Output.ai

Output.ai is an open-source TypeScript framework designed specifically for AI development workflows. It provides a structured approach to building AI features by organizing everything in your code repository - prompts, traces, configurations, and evaluations. The framework uses a file-system-first approach that keeps all your AI components version-controlled and accessible to coding agents like Claude Code. This means your AI assistant can see the full context of your project without needing to navigate multiple dashboards or external tools.

The framework includes built-in support for cost tracking, automatic tracing of LLM calls, and production-grade infrastructure with Temporal.io handling durable execution and retries. It features a unique prompts-as-code approach where every prompt lives as a .prompt file in your repo, eliminating vendor lock-in and making prompts reviewable in pull requests. The evaluation system uses LLM-as-judge methodology to test non-deterministic code changes before deployment, providing confidence scores and quality gates.

Output.ai is ideal for development teams building AI-powered features who want to maintain control over their prompts and workflows while getting production-ready infrastructure out of the box. It's particularly valuable for companies implementing AI assistants, automated workflows, or any application where consistent prompt management and cost visibility are important. The framework has been tested with companies like Superhuman, Webflow, and Airbyte, providing real-world validation of its approach to AI development challenges.