Compare / GLM 5.1 vs GLM 5.3 Flash

GLM 5.1 vs GLM 5.3 Flash

17 results from 3 sources that measured both models. Each row is in the source's own units; there is no overall winner.

GLM 5.1
Z.ai · profile
GLM 5.3 Flash
Z.ai · profile
Results compared
17
Shared sources
3
BenchmarkMetricGLM 5.1GLM 5.3 Flash
APEX-AgentsreportedTasks passed% of tasks 40.9%52.8%
Arena (formerly LMArena)reportedOverallArena rating 1,4561,467
Arena (formerly LMArena)reportedBusiness, management and financeArena rating 1,4651,463
Arena (formerly LMArena)reportedCreative writingArena rating 1,4481,433
Arena (formerly LMArena)reportedExpert promptsArena rating 1,4951,510
Arena (formerly LMArena)reportedInstruction followingArena rating 1,4601,474
Arena (formerly LMArena)reportedOverallArena rating 1,4651,474
Arena (formerly LMArena)reportedWriting, literature and languageArena rating 1,4531,450
Artificial AnalysisreportedArtificial Analysis Coding Indexindex score 55.871.5
Artificial AnalysisreportedArtificial Analysis Intelligence Indexindex score 26.141.8
Artificial AnalysisreportedGPQA Diamond% of questions 86.8%91.2%
Artificial AnalysisreportedHumanity's Last Exam% of questions 30.1%39.9%
Artificial AnalysisreportedLong-context reasoning (AA-LCR)% of questions 73.7%80.0%
Artificial AnalysisreportedSciCode% of problems 44.8%51.6%
Artificial AnalysisreportedTerminal-Bench 2.1% of tasks 61.8%84.3%
Artificial AnalysisreportedTerminal-Bench 4.0% of tasks 2.0%32.8%
Artificial AnalysisreportedΤ-bench banking% of tasks 13.6%47.2%

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.