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KARL

DatabricksProprietaryPending Human Review

KARL is Databricks AI Research’s published language-model specialization for grounded enterprise search and knowledge reasoning. The technical report explicitly defines KARL as GLM 4.5 Air post-trained with two iterations of multi-task reinforcement learning, rather than only the surrounding search-agent harness. Synthetic question generation, long-horizon solving, and large-batch off-policy learning train retrieval, cross-document synthesis, and numerical reasoning behaviors. Parallel rollouts and aggregation provide optional test-time scaling. The research model is documented in a public report, but downloadable weights and a named public inference endpoint are not established; platform product access does not prove an identical checkpoint.

2026-03-05
Mixture-of-Experts Transformer based on GLM 4.5 Air
Unspecified research model terms

Specifications

Architecture
Mixture-of-Experts Transformer based on GLM 4.5 Air
License
Unspecified research model terms
Type
text
Modalities
text

Benchmark Scores

Advanced Specifications

Model Family
KARL
Finetuned From
GLM 4.5 Air
API Access
Not Available
Chat Interface
Not Available
Variants
KARL Parallel 3KARL Parallel 10

Capabilities & Limitations

Capabilities
grounded reasoningagentic searchcross-document synthesistool usenumerical reasoning
Known Limitations
Research model weights and standalone public endpoint are not establishedResults depend on retrieval tools and test-time computeUnderlying base licensing does not establish a released KARL weight license
Notable Use Cases
enterprise knowledge researchdocument search evaluationretrieval-agent training
Tool Use Support
Yes