Compare / Autonomous coding agents
Jigward and Reason
Two ways to get engineering work done.
Reason is a coding agent from Reason Machines that its makers call an always-on teammate. A person hands it work from its apps, Slack or another agent, and it works on a computer of its own.
Jigward is an AI engineering coworker your whole team hires.
A coworker, not another tool.
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It works where your team works
Mention it in Slack, assign it a Jira issue, ask it to review a pull request. It answers in the same place.
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It belongs to the whole team
Engineers, tech leads, QA engineers and analysts give work to the same coworker, and it keeps what the team settled.
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It brings work back, and leaves the decision
A report with its evidence, a draft pull request or a Jira issue. Merging and deploying stay with people.
Two ways to work
Always-on coding agent
Reason
A person gives Reason work in its apps or Slack, a Loop starts it on a schedule or an event, or a Grok Bot hands it coding work through the Reason plugin. Each Session runs on a computer of its own, and code comes back as a pull request to approve.
AI engineering coworker
Jigward
The team hands Jigward work where it already talks: a Slack thread, a Jira issue, a pull request. It comes back in the same place with a report, the evidence and a draft pull request, and it keeps what the team decided for the next task.
Side by side
| Question | Reason | Jigward |
|---|---|---|
| What it is | A coding agent its makers call an always-on teammate | An AI engineering coworker your team hires |
| Works for | People in a shared Workspace, each with a Reason of their own | The whole team: engineers, tech leads, QA engineers, analysts |
| Where you reach it | Its web, Mac and iOS apps, Slack and the command line | Slack, Jira and GitHub pull requests, where the team already works |
| What you hand it | Coding work, recurring jobs, email, calendars and business data | Code changes and the work around them: logs, browser checks, tickets, scheduled checks |
| What it remembers | Preferences and corrections between runs, and skills | The team's decisions, and its understanding of each repository |
| What comes back | A pull request, and Sessions anyone it is shared with can continue | A report with evidence where you asked, and draft pull requests people merge |
| Best for | Coding work alongside a person's other agents | Handing off the work a whole team shares |
When to choose which
Choose Reason when
- You want one coding agent on the model subscriptions you already have.
- The team wants AI employees beyond engineering, for email, calendars and metrics.
- The work should run on your own computer as well as in the cloud.
Choose Jigward when
- The team hands work off in Jira and pull requests as well as Slack.
- The work is engineering, across code, logs, browser checks and tickets.
- You want what the team decided on one task carried into the next.
See Jigward on a familiar problem
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Every check is green on a column drop. Does anything still read it?
A cleanup pull request drops an old column and passes every check, but the checks cannot see the other repositories and the old instances that still read it.
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640 regression cases, two testers. What does this release change?
Running the whole regression sheet takes a week, so testers guess what to skip, and nobody records what went untested or who accepted it.
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Works on staging. Not for the customer.
A customer's import keeps failing, engineering cannot reproduce it on staging, and the ticket has bounced between support and engineering three times.
Questions
What is Reason?
Reason is a coding agent from Reason Machines, which calls it an always-on teammate that works with a person's other agents, such as Claude Code, Codex, Cursor and Grok Bot. Each Session runs on a computer of its own, and through the Reason plugin a Grok Bot can hand it coding work that comes back as a pull request to approve.
How is Jigward different from Reason?
Reason is built around an always-on coding agent that works alongside a person's other agents. Jigward is built as a coworker the whole team hires. It works in the team's Slack, Jira and pull requests, takes on the work around the code as well as the code, and keeps what the team decided for the next task.
Can we use both?
Yes. They do not connect to each other. A person can keep handing Reason coding work, from its apps or from a Grok Bot, while the team hands Jigward work in Slack, Jira and GitHub, and people review the pull requests from both.
More comparisons
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Open-source AI coding agent platform
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Meet your next engineering coworker
Bring a question
from your own project.
See how Jigward can help your team understand the system and move the next task forward.
Jigward is in closed testing. Accounts are created by hand; sending a request does not create one.