Compare / GPT-5.1 vs GLM 4.5 Air
GPT-5.1 vs GLM 4.5 Air
17 results from 3 sources that measured both models. Each row is in the source's own units; there is no overall winner.
| Benchmark | Metric | GPT-5.1 | GLM 4.5 Air |
|---|---|---|---|
| Arena (formerly LMArena)reported | OverallArena rating | 1,459 | 1,395 |
| Arena (formerly LMArena)reported | Business, management and financeArena rating | 1,448 | 1,372 |
| Arena (formerly LMArena)reported | Creative writingArena rating | 1,428 | 1,327 |
| Arena (formerly LMArena)reported | Expert promptsArena rating | 1,482 | 1,390 |
| Arena (formerly LMArena)reported | Instruction followingArena rating | 1,450 | 1,361 |
| Arena (formerly LMArena)reported | OverallArena rating | 1,456 | 1,373 |
| Arena (formerly LMArena)reported | Writing, literature and languageArena rating | 1,437 | 1,341 |
| Artificial Analysisreported | Artificial Analysis Intelligence Indexindex score | 24.7 | 11.1 |
| Artificial Analysisreported | GPQA Diamond% of questions | 87.3% | 73.3% |
| Artificial Analysisreported | Humanity's Last Exam% of questions | 28.5% | 7.0% |
| Artificial Analysisreported | IFBench% of instructions | 72.9% | 37.6% |
| Artificial Analysisreported | Long-context reasoning (AA-LCR)% of questions | 80.0% | 46.7% |
| Artificial Analysisreported | Terminal-Bench Hard% of tasks | 45.5% | 20.5% |
| Artificial Analysisreported | Τ²-bench telecom% of tasks | 81.9% | 46.5% |
| UGI Leaderboardreported | Requested-length error% off the requested word count | 113.0% | 10.0% |
| UGI Leaderboardreported | Style adherencescore from 0 to 1 | 0.38 | 0.33 |
| UGI Leaderboardreported | Writing scorescore out of 100 | 55.8 | 47.0 |
Bold green marks the better value on that metric. Where a source reports ranges that overlap, the difference may not be meaningful; see the benchmark page for ranges.