Kimi K3 vs Mistral Small 4: cost per task
Mistral Small 4 is cheaper on 14 of 14 tasks and about 17.7x cheaper on average (geometric mean).
| Task | Kimi K3 | Mistral Small 4 | Difference |
|---|---|---|---|
| Answer a chat question | 1.6¢ | 0.08¢ | 19.6x |
| Reply to a customer email | 4.2¢ | 0.22¢ | 19.5x |
| Write a 1,500-word blog post | 9.2¢ | 0.47¢ | 19.8x |
| Write 10 product descriptions | 3.7¢ | 0.19¢ | 19.4x |
| Translate 1,000 words | 14¢ | 0.75¢ | 19.4x |
| Proofread one page (500 words) | 4.9¢ | 0.26¢ | 19.1x |
| Summarize a 20-page PDF | 3.0¢ | 0.33¢ | 9.0x |
| Extract data from an invoice | 3.2¢ | 0.16¢ | 19.2x |
| Analyze a 200-row spreadsheet | 13¢ | 0.71¢ | 17.9x |
| Answer from 5 retrieved documents (RAG) | 3.9¢ | 0.25¢ | 15.8x |
| Classify 100 support tickets | 8.8¢ | 0.46¢ | 19.1x |
| Review 500 lines of code | 11¢ | 0.62¢ | 17.8x |
| Write a SQL query | 3.8¢ | 0.19¢ | 19.7x |
| Run a 50-step coding agent | $2.24 | 13¢ | 16.7x |
Specs and list prices
| Kimi K3 | Mistral Small 4 | |
|---|---|---|
| Input per 1M | $0.30 | $0.15 |
| Output per 1M | $11.94 | $0.60 |
| Cached input per 1M | $0.21 | $0.015 |
| Context | 1M | 262K |
| Providers | 26 | 4 |
| Reasoning | default | default |
| LMArena Text | 1487 | - |
| Released | Jul 16, 2026 | Mar 16, 2026 |
FAQ
Is Kimi K3 or Mistral Small 4 cheaper?
Mistral Small 4 is cheaper on 14 of 14 tasks and about 17.7x cheaper on average (geometric mean).
How much does Kimi K3 cost compared to Mistral Small 4 per token?
Kimi K3: $0.30 input and $11.94 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.