TECH NEWS

Claude Opus 5 Code Quality: What Sonar’s Benchmark Reveals

Claude Opus 5 is Anthropic's latest flagship, released on July 24. Anthropic describes it as delivering frontier intelligence at half the price of Claude Fable 5, and calls out one capability in particular: Opus 5 is unusually good at verifying its own work and catching logical flaws while it plans.

That's an interesting claim to test with algorithmic analysis, so we ran it through Sonar's LLM evaluation framework against the same Java benchmark we use for every model.

The short version: correctness improved a lot. Bug density, vulnerability density, and cognitive complexity per line fell, while code smell density, overall issue density, and cyclomatic complexity rose. There's also a volume story underneath it that changes what verification looks like in practice.

What was measured

Model: Claude Opus 5 Thinking (adaptive thinking mode)

Baseline: Claude Opus 4.8 Thinking

Benchmark: 4,441 tasks (158 HumanEval, 386 MBPP, and 3,897 ComplexCodeEval tasks)

Analyzer:SonarQube...

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Qustodio: 26% of Australian children aged 13 to 15 were on TikTok in July, just one percentage point below pre-ban levels, and 10-to-12-year-olds' usage is up

Sponsor Posts Subquadratic: the LLM built for 12M-token reasoning — SubQ can reason across entire codebases and document sets in one pass with no RAG workarounds. Read how SubQ 1.1 Small holds near-perfect retrieval out to 12M tokens. Most carriers track everything. Cape doesn't. — Unlimited talk, text &

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Q&A with Dr. Dre and Jimmy Iovine on lessons from Apple's Beats acquisition, creativity, being pro-AI music creation, AI as a tool like drum machines, and more

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Carry On (autonomous) Cabby (1/2) - saddling up with Pony AI’s Robotaxi

First, a confession - I have never ridden in a driverless car, and aging Luddite that I am, I have no burning desire to do so. But it’s impossible to deny that I’m driving on the wrong side of the road here and there is a significant direction

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iOS 27 Is Almost Here, but You Should Check Out All These iOS 26 Features First

Apple announced iOS 27 and more at its 2026 Worldwide Developers Conference in June. The upcoming iPhone operating system will introduce Siri AI and a handful of other features to compatible devices this fall. Based on historical trends, Apple could release iOS 27 to the general public in mid-September. Before

What was measured

Read more

Qustodio: 26% of Australian children aged 13 to 15 were on TikTok in July, just one percentage point below pre-ban levels, and 10-to-12-year-olds' usage is up

Q&A with Dr. Dre and Jimmy Iovine on lessons from Apple's Beats acquisition, creativity, being pro-AI music creation, AI as a tool like drum machines, and more

Carry On (autonomous) Cabby (1/2) - saddling up with Pony AI’s Robotaxi

iOS 27 Is Almost Here, but You Should Check Out All These iOS 26 Features First