Updated March 10, 2026
Jules is Google's AI coding agent powered by Gemini. It integrates with GitHub workflows to autonomously handle coding tasks—fixing bugs, writing tests, implementing features, and submitting pull requests. Jules runs in a cloud VM with its own development environment, understanding project context and dependencies to produce code that fits naturally into existing codebases.
Cody is Sourcegraph's AI coding assistant that understands your entire codebase. It uses Sourcegraph's code graph to provide context-aware code completions, explanations, and refactoring across massive codebases. Cody supports multiple LLM backends and works in VS Code, JetBrains, and the web.
What each tool does well, and the limitations to keep in mind.
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Respan lets you trace LLM and agent calls across any model or framework, A/B test prompts on production traffic, and route requests across 500+ models through one gateway.