Successful Agent Traces Predict Which Base Models Merit Post-Training

Three verifier-based probes ranked ten base checkpoints similarly to their post-trained descendants on SWE-bench Verified.

Big Tech
Tan Yu · Alexander Bukharin · Khushi Bhardwaj · Jennifer Williams · Zirui Liu · Jonathan Lingjie Li · +16 more

NVIDIA · University of Minnesota – Twin Cities · University of California, Berkeley

Research Digest··3 min read
The authors propose evaluating base models at the decisive point in successful coding-agent trajectories, avoiding the tool-use failures that make end-to-end agent benchmarks nearly unusable before post-training.

The researchers replayed successful coding-agent trajectories, running the benchmark tests after every code-changing action.

Why this paper

From NVIDIA and 2 others

In one line

Base model potential for agentic coding can be predicted by probing at the decisive step in successful post-trained trajectories.

What we could check

  • ·No code link found
  • ·No weights link found
  • ·No dataset link found
  • ·No compute details found
  • ✓Limitations stated by the authors
  • ✓Reports numbers on named benchmarks (4 benchmarks)

Observed from the paper text and links we have. Absence here means we did not find it, not that it does not exist.

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Research Digest

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