A specific example
Breakspec’s answer is something like “split_bill(1, 2) returns [0, 0]”. You can paste it into a test or hand it to your agent.
Compare · Checked 12 October 2026
Breakspec vs Greptile
Greptile reviews pull requests with your whole codebase in mind, so it can spot when a change breaks something elsewhere. Like any AI reviewer, it gives you a judgement. Breakspec runs your code and shows you an example that breaks it.
What Greptile does
- $30 per developer per month, which includes 50 review credits each. Extra credits cost $1.
- A basic review uses 1 credit, a deeper one 3, and the deepest 10.
- Free for one developer with 50 credits a month. Running it on your own servers is on the Enterprise plan.
How Breakspec is different
Cost doesn’t grow with your pull requests
Greptile charges per review. Breakspec only uses AI once per function, to suggest rules and write the checks. Rechecking after that is free.
Your code stays put
Checks run on your machine or in your CI. Your code only goes to an AI model when you say so, using your own key.
| Greptile | Breakspec | |
|---|---|---|
| How it finds bugs | An AI reads the change | Runs your code on hundreds of examples |
| What you get back | A comment about what might be wrong | An example that breaks your code, which you can run yourself |
| Who decides what “correct” means | The AI, guided by your instructions | You, by approving rules |
| Cost of checking every pull request | Credits per review, $1 each after the first 50 | No AI cost. Rechecking doesn’t use AI |
| After a fix | Reviews the new code again | Reruns the example that failed, and notices if the fix cheats |
What Greptile does better
- It sees how a change affects the rest of your codebase. Breakspec checks one function at a time.
- There’s nothing to set up beyond installing it. Breakspec needs you to approve rules first.
Can I use both?
Yes. Greptile tells you where a change might cause trouble. Breakspec tells you whether the logic you care about still works.
Sources
Checked on 12 October 2026, from Greptile’s own docs and pricing pages. Prices and features change; if something here is out of date, tell us at sales@breakspec.com and we’ll fix it.
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