# Claude Sonnet 5.5 vs GLM-4.5V

> Claude Sonnet 5.5 is the stronger model overall, scoring 60.5 to 39.2 on the Noometry Index. GLM-4.5V costs 4.4× less per token, which makes it the better buy when Claude Sonnet 5.5's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/claude-sonnet-5-5-vs-glm-4-5v
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in math, where Claude Sonnet 5.5 leads 88.7 to 34.7.
- GLM-4.5V is cheaper at $0.60 / $1.80 per million input/output tokens, against $2 / $10 for Claude Sonnet 5.5.
- Claude Sonnet 5.5 accepts more context: 1M tokens versus 64K.
- GLM-4.5V has downloadable open weights; the other is API-only.

## Snapshot

| | Claude Sonnet 5.5 | GLM-4.5V |
|---|---|---|
| Provider | Anthropic | Z.ai (Zhipu) |
| Noometry Index | 60.5 | 39.2 |
| Rank | 10 | 158 |
| Context | 1M | 64K |
| Input $/M | $2 | $0.60 |
| Output $/M | $10 | $1.80 |
| Weights | Proprietary | Open |

## Coding

- Claude Sonnet 5.5: 65.5 (#6)
- GLM-4.5V: 38.9 (#152)

| Benchmark | Claude Sonnet 5.5 | GLM-4.5V |
|---|---|---|
| FrontierCode | 52.1% | — |
| CursorBench | 55.5% | — |
| LMArena WebDev | 1699 | — |
| FrontierSWE | 61.9% | — |
| SciCode | 61% | — |
| LMArena Coding | — | 1347 |
| ALE-Bench | 1,819 | — |

## Agentic & Tool Use

- Claude Sonnet 5.5: 44.9 (#14)
- GLM-4.5V: —

| Benchmark | Claude Sonnet 5.5 | GLM-4.5V |
|---|---|---|
| APEX-Agents | 75.5% | — |

## Reasoning

- Claude Sonnet 5.5: 52.4 (#29)
- GLM-4.5V: 26.5 (#118)

| Benchmark | Claude Sonnet 5.5 | GLM-4.5V |
|---|---|---|
| Kagi LLM Benchmark | — | 59.8% |
| CritPt | 31.4% | — |
| LMArena Hard Prompts | — | 1335 |
| Mystery Game Puzzles | 65% | — |

## Math

- Claude Sonnet 5.5: 88.7 (#4)
- GLM-4.5V: 34.7 (#157)

| Benchmark | Claude Sonnet 5.5 | GLM-4.5V |
|---|---|---|
| FrontierMath (Tiers 1-3) | 88.8% | — |
| FrontierMath Tier 4 | 80.5% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| ProofBench | 100% | — |
| LMArena Math | — | 1353 |

## Knowledge

- Claude Sonnet 5.5: 66.0 (#11)
- GLM-4.5V: 36.8 (#155)

| Benchmark | Claude Sonnet 5.5 | GLM-4.5V |
|---|---|---|
| GPQA Diamond | 95.6% | — |
| SimpleQA Verified | 46.5% | — |
| LMArena Expert | — | 1353 |

## Multimodal

- Claude Sonnet 5.5: 53.2 (#5)
- GLM-4.5V: 33.6 (#86)

| Benchmark | Claude Sonnet 5.5 | GLM-4.5V |
|---|---|---|
| LMArena Vision | — | 1154 |
| Furniture Assembly | 75% | — |

## Multilingual

- Claude Sonnet 5.5: —
- GLM-4.5V: 44.9 (#172)

| Benchmark | Claude Sonnet 5.5 | GLM-4.5V |
|---|---|---|
| LMArena Non-English | — | 1304 |
| LMArena Chinese | — | 1338 |
| LMArena Russian | — | 1299 |
| LMArena Spanish | — | 1335 |

## Instruction Following

- Claude Sonnet 5.5: —
- GLM-4.5V: 69.4 (#170)

| Benchmark | Claude Sonnet 5.5 | GLM-4.5V |
|---|---|---|
| LMArena Instruction Following | — | 1311 |

## Long Context

- Claude Sonnet 5.5: —
- GLM-4.5V: 39.6 (#166)

| Benchmark | Claude Sonnet 5.5 | GLM-4.5V |
|---|---|---|
| LMArena Longer Query | — | 1305 |

## Writing & Preference

- Claude Sonnet 5.5: —
- GLM-4.5V: 52.7 (#162)

| Benchmark | Claude Sonnet 5.5 | GLM-4.5V |
|---|---|---|
| LMArena Text | — | 1333 |
| LMArena Creative Writing | — | 1295 |
| LMArena Multi-Turn | — | 1333 |

## FAQ

### Is Claude Sonnet 5.5 better than GLM-4.5V?

Claude Sonnet 5.5 is the stronger model overall, scoring 60.5 to 39.2 on the Noometry Index. GLM-4.5V costs 4.4× less per token, which makes it the better buy when Claude Sonnet 5.5's lead doesn't matter for your workload.

### Which is cheaper, Claude Sonnet 5.5 or GLM-4.5V?

GLM-4.5V is cheaper. It lists at $0.60 per million input tokens and $1.80 per million output tokens; Claude Sonnet 5.5 lists at $2 and $10.

### Is Claude Sonnet 5.5 or GLM-4.5V better for coding?

Claude Sonnet 5.5 scores higher on coding benchmarks: 65.5 versus 38.9 in the Noometry coding category.

### Which has the bigger context window?

Claude Sonnet 5.5 does, with 1M tokens against 64K.

### How many benchmarks do Claude Sonnet 5.5 and GLM-4.5V share?

0 benchmarks have published results for both models. Claude Sonnet 5.5 has 16 scored results on Noometry and GLM-4.5V has 15.