Jules January 26, 2026 Changelog
What changed in Jules agent January 26, 2026, released 2026-01-26 — explained in plain English.
TLDR
- Jules now has a "Planning Critic" that double-checks its own work before writing any code.
- This only happens for tasks that don't require a human to approve them first.
- It takes a tiny bit longer to start, but it fails at tasks way less often.
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Jules is getting better at working on its own without a human babysitter. This update matters to anyone who relies on Jules to handle tasks automatically, because it adds a built-in "second opinion" to catch bad ideas before they turn into messy code.
What's new
- The Planning Critic: Think of this as a second AI brain. Whenever Jules comes up with a plan to solve a task on its own, this new "Critic" agent steps in to review it. It looks for flaws and improves the plan before Jules is allowed to start actually working.
Improvements
- Higher success rate: Because the Critic catches bad plans early, tasks now fail about 9.5% less often.
- Better execution: The actual steps Jules takes to finish a job are now higher quality and more reliable.
- Smarter planning: The system is now better at thinking through the best way to tackle a problem before jumping in.
Fixes
- No more rushing into bad ideas: Previously, Jules would sometimes jump straight into writing code with a flawed plan, leading to failed tasks. The new Critic stops this from happening by catching the bad plan before any work begins.
Breaking changes
No breaking changes in this release.
This is our plain-language summary. Read the complete, official notes on the Jules official changelog ↗.
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