compare
LM Evaluation Harness vs OpenCompass
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | LM Evaluation Harness | OpenCompass |
|---|---|---|
| Language | Python | Python |
| Licence | MIT | Apache-2.0 |
| Stars | 14k | 7.5k |
| Latest | v0.4.13 | 0.5.4 |
| Last push | 2026-09-14 | 2026-10-16 |
| Release cadence | about 74 days between releases | about 89 days between releases |
| Active contributors | 52 commit authors on the default branch in the last 90 days | 26 commit authors on the default branch in the last 90 days |
| Flags | none | none |
How they relate
OpenCompass replaces LM Evaluation Harness. Alternatives to LM Evaluation Harness →
Full replacementRuns benchmark suites over local and API models from a config.
LM Evaluation Harness
- v0.4.132026-08-31A fix-focused release. The main fixes are for few-shot leakage, a multiple-choice filter bug, and group stderr, alongsi…
- v0.4.122026-05-11New release with four new model backends, tensor parallel support for transformers based models (hf), new benchmarks, a…
- v0.4.112026-02-13Minor release. Stay tuned for bigger changes next release.
- v0.4.102026-01-27The big change this release: the base package no longer installs model backends by default. We've also added new benchm…
- v0.4.9.22025-11-26lm-eval v0.4.9.2 Release Notes
OpenCompass
- 0.5.42026-08-26✨ Multimodal Evaluation with VLMEvalKit: OpenCompass now integrates VLMEvalKit for native multimodal dataset loading, O…
- 0.5.32026-06-29✨ 🧪 Extensive New Benchmarks and Dataset Support: Added support for a wide range of new benchmarks and datasets, inclu…
- 0.5.22026-02-14✨ 🧪 Extensive New Benchmarks Support: We have introduced comprehensive support for Scientific and General Benchmarks,…
- 0.5.1.post12025-10-17✨ A New Method to quickly Integrate and Evaluate Your Datasets: Added a fast dataset integration and evaluation method…
- 0.5.02025-09-01✨ Comprehensive Scientific Benchmarks: Integrated 10+ specialized datasets (MedXpertQA, ClimaQA, SmolInstruct, etc.),…
LM Evaluation Harness
✓ signed The latest release, v0.4.13, carries a signature GitHub verified.
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OpenCompass
✓ signed The latest release, 0.5.4, carries a signature GitHub verified.
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