# Antithesis 22 Hacker News commenters recommended Antithesis and 3 criticized it, November 2025 to November 2026. It was recommended in 8 of 13 months. It meets the Hacker Approved badge rule. **Verdict:** Recommended for finding and reproducing hard concurrency bugs via deterministic testing; critics find its capabilities unclear and the pitch promotional. ## Why people recommend it - Finds hard bugs with generic workloads (4 comments): "IMO this is a very cool thing that Antithesis is able to find and reproduce this bug in this specific subsystem with a relatively generic workload." ([source](https://news.ycombinator.com/item?id=49283649)) "This generic workload found the bug without any special knowledge of the bug, due to how Antithesis works." ([source](https://news.ycombinator.com/item?id=49278364)) "our fuzzer is stupid good at finding race conditions" ([source](https://news.ycombinator.com/item?id=49279570)) - Deterministic reproducibility for concurrent code (3 comments): "if you need determinism for perfect bug reproducibility, you should run it all in Antithesis" ([source](https://news.ycombinator.com/item?id=47501608)) "perfect reproducibility even for concurrent or distributed code" ([source](https://news.ycombinator.com/item?id=47511032)) "the world needs deterministic, tested software" ([source](https://news.ycombinator.com/item?id=49281368)) - Leading approach for deep testing (3 comments): "There are companies like Antithesis that have done incredible work in this space." ([source](https://news.ycombinator.com/item?id=46538829)) "DST systems such as Antithesis can definitely help." ([source](https://news.ycombinator.com/item?id=48842330)) "probably the leaders of the pack in going deeper" ([source](https://news.ycombinator.com/item?id=47042802)) - Teams adopt it for testing (2 comments): "We have also adopted Antithesis for a more thorough DST environment, and plan to do more with it." ([source](https://news.ycombinator.com/item?id=46199810)) "We've become huge fans of the service" ([source](https://news.ycombinator.com/item?id=46137745)) ## What people warn about - Promotional content over substance (2 comments): "the overwhelming majority of the actual content here" ([source](https://news.ycombinator.com/item?id=49278949)) "imo this is an ad + AI handwaving and nothing else" ([source](https://news.ycombinator.com/item?id=49286579)) - Unclear what capabilities actually are (2 comments): "I'm equal parts intrigued and skeptical- I guess if the prompt doesn't lead on there is a bug there then I'm impressed." ([source](https://news.ycombinator.com/item?id=49277297)) "i don't feel like i gained a strong appreciation for what the actual Antithesis capabilities are" ([source](https://news.ycombinator.com/item?id=49282288)) ## Alternatives hackers recommend - [Jepsen](https://hackerapproved.com/p/jepsen.md): 12 recommend ## Where to get it - [Visit the official site](https://antithesis.com/) ## Cite as Hacker Approved, "Antithesis", https://hackerapproved.com/p/antithesis/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).