Compare / Claude Fable 5 vs GLM 5.3 Flash

Claude Fable 5 vs GLM 5.3 Flash

22 results from 4 sources that measured both models. Each row is in the source's own units; there is no overall winner.

Claude Fable 5
Anthropic · profile
GLM 5.3 Flash
Z.ai · profile
Results compared
22
Shared sources
4
BenchmarkMetricClaude Fable 5GLM 5.3 Flash
APEX-AgentsreportedTasks passed% of tasks 63.6%52.8%
Arena (formerly LMArena)reportedConfirmed task successIPS effect estimate 0.030.07
Arena (formerly LMArena)reportedPraise over complaintIPS effect estimate 0.17-0.00
Arena (formerly LMArena)reportedSteerabilityIPS effect estimate 0.11-0.01
Arena (formerly LMArena)reportedTool groundingIPS effect estimate 0.000.00
Arena (formerly LMArena)reportedOverallArena rating 1,4831,467
Arena (formerly LMArena)reportedBusiness, management and financeArena rating 1,5031,463
Arena (formerly LMArena)reportedCreative writingArena rating 1,5011,433
Arena (formerly LMArena)reportedExpert promptsArena rating 1,5501,510
Arena (formerly LMArena)reportedInstruction followingArena rating 1,5091,474
Arena (formerly LMArena)reportedOverallArena rating 1,5041,474
Arena (formerly LMArena)reportedWriting, literature and languageArena rating 1,5081,450
Artificial AnalysisreportedArtificial Analysis Coding Indexindex score 76.571.5
Artificial AnalysisreportedArtificial Analysis Intelligence Indexindex score 49.641.8
Artificial AnalysisreportedGPQA Diamond% of questions 92.6%91.2%
Artificial AnalysisreportedHumanity's Last Exam% of questions 55.5%39.9%
Artificial AnalysisreportedLong-context reasoning (AA-LCR)% of questions 82.3%80.0%
Artificial AnalysisreportedSciCode% of problems 61.0%51.6%
Artificial AnalysisreportedTerminal-Bench 2.1% of tasks 84.6%84.3%
Artificial AnalysisreportedTerminal-Bench 4.0% of tasks 42.4%32.8%
Artificial AnalysisreportedΤ-bench banking% of tasks 38.1%47.2%
GDP.pdfreportedProfessional document tasks% of rubric 30.0%14.0%

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.