# Claude Haiku 5.5 vs Inkling

> Claude Haiku 5.5 is the stronger model overall, scoring 49.5 to 44.1 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-haiku-5-5-vs-inkling
- Last updated: 2026-10-10
- Shared benchmarks: 6

## Summary

- They share 6 benchmarks with published results for both. Claude Haiku 5.5 scores higher in 2 categories and Inkling in 2 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Haiku 5.5 leads 73.6 to 31.3.
- The biggest single-benchmark swing is FrontierMath (Tiers 1-3): 75.1% for Claude Haiku 5.5 and 33.3% for Inkling.
- Claude Haiku 5.5 is cheaper at $0.10 / $0.50 per million input/output tokens, against $1.87 / $4.68 for Inkling.
- Claude Haiku 5.5 accepts more context: 1M tokens versus 66K.
- Inkling has downloadable open weights; the other is API-only.

## Snapshot

| | Claude Haiku 5.5 | Inkling |
|---|---|---|
| Provider | Anthropic | Thinking Machines Lab |
| Noometry Index | 49.5 | 44.1 |
| Rank | 52 | 80 |
| Context | 1M | 66K |
| Input $/M | $0.10 | $1.87 |
| Output $/M | $0.50 | $4.68 |
| Weights | Proprietary | Open |

## Coding

- Claude Haiku 5.5: 49.2 (#50)
- Inkling: 34.5 (#234)

| Benchmark | Claude Haiku 5.5 | Inkling |
|---|---|---|
| LMArena WebDev | 1587 | 1413 |
| FrontierCode | — | 14% |
| FrontierSWE | — | 4.1% |
| SciCode | — | 47% |
| WeirdML | — | 32.3% |
| LMArena Coding | — | 1464 |
| ALE-Bench | — | 946 |

## Agentic & Tool Use

- Claude Haiku 5.5: —
- Inkling: 29.6 (#85)

| Benchmark | Claude Haiku 5.5 | Inkling |
|---|---|---|
| APEX-Agents | — | 33.8% |
| τ²-bench Banking | — | 25% |

## Reasoning

- Claude Haiku 5.5: 35.2 (#69)
- Inkling: 40.4 (#56)

| Benchmark | Claude Haiku 5.5 | Inkling |
|---|---|---|
| ARC-AGI-2 | — | 36.5% |
| SimpleBench | — | 50% |
| NYT Connections (extended) | 65.7% | — |
| ARC-AGI-1 | — | 79.5% |
| CritPt | — | 5.4% |
| Chess Puzzles | — | 21% |
| LMArena Hard Prompts | — | 1451 |
| Mystery Game Puzzles | 30% | — |
| DTBench | — | 87.5% |
| LMCA | — | 37.6% |
| Epoch Capabilities Index | — | 148.54 |

## Math

- Claude Haiku 5.5: 73.6 (#18)
- Inkling: 31.3 (#225)

| Benchmark | Claude Haiku 5.5 | Inkling |
|---|---|---|
| FrontierMath (Tiers 1-3) | 75.1% | 33.3% |
| FrontierMath Tier 4 | 46.3% | 4.9% |
| OTIS Mock AIME 2024-2025 | 98.9% | 88.9% |
| ProofBench | — | 0% |
| LMArena Math | — | 1479 |

## Knowledge

- Claude Haiku 5.5: 50.8 (#70)
- Inkling: 55.1 (#49)

| Benchmark | Claude Haiku 5.5 | Inkling |
|---|---|---|
| GPQA Diamond | 89.6% | 88.3% |
| SimpleQA Verified | 23.8% | 40.3% |
| LMArena Expert | — | 1465 |

## Multimodal

- Claude Haiku 5.5: 43.7 (#21)
- Inkling: —

| Benchmark | Claude Haiku 5.5 | Inkling |
|---|---|---|
| Furniture Assembly | 47.5% | — |

## Multilingual

- Claude Haiku 5.5: —
- Inkling: 54.0 (#52)

| Benchmark | Claude Haiku 5.5 | 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 Haiku 5.5: —
- Inkling: 75.1 (#71)

| Benchmark | Claude Haiku 5.5 | Inkling |
|---|---|---|
| LMArena Instruction Following | — | 1426 |

## Long Context

- Claude Haiku 5.5: —
- Inkling: 43.8 (#86)

| Benchmark | Claude Haiku 5.5 | Inkling |
|---|---|---|
| LMArena Longer Query | — | 1434 |

## Writing & Preference

- Claude Haiku 5.5: —
- Inkling: 65.2 (#51)

| Benchmark | Claude Haiku 5.5 | Inkling |
|---|---|---|
| LMArena Text | — | 1441 |
| LMArena Creative Writing | — | 1387 |
| EQ-Bench Creative Writing | — | 1611 |
| EQ-Bench 4 | — | 1226 |
| LMArena Multi-Turn | — | 1436 |

## FAQ

### Is Claude Haiku 5.5 better than Inkling?

Claude Haiku 5.5 is the stronger model overall, scoring 49.5 to 44.1 on the Noometry Index.

### Which is cheaper, Claude Haiku 5.5 or Inkling?

Claude Haiku 5.5 is cheaper. It lists at $0.10 per million input tokens and $0.50 per million output tokens; Inkling lists at $1.87 and $4.68.

### Is Claude Haiku 5.5 or Inkling better for coding?

Claude Haiku 5.5 scores higher on coding benchmarks: 49.2 versus 34.5 in the Noometry coding category.

### Which has the bigger context window?

Claude Haiku 5.5 does, with 1M tokens against 66K.

### How many benchmarks do Claude Haiku 5.5 and Inkling share?

6 benchmarks have published results for both models. Claude Haiku 5.5 has 9 scored results on Noometry and Inkling has 41.