Google Research released Harness2, an Apache-2.0 licensed framework that rewrites an agent’s harness at test time to improve performance. One refinement step using Harness2 lifted GLM-5 by 11.5 points on WorkBuddy-Bench with no weight updates, indicating a mechanism for post-hoc agent optimization without model retraining (MarkTechPost).
Voxel51 released version 3.0, unifying search, curation, annotation and evaluation of multimodal sensor data into a single platform. The update includes Voxel51 Agent with 45+ Model Context Protocol (MCP) tools, dataset versioning, and a free self-service tier, targeting physical AI teams working with sensor data (MarkTechPost). Separately, Perplexity open-sourced SPACE, a Firecracker microVM sandbox platform for AI agents under Apache 2.0, with each agent task running in isolated VMs and credentials controlled externally (MarkTechPost).