 4 on 1. The widest gaps are on DeepSWE 1.1, where DeepSeek-V4.1-Flash scores 74.2% against 61.7%; CyberGym, where DeepSeek-V4.1-Flash scores 88.1% against 82.0%. Averaged across everything we track, DeepSeek-V4.1-Flash sits at 60.2% and Mistral Large 4 at 60.4%.
DeepSeek-V4.1-Flash is the cheaper API at $0.30 per million input tokens and $1.20 per million output tokens, roughly 2 times cheaper than Mistral Large 4 at $0.68 and $2.09. Both accept a context window of about 1M tokens. Both accept text and images as input.
| Characteristic | DeepSeek-V4.1-Flash | Mistral Large 4 |
|---|---|---|
| Company | DeepSeek | Mistral AI |
| Release Date | September 10, 2026 | October 6, 2026 |
| Parameters | 552B | 1.1T |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | 1.0M |
| Context (output) | 393K | — |
| Input Price / 1M | $0.30 | $0.68 |
| Output Price / 1M | $1.20 | $2.09 |
| Average Score | 60.2% | 60.4% |
| Benchmarks | ||
| DeepSWE 1.1 | 74.2% | 61.7% |
| CyberGym | 88.1% | 82.0% |
| AutomationBench | 54.8% | 59.9% |
| Terminal-Bench 4.0 | 31.2% | 28.3% |
Visual Benchmark Comparison
Verdict
Both models show equal results — the choice depends on your specific use case.
Both models show comparable average scores: DeepSeek-V4.1-Flash — 0.6, Mistral Large 4 — 0.6.
DeepSeek-V4.1-Flash is 1.8x cheaper: input $0.30/1M vs $0.68/1M tokens.
Same context size: 1M tokens.
Mistral Large 4 is newer: released 10/6/2026 vs 9/10/2026.
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Frequently Asked Questions
Which is better for coding — DeepSeek-V4.1-Flash or Mistral Large 4?
Which model is cheaper — DeepSeek-V4.1-Flash or Mistral Large 4?
Which has a larger context window — DeepSeek-V4.1-Flash or Mistral Large 4?
The DeepSeek-V4.1-Flash and Mistral Large 4 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the DeepSeek-V4.1-Flash or Mistral Large 4 page. See also the complete list of AI model comparisons.