Model comparison
Claude 2.1 vs GLM-4.5
GLM-4.5 is the stronger model overall, scoring 42.0 to 25.2 on the Noometry Index.
Last verified . 1 shared benchmarks.
Summary
- They share 1 benchmark with published results for both. Claude 2.1 scores higher in 0 categories and GLM-4.5 in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in math, where GLM-4.5 leads 39.0 to 10.2.
- The biggest single-benchmark swing is WeirdML: 7.1% for Claude 2.1 and 40.6% for GLM-4.5.
- GLM-4.5 has downloadable open weights; the other is API-only.
Side by side
| Claude 2.1 | GLM-4.5 | |
|---|---|---|
| Provider | Anthropic | Z.ai (Zhipu) |
| Noometry Index | 25.2 | 42.0 |
| Released | 2023-11-21 | 2025-07-27 |
| Weights | Proprietary | Open |
| Context window | — | 131K |
| Max output | — | 98K |
| Input $ / M tokens | — | $0.60 |
| Output $ / M tokens | — | $2.20 |
| Results tracked | 7 | 27 |
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Category by category
Coding GLM-4.5 leads
Claude 2.1: 26.2 (#327), GLM-4.5: 41.4 (#125)
| Benchmark | Claude 2.1 | GLM-4.5 |
|---|---|---|
| WeirdML | 7.1% | 40.6% |
| SWE-bench Verified (bash only) | — | 54.2% |
| LMArena Coding | — | 1434 |
| ALE-Bench | — | 344.82 |
| AlgoTune | — | 1.52 |
Reasoning GLM-4.5 leads
Claude 2.1: 21.4 (#221), GLM-4.5: 28.6 (#100)
| Benchmark | Claude 2.1 | GLM-4.5 |
|---|---|---|
| Kagi LLM Benchmark | — | 57.9% |
| LMArena Hard Prompts | — | 1429 |
| DTBench | 51% | — |
| Epoch Capabilities Index | 119.27 | — |
| ForecastBench | 54.2 | — |
Math GLM-4.5 leads
Claude 2.1: 10.2 (#315), GLM-4.5: 39.0 (#116)
| Benchmark | Claude 2.1 | GLM-4.5 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 1.9% | — |
| LMArena Math | — | 1427 |
Knowledge GLM-4.5 leads
Claude 2.1: 15.4 (#292), GLM-4.5: 35.9 (#179)
| Benchmark | Claude 2.1 | GLM-4.5 |
|---|---|---|
| GPQA Diamond | 33% | — |
| Humanity's Last Exam | — | 8.3% |
| Confabulations | — | 11.3% |
| LMArena Expert | — | 1433 |
| MMLU | 73.5% | — |
Multilingual Not comparable
Claude 2.1: —, GLM-4.5: 52.8 (#77)
| Benchmark | Claude 2.1 | GLM-4.5 |
|---|---|---|
| LMArena Non-English | — | 1417 |
| LMArena Chinese | — | 1465 |
| LMArena French | — | 1418 |
| LMArena German | — | 1407 |
| LMArena Japanese | — | 1415 |
| LMArena Korean | — | 1380 |
| LMArena Russian | — | 1414 |
| LMArena Spanish | — | 1454 |
Instruction Following Not comparable
Claude 2.1: —, GLM-4.5: 74.1 (#104)
| Benchmark | Claude 2.1 | GLM-4.5 |
|---|---|---|
| LMArena Instruction Following | — | 1404 |
Long Context Not comparable
Claude 2.1: —, GLM-4.5: 38.2 (#201)
| Benchmark | Claude 2.1 | GLM-4.5 |
|---|---|---|
| Fiction.LiveBench | — | 58.3% |
| LMArena Longer Query | — | 1412 |
Writing & Preference Not comparable
Claude 2.1: —, GLM-4.5: 57.5 (#127)
| Benchmark | Claude 2.1 | GLM-4.5 |
|---|---|---|
| LMArena Text | — | 1430 |
| LMArena Creative Writing | — | 1395 |
| Short-Story Creative Writing | — | 73.4% |
| EQ-Bench Creative Writing | — | 1343 |
| LMArena Multi-Turn | — | 1415 |
Frequently asked questions
Is Claude 2.1 better than GLM-4.5?
GLM-4.5 is the stronger model overall, scoring 42.0 to 25.2 on the Noometry Index.
Is Claude 2.1 or GLM-4.5 better for coding?
GLM-4.5 scores higher on coding benchmarks: 41.4 versus 26.2 in the Noometry coding category.
How many benchmarks do Claude 2.1 and GLM-4.5 share?
1 benchmark has published results for both models. Claude 2.1 has 7 scored results on Noometry and GLM-4.5 has 27.