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Thalia vs Devin: Which is Better in 2026?

Choosing between Thalia and Devin comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.

Bottom line: Devin wins this matchup. GitLab is our overall AI Coding pick. GitLab is our free AI Coding pick. Pick Thalia if you need a fully free option.

··Methodology
Editor reviewed0 verified reviews comparedPricing checked Oct 2026

Short on time? Here's the quick answer

We've tested both tools. Here's who should pick what:

Thalia

Agentic AI coding on macOS, with plan review and voice control

Best for you if:

  • • You want a fully free tool (Devin requires payment)
  • • You want privacy-respecting: no analytics, keys in Keychain, microphone recordings never saved
  • • You want designed specifically for Muse Code CLI with a polished, SwiftUI-native experience

Devin

AI software engineer by Cognition Labs

Best for you if:

  • • You want aI software engineer
  • • You want end-to-end tasks
At a Glance
ThaliaThalia
DevinDevin
Starts at
FreeFree tier available
$20/monthCore
Best For
AI CodingAI Coding
Rating
--
Free plan
Yes No
Watch out for
n/aOverage fees of $2.25/ACU on Core plan

Choose Thalia or Devin?

Thalia

Choose Thalia if

Agentic AI coding on macOS, with plan review and voice control

  • You want a fully free tool (Devin requires payment)
  • You want privacy-respecting: no analytics, keys in Keychain, microphone recordings never saved
  • You want designed specifically for Muse Code CLI with a polished, SwiftUI-native experience
Devin

Choose Devin if

AI software engineer by Cognition Labs

  • You want aI software engineer
  • You want end-to-end tasks
FeatureThaliaDevin
Pricing ModelFreePaid
User RatingNo ratings yetNo ratings yet
Categories
AI CodingAI Agents
AI CodingAI Agents

In-Depth Analysis

ThaliaThalia

Agentic AI coding on macOS, with plan review and voice control

Starts at Free

Strengths

  • +Privacy-respecting: no analytics, keys in Keychain, microphone recordings never saved.
  • +Designed specifically for Muse Code CLI with a polished, SwiftUI-native experience.
  • +Structured workflow from planning to PR means you review and approve at every stage, reducing unintended changes.

Weaknesses

  • -Requires Apple Silicon and macOS, limiting platform compatibility.
  • -Dependent on Muse Code CLI access; not a standalone coding assistant.
  • -GitHub integration requires the GitHub CLI (gh) and a GitHub remote repo.

Key features

Project-based chat with per-task conversations, named and pinned chats, and persistent history.Composer toggles between Plan mode (Muse plans edits without touching files) and Build mode.Live steerable execution: approve each command before it runs, send new instructions mid-turn, or stop the turn.Snapshot-based review: approve only if current files exactly match the reviewed diff; run integrated checks.Checkpoints and rewind preview: capture Git checkpoints, preview exactly what a restore changes, and undo the rewind.Voice mode: press ⌃⇧Space to talk, hear replies read aloud, with Apple Speech or Meta's Muse Voice transcription.

DevinDevin

AI software engineer by Cognition Labs

Starts at $20/month
Fair value

Devin's pricing is fair for individual developers with the $20/month Core plan, offering a pay-as-you-go model.

Watch out

Overage fees of $2.25/ACU on Core plan

Strengths

  • +AI software engineer
  • +End-to-end tasks
  • +Good for automation
  • +Innovative approach
  • +Active development

Weaknesses

  • -Waitlist/limited access
  • -Expensive
  • -Accuracy varies
  • -Not replacement for devs
  • -Early stage

Key features

AI software engineerAutonomous codingPlanningDebuggingFull-stackCognition Labs

Pricing: Thalia vs Devin

PlanThaliaDevin
Tier 1N/A
$20 month
Core
Tier 2N/A
$500 month
Team
Tier 3N/A
custom
Enterprise

Pricing verified from each vendor's public pricing page. Compare in detail on Thalia pricing and Devin pricing.

Who Should Use What?

On a budget?

Thalia is free. Devin is paid.

Go with: Thalia

Want the highest-rated option?

Neither has ratings yet.

Too early to call on ratings, compare on features and pricing.

Value user reviews?

Neither has ratings yet.

Too early to call, neither has ratings yet.

3 Questions to Help You Decide

1

What's your budget?

Thalia is free. Devin is paid. Go with Thalia if free matters most.

2

What's your use case?

Both are ai coding tools. Compare their specific features to decide.

3

How important are ratings?

Neither has ratings yet.

Key Takeaways

Devin

  • Our pick for this comparison

Thalia

  • Completely free

The Bottom Line

Devin wins this matchup. GitLab is our overall AI Coding pick. GitLab is our free AI Coding pick. That said, Thalia is free, hard to beat on price.

Frequently Asked Questions

Is Thalia or Devin better?

Devin is rated in our evaluation. Thalia is free and Devin is paid.

What are Thalia and Devin used for?

Thalia: Agentic AI coding on macOS, with plan review and voice control. Devin: AI software engineer by Cognition Labs.

What does Thalia cost vs Devin?

Thalia is completely free. Devin is a paid tool. Visit their websites for detailed pricing.

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