Claude Fable 5.1 vs Mistral Small 4: cost per task
Mistral Small 4 is cheaper on 14 of 14 tasks and about 36.5x cheaper on average (geometric mean).
| Task | Claude Fable 5.1 | Mistral Small 4 | Difference |
|---|---|---|---|
| Answer a chat question | 6.3¢ | 0.08¢ | 76.2x |
| Reply to a customer email | 2.0¢ | 0.22¢ | 9.2x |
| Write a 1,500-word blog post | 18¢ | 0.47¢ | 39.2x |
| Write 10 product descriptions | 22¢ | 0.19¢ | 116.8x |
| Translate 1,000 words | 13¢ | 0.75¢ | 17.1x |
| Proofread one page (500 words) | 5.6¢ | 0.26¢ | 21.4x |
| Summarize a 20-page PDF | 22¢ | 0.33¢ | 67.4x |
| Extract data from an invoice | 5.2¢ | 0.16¢ | 31.2x |
| Analyze a 200-row spreadsheet | 85¢ | 0.71¢ | 119.7x |
| Answer from 5 retrieved documents (RAG) | 14¢ | 0.25¢ | 55.0x |
| Classify 100 support tickets | 4.5¢ | 0.46¢ | 9.6x |
| Review 500 lines of code | 40¢ | 0.62¢ | 64.6x |
| Write a SQL query | 5.5¢ | 0.19¢ | 28.6x |
| Run a 50-step coding agent | $3.46 | 13¢ | 25.7x |
Specs and list prices
| Claude Fable 5.1 | Mistral Small 4 | |
|---|---|---|
| Input per 1M | $10.00 | $0.15 |
| Output per 1M | $50.00 | $0.60 |
| Cached input per 1M | $0.25 | $0.015 |
| Context | 1M | 262K |
| Providers | 4 | 4 |
| Reasoning | always | default |
| LMArena Text | 1502 | - |
| Released | Sep 1, 2026 | Mar 16, 2026 |
FAQ
Is Claude Fable 5.1 or Mistral Small 4 cheaper?
Mistral Small 4 is cheaper on 14 of 14 tasks and about 36.5x cheaper on average (geometric mean).
How much does Claude Fable 5.1 cost compared to Mistral Small 4 per token?
Claude Fable 5.1: $10.00 input and $50.00 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.