Meta launched Muse Spark Open, an open-weight AI model designed to run on Macs, and paired it with Muse Code for coding and other agentic workflows. The model uses 816 billion parameters and a 1 million token context window. Running it locally requires at least 1 terabyte of RAM, and Meta is making the model available now through multiple API platforms for desktop-focused coding and tasks.
Anthropic built Scion, an in-house version control system, after Claude-driven coding throughput exposed scaling bottlenecks in git-based workflows. In September 2026, its daily code merges exceeded 30,000 (up from 2,500 in May), and Anthropic says Scion cuts CPU and memory infrastructure needs by 200x while enabling CI and research jobs to check out code 100x faster. Anthropic fully migrated its monorepo in five months but will not release Scion publicly, instead sharing ideas it hopes others can adapt into git.
Meta’s open-weights coding and agent-focused foundation model, listed for launch, is available to download or run locally. It has 816B total parameters with a 1M token context window. The update gives developers options to get the weights via Hugging Face or run it on two M5 Ultra Mac Studios using MLX.
Ben’s Bites compiled recent updates on AI models and agent tooling, including prompt and workflow tips drawn from Anthropic-related experiments and other product announcements. Docs links for coding agents were reported to improve task completion from 41% to 84%. The roundup and tips steer readers toward new ways to set up agent sessions and connect tools for better results.
OpenCode 2.0 overhauls how its coding agent runs tools and manages sessions, including making the local service auto-start and updating the API and client packages. The update adds 80+ internal plugins that keep the Plugin API maintained and brings MCP servers into Code Mode by default. As a result, users and scripts get simpler local orchestration, more capable agent-to-tool workflows, and breaking changes for 1.0 plugins and the server/API structure when upgrading.
Tetriz launched Harness, an open-source suite of AI coding-agent tools and workflow automation for teams using Claude Code, Codex, Cursor, and Kiro. It ships today. Harness Recommendations identifies gaps in agent rules, skills, hooks, and permissions and the Control Plane applies fixes across the team.
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