Life-Harness lifts frozen agents with no change to model weights
With Qwen3-4B-Instruct, its mean accuracy was 28.7 points above Meta-Harness.
Researchers show Life-Harness, a runtime layer that turns agent errors into fixes. It does not change model weights. With Qwen3-4B-Instruct, it had a score of 28.7 points above Meta-Harness and 7.5 points above AHE.
With the Qwen3-4B-Instruct model frozen, Life-Harness beat two rival harnesses on mean accuracy across seven shared environments, using fewer optimization tokens.
