Author

Sarthak Harne

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Preprint Jul 2026

Echoverse: Deep, Evolving Environments for Training Computer-Use Agents at Scale

This work presents Echoverse, which compiles specifications into stateful applications whose tasks are graded against the application's own database, and a co-evolution loop that reads every graded rollout twice: as repairs to the environment, its tasks and its verifier, and as training signal for the model.

Yash Pandya, Sahil Gupta, Sarthak Harne et al. · 0 citations

Preprint Aug 2026

Privileged, but Biased: How PI-Conditioned Teachers Break Self-Distillation

This work reproduces SDPO's reported gains in its easy setting, then applies the identical setup to difficult tasks and finds that it does not teach anything, and explains this failure through a single causal chain from the loss to the model it produces.

Sarthak Harne, Chinmay Karkar, Yash Pandya et al. · 1 citation