# Claude 2.1 vs Inkling

> Inkling is the stronger model overall, scoring 44.1 to 25.2 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-2-1-vs-inkling
- Last updated: 2026-10-11
- Shared benchmarks: 5

## Summary

- They share 5 benchmarks with published results for both. Claude 2.1 scores higher in 0 categories and Inkling in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Inkling leads 55.1 to 15.4.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 1.9% for Claude 2.1 and 88.9% for Inkling.
- Inkling has downloadable open weights; the other is API-only.

## Snapshot

| | Claude 2.1 | Inkling |
|---|---|---|
| Provider | Anthropic | Thinking Machines Lab |
| Noometry Index | 25.2 | 44.1 |
| Rank | 345 | 80 |
| Context | — | 66K |
| Input $/M | — | $1.87 |
| Output $/M | — | $4.68 |
| Weights | Proprietary | Open |

## Coding

- Claude 2.1: 26.2 (#327)
- Inkling: 34.5 (#234)

| Benchmark | Claude 2.1 | Inkling |
|---|---|---|
| WeirdML | 7.1% | 32.3% |
| FrontierCode | — | 14% |
| LMArena WebDev | — | 1413 |
| FrontierSWE | — | 4.1% |
| SciCode | — | 47% |
| LMArena Coding | — | 1464 |
| ALE-Bench | — | 946 |

## Agentic & Tool Use

- Claude 2.1: —
- Inkling: 29.6 (#85)

| Benchmark | Claude 2.1 | Inkling |
|---|---|---|
| APEX-Agents | — | 33.8% |
| τ²-bench Banking | — | 25% |

## Reasoning

- Claude 2.1: 21.4 (#221)
- Inkling: 40.4 (#56)

| Benchmark | Claude 2.1 | Inkling |
|---|---|---|
| DTBench | 51% | 87.5% |
| Epoch Capabilities Index | 119.27 | 148.54 |
| ARC-AGI-2 | — | 36.5% |
| SimpleBench | — | 50% |
| ARC-AGI-1 | — | 79.5% |
| CritPt | — | 5.4% |
| Chess Puzzles | — | 21% |
| LMArena Hard Prompts | — | 1451 |
| LMCA | — | 37.6% |
| ForecastBench | 54.2 | — |

## Math

- Claude 2.1: 10.2 (#315)
- Inkling: 31.3 (#225)

| Benchmark | Claude 2.1 | Inkling |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 1.9% | 88.9% |
| FrontierMath (Tiers 1-3) | — | 33.3% |
| FrontierMath Tier 4 | — | 4.9% |
| ProofBench | — | 0% |
| LMArena Math | — | 1479 |

## Knowledge

- Claude 2.1: 15.4 (#292)
- Inkling: 55.1 (#49)

| Benchmark | Claude 2.1 | Inkling |
|---|---|---|
| GPQA Diamond | 33% | 88.3% |
| SimpleQA Verified | — | 40.3% |
| LMArena Expert | — | 1465 |
| MMLU | 73.5% | — |

## Multilingual

- Claude 2.1: —
- Inkling: 54.0 (#52)

| Benchmark | Claude 2.1 | Inkling |
|---|---|---|
| LMArena Non-English | — | 1434 |
| LMArena Chinese | — | 1490 |
| LMArena French | — | 1458 |
| LMArena German | — | 1446 |
| LMArena Japanese | — | 1429 |
| LMArena Korean | — | 1404 |
| LMArena Russian | — | 1429 |
| LMArena Spanish | — | 1448 |

## Instruction Following

- Claude 2.1: —
- Inkling: 75.1 (#71)

| Benchmark | Claude 2.1 | Inkling |
|---|---|---|
| LMArena Instruction Following | — | 1426 |

## Long Context

- Claude 2.1: —
- Inkling: 43.8 (#86)

| Benchmark | Claude 2.1 | Inkling |
|---|---|---|
| LMArena Longer Query | — | 1434 |

## Writing & Preference

- Claude 2.1: —
- Inkling: 65.2 (#51)

| Benchmark | Claude 2.1 | Inkling |
|---|---|---|
| LMArena Text | — | 1441 |
| LMArena Creative Writing | — | 1387 |
| EQ-Bench Creative Writing | — | 1611 |
| EQ-Bench 4 | — | 1226 |
| LMArena Multi-Turn | — | 1436 |

## FAQ

### Is Claude 2.1 better than Inkling?

Inkling is the stronger model overall, scoring 44.1 to 25.2 on the Noometry Index.

### Is Claude 2.1 or Inkling better for coding?

Inkling scores higher on coding benchmarks: 34.5 versus 26.2 in the Noometry coding category.

### How many benchmarks do Claude 2.1 and Inkling share?

5 benchmarks have published results for both models. Claude 2.1 has 7 scored results on Noometry and Inkling has 41.