# Claude 3.5 Sonnet vs GLM-5.3

> GLM-5.3 is the stronger model overall, scoring 54.6 to 34.4 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-3-5-sonnet-vs-glm-5-3
- Last updated: 2026-10-10
- Shared benchmarks: 23

## Summary

- They share 23 benchmarks with published results for both. Claude 3.5 Sonnet scores higher in 0 categories and GLM-5.3 in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where GLM-5.3 leads 62.1 to 18.0.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 8.5% for Claude 3.5 Sonnet and 91.1% for GLM-5.3.
- GLM-5.3 has downloadable open weights; the other is API-only.

## Snapshot

| | Claude 3.5 Sonnet | GLM-5.3 |
|---|---|---|
| Provider | Anthropic | Z.ai (Zhipu) |
| Noometry Index | 34.4 | 54.6 |
| Rank | 225 | 25 |
| Context | — | 1M |
| Input $/M | — | $1.40 |
| Output $/M | — | $4.40 |
| Weights | Proprietary | Open |

## Coding

- Claude 3.5 Sonnet: 39.5 (#145)
- GLM-5.3: 59.0 (#12)

| Benchmark | Claude 3.5 Sonnet | GLM-5.3 |
|---|---|---|
| WeirdML | 40% | 75.4% |
| LMArena Coding | 1343 | 1499 |
| DeepSWE | — | 69% |
| FrontierCode | — | 40.1% |
| Aider Polyglot | 51.6% | — |
| LMArena WebDev | — | 1623 |
| FrontierSWE | — | 30.2% |
| SciCode | — | 59% |
| GSO | 4.6% | — |
| BigCodeBench Instruct | 46.8% | — |
| LiveBench Coding | 67.1% | — |
| BigCodeBench Complete | 58.6% | — |
| CadEval | 48% | — |
| ALE-Bench | — | 1,317 |
| HumanEval+ | 81.7% | — |
| MBPP+ | 74.3% | — |

## Agentic & Tool Use

- Claude 3.5 Sonnet: 32.1 (#61)
- GLM-5.3: 36.3 (#34)

| Benchmark | Claude 3.5 Sonnet | GLM-5.3 |
|---|---|---|
| APEX-Agents | — | 56.6% |
| TheAgentCompany | 24% | — |
| Cybench | 17.5% | — |
| BALROG | 32.6% | — |
| METR Time Horizons | 45.2% | — |
| Vending-Bench 2 | — | 8,164 |

## Reasoning

- Claude 3.5 Sonnet: 22.5 (#176)
- GLM-5.3: 45.2 (#42)

| Benchmark | Claude 3.5 Sonnet | GLM-5.3 |
|---|---|---|
| LMArena Hard Prompts | 1305 | 1491 |
| DTBench | 67.8% | 87.7% |
| Epoch Capabilities Index | 133.55 | 155.56 |
| SimpleBench | 41.4% | — |
| NYT Connections (extended) | — | 74.2% |
| CritPt | — | 19.1% |
| Chess Puzzles | — | 21% |
| EnigmaEval | 0.9% | — |
| LiveBench Reasoning | 56.7% | — |
| Mystery Game Puzzles | — | 33% |
| LiveBench Data Analysis | 55% | — |
| LMCA | — | 55.5% |
| Bench to the Future 3 | — | 0.15 |
| ForecastBench | 60.7 | — |
| LiveBench | 59% | — |

## Math

- Claude 3.5 Sonnet: 18.0 (#282)
- GLM-5.3: 62.1 (#27)

| Benchmark | Claude 3.5 Sonnet | GLM-5.3 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 8.5% | 91.1% |
| LMArena Math | 1306 | 1493 |
| FrontierMath (Tiers 1-3) | — | 68.8% |
| FrontierMath Tier 4 | — | 29.3% |
| ProofBench | — | 49% |
| Omni-MATH | 27.6% | — |
| LiveBench Math | 52.3% | — |
| MATH Level 5 | 56.9% | — |
| FrontierMath (Feb 2025 set) | 2.1% | — |
| FrontierMath Tier 4 (v1) | 0% | — |

## Knowledge

- Claude 3.5 Sonnet: 28.5 (#236)
- GLM-5.3: 58.3 (#34)

| Benchmark | Claude 3.5 Sonnet | GLM-5.3 |
|---|---|---|
| GPQA Diamond | 55.3% | 90.9% |
| LMArena Expert | 1264 | 1512 |
| Humanity's Last Exam | 4.1% | — |
| SimpleQA Verified | — | 41% |
| MMLU-Pro | 77.7% | — |
| Confabulations | 19.9% | — |
| GPQA (HELM) | 56.5% | — |
| MMLU | 87.3% | — |

## Multimodal

- Claude 3.5 Sonnet: 26.0 (#115)
- GLM-5.3: —

| Benchmark | Claude 3.5 Sonnet | GLM-5.3 |
|---|---|---|
| LMArena Vision | 1125 | — |
| Video-MME | 60% | — |
| GeoBench | 62% | — |
| VPCT | 33% | — |

## Multilingual

- Claude 3.5 Sonnet: 43.4 (#180)
- GLM-5.3: 55.9 (#27)

| Benchmark | Claude 3.5 Sonnet | GLM-5.3 |
|---|---|---|
| LMArena Non-English | 1283 | 1457 |
| LMArena Chinese | 1271 | 1523 |
| LMArena French | 1304 | 1499 |
| LMArena German | 1297 | 1505 |
| LMArena Japanese | 1234 | 1438 |
| LMArena Korean | 1200 | 1478 |
| LMArena Russian | 1305 | 1460 |
| LMArena Spanish | 1289 | 1444 |

## Instruction Following

- Claude 3.5 Sonnet: 69.0 (#177)
- GLM-5.3: 77.8 (#15)

| Benchmark | Claude 3.5 Sonnet | GLM-5.3 |
|---|---|---|
| LMArena Instruction Following | 1297 | 1481 |
| LiveBench Instruction Following | 69.3% | — |
| IFEval | 85.5% | — |

## Long Context

- Claude 3.5 Sonnet: 39.9 (#162)
- GLM-5.3: 45.5 (#32)

| Benchmark | Claude 3.5 Sonnet | GLM-5.3 |
|---|---|---|
| LMArena Longer Query | 1311 | 1485 |

## Writing & Preference

- Claude 3.5 Sonnet: 53.0 (#159)
- GLM-5.3: 75.9 (#6)

| Benchmark | Claude 3.5 Sonnet | GLM-5.3 |
|---|---|---|
| LMArena Text | 1298 | 1473 |
| LMArena Creative Writing | 1292 | 1459 |
| EQ-Bench Creative Writing | 1451 | 2075 |
| LMArena Multi-Turn | 1326 | 1473 |
| Short-Story Creative Writing | 80.3% | — |
| WildBench | 79.2% | — |
| LiveBench Language | 53.8% | — |

## FAQ

### Is Claude 3.5 Sonnet better than GLM-5.3?

GLM-5.3 is the stronger model overall, scoring 54.6 to 34.4 on the Noometry Index.

### Is Claude 3.5 Sonnet or GLM-5.3 better for coding?

GLM-5.3 scores higher on coding benchmarks: 59.0 versus 39.5 in the Noometry coding category.

### How many benchmarks do Claude 3.5 Sonnet and GLM-5.3 share?

23 benchmarks have published results for both models. Claude 3.5 Sonnet has 60 scored results on Noometry and GLM-5.3 has 41.