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Head to head · 2026

Cognition AI vs Refraction

Pricing, free plans, ratings, features, pros and cons, side by side. Where one comes out ahead, we mark it.

Cognition AI

Cognition AI built Devin, an autonomous coding agent that plans, writes, tests, and ships code inside…

4.1$20/mo

Visit Cognition AI (opens Cognition AI in a new tab)

Refraction

Generates unit tests, refactors and documentation from code you paste in

3.9Free

Visit Refraction (opens Refraction in a new tab)

Who comes out ahead

Based only on the facts in our directory. The right pick still depends on the job you need done.

  • Lower starting price

    Not comparable

    Not comparable: Refraction does not list a price

  • Free plan

    Tie

    Both have one

  • Higher rating

    Cognition AI

    4.1 against 3.9

  • Same job?

    Yes

    Both are Coding tools

Side by side

Compared onCognition AIRefraction
Our rating4.1Better3.9
Starts at$20/moFree
Free planYesYes
CategoryCodingCoding
PlansFrom $20/moFree
Key features
  • Autonomous planning, coding, testing, and PR creation from a single ticket
  • Sandboxed VM execution isolated from a team's live environment
  • Integration with existing code repositories and developer tools
  • Agent Compute Unit-based usage pricing
  • Deployment inside large enterprise codebases referenced publicly by the company
  • Unit test generation from pasted code
  • Refactoring suggestions and code explanations
  • Documentation generation for existing functions
  • Browser-based with no editor extension required
Pros
  • Handles full ticket-to-PR workflows, beyond inline code suggestions
  • Backed by a funding round and valuation that signal long-term investment in the product
  • Deployed at large, complex organizations beyond early-adopter startups
  • Targets the work that actually gets skipped under deadline
  • No setup, so it is usable on any codebase immediately
Cons
  • ACU-based pricing makes real monthly cost hard to predict in advance
  • Independent reporting has questioned whether early demos overstated real-world reliability
  • Best suited to well-scoped tickets rather than ambiguous, judgment-heavy work
  • Generated tests can assert the wrong behaviour if accepted unread
  • Browser paste workflow is clumsier than an in-editor assistant
CompanyCognition AI, founded 2023

Prices come from each vendor's pricing page, last checked 20260811. Check the vendor before you buy.

FAQ

Questions people ask

Is Cognition AI better than Refraction?

In our reviews Cognition AI scores 4.1 and Refraction scores 3.9. The better pick depends on the job. Cognition AI: Cognition AI built Devin, an autonomous coding agent that plans, writes, tests, and ships code inside a sandboxed development environment. Refraction: Generates unit tests, refactors and documentation from code you paste in.

Which is cheaper, Cognition AI or Refraction?

Cognition AI: from $20/mo. Refraction: free.

Do Cognition AI and Refraction have free plans?

Yes, both have a free plan.

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