Putting Opus 5 to the Test on SlopCodeBench
benchmarks claude
| Source: HN | Original article
Opus 5 undergoes SlopCodeBench testing, yielding a 24% pass rate.
Benchmarking Opus 5 on SlopCodeBench has yielded interesting results, with the model achieving a 24% pass rate. This evaluation, which tests long-horizon coding performance, indicates that while Opus 5 leads in terms of pass rate, it struggles with maintaining codebase quality. The benchmark, developed by the UW Madison lab, assesses a model's ability to evolve a codebase incrementally across multiple checkpoints without prior knowledge of future requirements.
This matters because it highlights the challenges faced by advanced coding models like Opus 5 in real-world scenarios. Despite its technical lead, Opus 5's performance is not significantly higher than its predecessor, Opus 4.6, which achieved a 17% pass rate. The results also show that Opus 5 generates five times more code than necessary, raising questions about its efficiency.
As researchers continue to analyze the performance of Opus 5 and other models on SlopCodeBench, we can expect more insights into the strengths and weaknesses of these coding agents. Future evaluations will likely include additional models, such as Fable and Sol, providing a more comprehensive understanding of the current state of coding AI.
Sources
Back to AIPULSEN