CoreWeave Forge AI development platform

CoreWeave launched Forge, a unified AI development platform, at its Fully Connected 2026 event. Forge integrates the former Weights & Biases, OpenPipe, and Marimo products into one connected environment spanning training, inference, notebooks, sandboxes, a registry, and agent observability. The platform is cloud-agnostic, existing Weights & Biases credentials carry over, and wandb.ai links continue to work. Three components are at general availability: ARIA, a coding agent that analyzes experiment and observability data and proposes next experiments with supporting evidence; Sandboxes, which provide isolated environments for agent tool use, reinforcement learning, and model evaluation; and Agent Lens, an observability tool that analyzes tens of millions of traces to surface insights for production agents. Agent Lens is available in preview. CoreWeave states Agent Lens detects 20% more critical failures and fixes issues at one-tenth the cost, based on a benchmark against a general-purpose frontier LLM. Forge also automates the speculative decoding optimization loop, connecting training, evaluation, and serving steps without manual handoffs; CoreWeave states it achieved top output speed on Artificial Analysis benchmarks for Kimi K2.6 using this approach.