# Claude Fable 5 vs Mistral Small

> Claude Fable 5 is the stronger model overall, scoring 66.8 to 33.4 on the Noometry Index. Mistral Small costs 76× less per token, which makes it the better buy when Claude Fable 5's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/claude-fable-5-vs-mistral-small
- Last updated: 2026-10-10
- Shared benchmarks: 26

## Summary

- They share 26 benchmarks with published results for both. Claude Fable 5 scores higher in 10 categories and Mistral Small in 0 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Fable 5 leads 88.5 to 16.4.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 100% for Claude Fable 5 and 5.8% for Mistral Small.
- Mistral Small is cheaper at $0.15 / $0.60 per million input/output tokens, against $10 / $50 for Claude Fable 5.
- Claude Fable 5 accepts more context: 1M tokens versus 262K.
- Mistral Small has downloadable open weights; the other is API-only.

## Snapshot

| | Claude Fable 5 | Mistral Small |
|---|---|---|
| Provider | Anthropic | Mistral AI |
| Noometry Index | 66.8 | 33.4 |
| Rank | 5 | 243 |
| Context | 1M | 262K |
| Input $/M | $10 | $0.15 |
| Output $/M | $50 | $0.60 |
| Weights | Proprietary | Open |

## Coding

- Claude Fable 5: 70.6 (#4)
- Mistral Small: 34.0 (#247)

| Benchmark | Claude Fable 5 | Mistral Small |
|---|---|---|
| SciCode | 61% | 26.5% |
| LMArena Coding | 1519 | 1362 |
| ALE-Bench | 2,041 | 497.62 |
| DeepSWE | 69.9% | — |
| FrontierCode | 53.5% | — |
| LMArena WebDev | 1625 | — |
| FrontierSWE | 47% | — |
| GSO | 78.4% | — |
| WeirdML | 91.9% | — |
| BigCodeBench Instruct | — | 36.1% |
| LiveBench Coding | — | 36.2% |
| MirrorCode | 63.9% | — |
| BigCodeBench Complete | — | 46.6% |

## Agentic & Tool Use

- Claude Fable 5: 54.0 (#2)
- Mistral Small: 28.1 (#93)

| Benchmark | Claude Fable 5 | Mistral Small |
|---|---|---|
| APEX-Agents | 63.6% | — |
| Berkeley Function Calling Leaderboard | — | 37.1% |
| Remote Labor Index | 16.1% | — |
| τ²-bench Banking | 39.7% | — |
| PostTrainBench | 41.8% | — |
| GBAEval | 74.5% | — |
| GDP.pdf | 30% | — |
| LMArena Search | 1230 | — |
| Vending-Bench 2 | 5,680 | — |

## Reasoning

- Claude Fable 5: 76.8 (#6)
- Mistral Small: 19.8 (#250)

| Benchmark | Claude Fable 5 | Mistral Small |
|---|---|---|
| Kagi LLM Benchmark | 91.4% | 37.8% |
| CritPt | 28.6% | 0% |
| LMArena Hard Prompts | 1508 | 1335 |
| DTBench | 98.4% | 70.9% |
| LMCA | 61.1% | 20.6% |
| ARC-AGI-2 | 89.2% | — |
| SimpleBench | 81.9% | — |
| NYT Connections (extended) | 92.7% | — |
| ARC-AGI-1 | 98.5% | — |
| Chess Puzzles | 41% | — |
| EnigmaEval | 39.3% | — |
| EBR-Bench | 39.5% | — |
| LiveBench Reasoning | — | 44.8% |
| Mystery Game Puzzles | 52% | — |
| LiveBench Data Analysis | — | 53.7% |
| Surface Evolver Bench | 95% | — |
| Bench to the Future 3 | 0.13 | — |
| Epoch Capabilities Index | 162.06 | — |
| LiveBench | — | 44% |

## Math

- Claude Fable 5: 88.5 (#5)
- Mistral Small: 16.4 (#293)

| Benchmark | Claude Fable 5 | Mistral Small |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 100% | 5.8% |
| LMArena Math | 1519 | 1341 |
| FrontierMath (Tiers 1-3) | 87% | — |
| FrontierMath Tier 4 | 90.2% | — |
| ProofBench | 95% | — |
| LiveBench Math | — | 39.9% |
| MATH Level 5 | — | 46.8% |
| FrontierMath Erdős | 0% | — |

## Knowledge

- Claude Fable 5: 62.2 (#25)
- Mistral Small: 31.0 (#222)

| Benchmark | Claude Fable 5 | Mistral Small |
|---|---|---|
| GPQA Diamond | 85.9% | 47.5% |
| LMArena Expert | 1534 | 1291 |
| SimpleQA Verified | 70.7% | — |
| Vectara Hallucination Rate | — | 5.1% |
| MMLU | — | 68.7% |

## Multimodal

- Claude Fable 5: 45.3 (#17)
- Mistral Small: 33.5 (#96)

| Benchmark | Claude Fable 5 | Mistral Small |
|---|---|---|
| LMArena Vision | 1324 | 1142 |
| Blueprint-Bench 2 | 38.6% | — |
| Furniture Assembly | 35.8% | — |
| LMArena Document | 1496 | — |

## Multilingual

- Claude Fable 5: 57.3 (#9)
- Mistral Small: 45.5 (#169)

| Benchmark | Claude Fable 5 | Mistral Small |
|---|---|---|
| LMArena Non-English | 1481 | 1315 |
| LMArena Chinese | 1543 | 1340 |
| LMArena French | 1505 | 1337 |
| LMArena German | 1486 | 1340 |
| LMArena Japanese | 1506 | 1275 |
| LMArena Korean | 1488 | 1259 |
| LMArena Russian | 1504 | 1324 |
| LMArena Spanish | 1498 | 1346 |

## Instruction Following

- Claude Fable 5: 78.6 (#8)
- Mistral Small: 66.4 (#209)

| Benchmark | Claude Fable 5 | Mistral Small |
|---|---|---|
| LMArena Instruction Following | 1502 | 1310 |
| LiveBench Instruction Following | — | 63.7% |

## Long Context

- Claude Fable 5: 46.3 (#23)
- Mistral Small: 40.4 (#156)

| Benchmark | Claude Fable 5 | Mistral Small |
|---|---|---|
| LMArena Longer Query | 1509 | 1327 |

## Writing & Preference

- Claude Fable 5: 75.9 (#5)
- Mistral Small: 52.5 (#171)

| Benchmark | Claude Fable 5 | Mistral Small |
|---|---|---|
| LMArena Text | 1491 | 1338 |
| LMArena Creative Writing | 1494 | 1305 |
| LMArena Multi-Turn | 1504 | 1344 |
| EQ-Bench Creative Writing | 1943 | — |
| EQ-Bench 4 | 1340 | — |
| LiveBench Language | — | 30.5% |

## FAQ

### Is Claude Fable 5 better than Mistral Small?

Claude Fable 5 is the stronger model overall, scoring 66.8 to 33.4 on the Noometry Index. Mistral Small costs 76× less per token, which makes it the better buy when Claude Fable 5's lead doesn't matter for your workload.

### Which is cheaper, Claude Fable 5 or Mistral Small?

Mistral Small is cheaper. It lists at $0.15 per million input tokens and $0.60 per million output tokens; Claude Fable 5 lists at $10 and $50.

### Is Claude Fable 5 or Mistral Small better for coding?

Claude Fable 5 scores higher on coding benchmarks: 70.6 versus 34.0 in the Noometry coding category.

### Which has the bigger context window?

Claude Fable 5 does, with 1M tokens against 262K.

### How many benchmarks do Claude Fable 5 and Mistral Small share?

26 benchmarks have published results for both models. Claude Fable 5 has 62 scored results on Noometry and Mistral Small has 39.