# Test Runners Now 2-10x Faster

**URL:** <https://forum.codecrafters.io/t/test-runners-now-2-10x-faster/15353>\
**Category:** Announcements\
**Created:** [September 30, 2025, 4:23am UTC](https://forum.codecrafters.io/t/test-runners-now-2-10x-faster/15353 "2025-09-30T04:23:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![andy1li](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.codecrafters.io/andy1li/32/10_2.png) [@andy1li](https://forum.codecrafters.io/u/andy1li)\
**Post date:** [September 30, 2025, 4:23am UTC](https://forum.codecrafters.io/t/test-runners-now-2-10x-faster/15353/1 "2025-09-30T04:23:47Z")

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Hey everyone!

We’ve made significant optimizations to our test runners, resulting in much faster execution times. Here’s a snapshot of the improvements:

| Scenario | Median Time | p90 Time |
| --- | --- | --- |
| Rust (Stage 2 Pass) | 20s → 2s | 22s → 5s |
| All Failed Tests (Across Languages) | 13s → 6s | 35s → 25s |

 ![image](https://canada1.discourse-cdn.com/flex003/uploads/codecrafters/original/3X/b/b/bb500fb07586be6e46e17605442dcf3ecaa3b326.png)

 ![image](https://canada1.discourse-cdn.com/flex003/uploads/codecrafters/original/3X/7/9/79fa3a06580a34f87f02e00a2b1378c91ac01b03.png)

Try it out and let us know if you notice any issues or if things feel faster on your end!

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**Author:** ![abhirammkaushik](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.codecrafters.io/abhirammkaushik/32/7632_2.png) [@abhirammkaushik](https://forum.codecrafters.io/u/abhirammkaushik)\
**Post date:** [October 6, 2025, 2:16am UTC](https://forum.codecrafters.io/t/test-runners-now-2-10x-faster/15353/3 "2025-10-06T02:16:37Z")

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I can confirm these are blazing fast, at least the turbo tests are! Thank you