Gemini 3.1 Pro Preview vs Mistral Small 4: cost per task
Mistral Small 4 is cheaper on 14 of 14 tasks and about 14.5x cheaper on average (geometric mean).
| Task | Gemini 3.1 Pro Preview | Mistral Small 4 | Difference |
|---|---|---|---|
| Answer a chat question | 2.1¢ | 0.08¢ | 25.7x |
| Reply to a customer email | 0.97¢ | 0.22¢ | 4.5x |
| Write a 1,500-word blog post | 5.0¢ | 0.47¢ | 10.6x |
| Write 10 product descriptions | 3.9¢ | 0.19¢ | 20.7x |
| Translate 1,000 words | 11¢ | 0.75¢ | 14.5x |
| Proofread one page (500 words) | 3.6¢ | 0.26¢ | 13.8x |
| Summarize a 20-page PDF | 4.6¢ | 0.33¢ | 13.8x |
| Extract data from an invoice | 3.2¢ | 0.16¢ | 19.4x |
| Analyze a 200-row spreadsheet | 7.5¢ | 0.71¢ | 10.6x |
| Answer from 5 retrieved documents (RAG) | 3.3¢ | 0.25¢ | 13.4x |
| Classify 100 support tickets | 9.4¢ | 0.46¢ | 20.4x |
| Review 500 lines of code | 11¢ | 0.62¢ | 18.5x |
| Write a SQL query | 3.2¢ | 0.19¢ | 16.5x |
| Run a 50-step coding agent | $1.95 | 13¢ | 14.5x |
Specs and list prices
| Gemini 3.1 Pro Preview | Mistral Small 4 | |
|---|---|---|
| Input per 1M | $2.00 | $0.15 |
| Output per 1M | $12.00 | $0.60 |
| Cached input per 1M | $0.20 | $0.015 |
| Context | 1M | 262K |
| Providers | 6 | 4 |
| Reasoning | always | default |
| LMArena Text | 1487 | - |
| Released | Feb 19, 2026 | Mar 16, 2026 |
FAQ
Is Gemini 3.1 Pro Preview or Mistral Small 4 cheaper?
Mistral Small 4 is cheaper on 14 of 14 tasks and about 14.5x cheaper on average (geometric mean).
How much does Gemini 3.1 Pro Preview cost compared to Mistral Small 4 per token?
Gemini 3.1 Pro Preview: $2.00 input and $12.00 output per 1M tokens. Mistral Small 4: $0.15 input and $0.60 output. Token prices alone mislead - models use different numbers of tokens for the same task, which is what the task table shows.