Is CMMLU still meaningful?
Status:Saturated Checked against the report, 5 November 2026
Verdict
No. A 2026 base model scores 90.0, so CMMLU no longer separates frontier models.
Why saturated: The chapter rates CMMLU Saturated. ERNIE-5.5-Flash-Base scores 90.0.[1][1] ERNIE-5.5-Flash-Base model card Primary
What “Saturated” meansKnown problems
- Most of 18 models scored below 50% at launch.[2][2] CMMLU, arXiv 2306.09212 Primary A 2026 base model now scores 90.0.[1][1] ERNIE-5.5-Flash-Base model card Primary
- Chinese-language benchmarks appear only in base-model tables of the 2026 cards the report checked.[3][3] DeepSeek-V4.1-Flash model card Primary[1][1] ERNIE-5.5-Flash-Base model card Primary
What to look at instead
SuperCLUE uses private questions refreshed each round.[4][4] DataLearner, SuperCLUE page Secondary
Where it appears in the report
Chapter 6, China and Asia
- China has its own leaderboards, but frontier claims run on Western tests
- Table 2. First-generation Chinese benchmarks in “Go deeper: First-generation Chinese benchmarks (2023–2026)”
- Figure 3. Chinese Cards Report Western Agent Benchmarks, Their Own Tests and No Safety Results
Sources
Copied from the chapter source lists. Each number links back to the source in its chapter.
- [1] ERNIE-5.5-Flash-Base model card. It reports Baidu's base-model scores, including CMMLU. Primary huggingface.co Chapter 6, source 20
- [2] CMMLU, arXiv 2306.09212. It introduces the Chinese multitask knowledge benchmark. Primary arxiv.org Chapter 6, source 15
- [3] DeepSeek-V4.1-Flash model card. It gives base and chat benchmark tables and a harness-sensitivity table. Primary huggingface.co Chapter 6, source 4
- [4] DataLearner, SuperCLUE page. It describes the SuperCLUE method and lists later scores. Secondary datalearner.com Chapter 6, source 16