Compare / GPT-5 Nano vs GLM 5

GPT-5 Nano vs GLM 5

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

GPT-5 Nano
OpenAI · profile
GLM 5
Z.ai · profile
Results compared
15
Shared sources
3
BenchmarkMetricGPT-5 NanoGLM 5
Arena (formerly LMArena)reportedBusiness, management and financeArena rating 1,3391,451
Arena (formerly LMArena)reportedCreative writingArena rating 1,2471,447
Arena (formerly LMArena)reportedExpert promptsArena rating 1,3541,481
Arena (formerly LMArena)reportedInstruction followingArena rating 1,3271,446
Arena (formerly LMArena)reportedOverallArena rating 1,3381,457
Arena (formerly LMArena)reportedWriting, literature and languageArena rating 1,2891,447
Artificial AnalysisreportedArtificial Analysis Intelligence Indexindex score 13.027.9
Artificial AnalysisreportedGPQA Diamond% of questions 67.6%82.0%
Artificial AnalysisreportedHumanity's Last Exam% of questions 9.5%29.3%
Artificial AnalysisreportedIFBench% of instructions 67.6%72.3%
Artificial AnalysisreportedLong-context reasoning (AA-LCR)% of questions 45.0%75.7%
Artificial AnalysisreportedTerminal-Bench Hard% of tasks 17.4%43.2%
Artificial AnalysisreportedΤ²-bench telecom% of tasks 36.5%98.2%
Vectara Hallucination LeaderboardreportedAnswer rate% of documents 100.0%99.7%
Vectara Hallucination LeaderboardreportedHallucination rate% of summaries 10.5%10.1%

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.