Mistral: Mistral Large 4 vs OpenAI: GPT Luna Latest
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-10-07.
| Mistral: Mistral Large 4 | OpenAI: GPT Luna Latest | |
|---|---|---|
| Vendor | mistralai | ~openai |
| Quality Score | 100 | 100 |
| Input Price | $0.68/M | $0.10/M |
| Output Price | $2.09/M | $0.50/M |
| Context Window | 524,288 | 1,050,000 |
| Max Output | 262,144 | 128,000 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, GPT Luna Latest costs $0.23 and Mistral Large 4 costs $1.20, so GPT Luna Latest is about 5.3 times cheaper for the same work.
GPT Luna Latest reads up to 1,050,000 tokens at once, roughly 1,575 pages of text, against about 786 pages for Mistral Large 4.
Across the 10 tasks where they differ, GPT Luna Latest on 10 (SQL Generation, Code Completion, Code Documentation and others).
Mistral Large 4 was released in October 2026 and GPT Luna Latest in September 2026.
Pick GPT Luna Latest 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 | OpenAI: GPT Luna Latest |
|---|---|---|
| SQL Generation | 133 | 133 |
| Code Completion | 131 | 131 |
| Code Documentation | 131 | 131 |
| Regex Writing | 119 | 119 |
| CSV / Spreadsheet Cleanup | 133 | 133 |
| JSON Extraction | 131 | 131 |
| Bulk Data Labeling | 129 | 129 |
| Long-Document Summarization | 137 | 137 |
| Short-Form Summarization | 123 | 123 |
| Blog Post Writing | 121 | 121 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →