Bun has matured significantly since its launch, now backed by Anthropic's December 2025 acquisition. The tool offers zero-config frontend dev, built-in Bun.SQL for databases, and integrated security scanning. With Anthropic's investment—Bun powers the $1B ARR Claude Code—its long-term stability looks promising for developers seeking faster tooling.

For production use, Bun excels in APIs and microservices where cold starts matter, plus CLI tools and SSR apps with React/Vue. However, proceed cautiously with apps heavy on native Node modules or those requiring exact Node.js API parity. The team remains intact under MIT licensing, maintaining the project's open-source roots.

To adopt Bun, pin versions carefully since patches add features, test dependencies thoroughly, and verify Node.js API coverage. Start with internal tooling or new projects before migrating critical systems. With Anthropic's backing reducing abandonment risk, Bun presents a credible alternative for modern JavaScript workloads in 2026.