Mistral: Mistral Large 4 vs DeepSeek: DeepSeek V4.1 Flash (batch)
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-10-07.
| Mistral: Mistral Large 4 | DeepSeek: DeepSeek V4.1 Flash (batch) | |
|---|---|---|
| Vendor | mistralai | deepseek |
| Quality Score | 100 | 100 |
| Benchmark Score | - | 66.3 |
| Input Price | $0.68/M | $0.11/M |
| Output Price | $2.09/M | $0.34/M |
| Context Window | 524,288 | 1,048,576 |
| Max Output | 262,144 | 131,072 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
| Benchmark Scores | ||
| ai_index | - | 65.1 |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, DeepSeek V4.1 Flash (batch) costs $0.20 and Mistral Large 4 costs $1.20, so DeepSeek V4.1 Flash (batch) is about 6.1 times cheaper for the same work.
DeepSeek V4.1 Flash (batch) reads up to 1,048,576 tokens at once, roughly 1,573 pages of text, against about 786 pages for Mistral Large 4.
Across the 20 tasks where they differ, DeepSeek V4.1 Flash (batch) on 20 (SQL Generation, Code Review, Code Completion and others).
Mistral Large 4 was released in October 2026 and DeepSeek V4.1 Flash (batch) in September 2026.
Pick DeepSeek V4.1 Flash (batch) if you need lower cost, long documents or the stronger all-round task scores.
Costs use current list prices per million tokens; page counts assume about 0.75 words per token and 500 words per page.
Who wins by task?
| Task | Mistral: Mistral Large 4 | DeepSeek: DeepSeek V4.1 Flash (batch) |
|---|---|---|
| SQL Generation | 133 | 141 |
| Code Review | 132 | 144 |
| Code Completion | 131 | 133 |
| Code Refactoring | 136 | 146 |
| Bug Fixing | 136 | 148 |
| Unit Test Generation | 124 | 131 |
| Code Documentation | 131 | 137 |
| Regex Writing | 119 | 126 |
| CI/CD Pipelines | 120 | 127 |
| Frontend Component Design | 122 | 129 |
| Data Analysis | 124 | 133 |
| CSV / Spreadsheet Cleanup | 133 | 136 |
| ETL Scripting | 128 | 137 |
| JSON Extraction | 131 | 131 |
| Bulk Data Labeling | 129 | 129 |
| OCR / Document Parsing | 131 | 134 |
| Table Extraction from PDFs | 131 | 134 |
| Long-Document Summarization | 137 | 148 |
| Short-Form Summarization | 123 | 127 |
| Blog Post Writing | 121 | 129 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →