xAI has announced that its latest flagship model, Grok 4.6, is now available via Microsoft Foundry. The model is designed for long-running agents and ambitious interactive and visual work, featuring a 500k context window and configurable reasoning efforts.
Microsoft Research has published and open-sourced RetroChimera, a new framework for retrosynthesis prediction that combines two complementary models to propose high-quality synthesis routes. The system integrates R-SMILES 2, a Transformer-based de-novo model, with NeuralLoc, a graph neural network (GNN) based model, using a learned ensembling strategy to rank predictions.
Microsoft Research has released GigaPath-Flash and GigaTIME-Flash, efficient variants of its pathology foundation models designed to enable population-scale discovery by drastically reducing computational requirements.
ExecCritic introduces a framework that separates test construction from source-code repair to prevent false confidence in coding agents. The system employs a Test agent and a Repair agent, both backed by Qwen-3.5-35B-A3B, trained separately using reinforcement learning.
Researchers introduce ExecCritic, a framework that combines a test-verify-revise scaffold with role-specific reinforcement learning to enhance coding agents. The system separates test construction from source-code repair, using a Test agent to generate repository-native tests and a Repair agent to revise code based on execution feedback.