--- title: "Discussion on \"Claude Opus 4.8: Anthropic's New Flagship Tops Benchmarks Across Coding, Reasoning, and Alignment\" | Hashnode" description: "Discussion on \"Claude Opus 4.8: Anthropic's New Flagship Tops Benchmarks Across Coding, Reasoning, and Alignment\". Opus 4.8 scores 69.2% on SWE-Bench Pro, leads on reasoning and computer use. Misaligned behavior drops to Mythos Preview levels. Same price as 4.7." url: "https://hashnode.com/posts/claude-opus-4-8-benchmarks-what-changed/6a187ae878258754831d2544" --- [Feed](https://hashnode.com/feed) / Discussion # [Claude Opus 4.8: Anthropic's New Flagship Tops Benchmarks Across Coding, Reasoning, and Alignment](https://comparedge.hashnode.dev/claude-opus-4-8-benchmarks-what-changed?utm_source=hashnode&utm_medium=feed) Opus 4.8 scores 69.2% on SWE-Bench Pro, leads on reasoning and computer use. Misaligned behavior drops to Mythos Preview levels. Same price as 4.7. May 28 · 4 min read · comparedge.hashnode.dev Updated Jul 6 Read the article - [#claude](https://hashnode.com/tag/claude) - [#anthropic](https://hashnode.com/tag/anthropic) - [#llm](https://hashnode.com/tag/llm) - [#ai](https://hashnode.com/tag/ai) - [#machine-learning](https://hashnode.com/tag/machine-learning) ## Written by [Oleh Kem](https://hashnode.com/@comparedge) @comparedge · New York [View profile](https://hashnode.com/@comparedge) Founder of ComparEdge · I write about software pricing, AI tools, and security risk I build ComparEdge and write about the software decisions teams usually regret too late: unclear SaaS pricing, AI tool ROI, cloud security gaps, LLM API costs, and vendor tradeoffs. My work is for engineers, CTOs, founders, and operators who want practical research before the sales call, not after the invoice. ## Responses 13 Markdown supported · ⌘↵ to post [Alessandro Pieraccini](https://hashnode.com/@alessandroale83) [May 31](https://hashnode.com/posts/claude-opus-4-8-benchmarks-what-changed/6a187ae878258754831d2544/comment/6a1ca8f279d95f229b5aa69d) The feeling is that the most relevant point is no longer raw benchmarks or a few percentage points of difference between models, but the progressive increase in operational reliability within complex agentic workflows. Aspects such as self-correction, tool orchestration, coherent handling of multi-step contexts, and the ability to challenge unsound plans are probably becoming more important than pure generative capability itself. The more autonomous these systems become, the more the bottleneck shifts away from writing code and toward supervision, input quality, and real understanding of the application domain. [Yassine Cherair](https://hashnode.com/@yassinecherair) [May 30](https://hashnode.com/posts/claude-opus-4-8-benchmarks-what-changed/6a187ae878258754831d2544/comment/6a1b1b4f3e923106b700674f) Interesting, thanx, i use models in security, looks like a costy model Mr Oleh Kem [Oleh Kem](https://hashnode.com/@comparedge) [May 30](https://hashnode.com/posts/claude-opus-4-8-benchmarks-what-changed/6a187ae878258754831d2544/comment/6a1b1b4f3e923106b700674f#reply-6a1b20473e923106b702b3ba) Thanks for the comment! Security is one of the strongest use cases for Opus 4.8, when a wrong answer means a real incident, the cost-per-correct-decision math changes completely. That said, worth testing Claude Sonnet 4.5 first, it handles most security analysis tasks at ~20x lower cost. We track pricing and benchmarks across all Claude models at [https://comparedge.com/llm-calculator](https://comparedge.com/llm-calculator) What kind of security workflows are you running through the models? [Yassine Cherair](https://hashnode.com/@yassinecherair) [May 30](https://hashnode.com/posts/claude-opus-4-8-benchmarks-what-changed/6a187ae878258754831d2544/comment/6a1b1b4f3e923106b700674f#reply-6a1b23ad3e923106b7046bae) Thanks !!, Detection Engineering and Alert Triage [walkwithjesus](https://hashnode.com/@unitmorph) [May 30](https://hashnode.com/posts/claude-opus-4-8-benchmarks-what-changed/6a187ae878258754831d2544/comment/6a1a56d78b27917ec5a58ac6) Today I'm using Opus 4.8, and it's working amazingly. [Oleh Kem](https://hashnode.com/@comparedge) [May 30](https://hashnode.com/posts/claude-opus-4-8-benchmarks-what-changed/6a187ae878258754831d2544/comment/6a1a56d78b27917ec5a58ac6#reply-6a1a5e068b27917ec5a8d8c4) Same :) By the way, I've just added the Claude Opus 4.8 model to the cost calculator. If you're comparing API costs or trying to optimize your spend, feel free to give it a spin: [https://comparedge.com/llm-calculator](https://comparedge.com/llm-calculator). Would love to hear your thoughts on how it stacks up for your use case! [Gaurav Thorat](https://hashnode.com/@gauravthorat) [May 29](https://hashnode.com/posts/claude-opus-4-8-benchmarks-what-changed/6a187ae878258754831d2544/comment/6a19b684db7e495eeaed08c6) I am using it since yesterday and its truly great model many more to come up next. [Oleh Kem](https://hashnode.com/@comparedge) [May 30](https://hashnode.com/posts/claude-opus-4-8-benchmarks-what-changed/6a187ae878258754831d2544/comment/6a19b684db7e495eeaed08c6#reply-6a1a5d2a8b27917ec5a85e8d) fr fr bro [Grzegorz Małopolski](https://hashnode.com/@archtocode) [May 29](https://hashnode.com/posts/claude-opus-4-8-benchmarks-what-changed/6a187ae878258754831d2544/comment/6a196a4f52c4918e2654e49a) Opus 4.8 works well, i use it from morning. Is more agentic, but think a little longer. It have more thinking options when i click Effort. now when i want tu understand my codebase faster by archtocode diagram tool Opus 4.8 create diagrams more advanced [Oleh Kem](https://hashnode.com/@comparedge) [May 29](https://hashnode.com/posts/claude-opus-4-8-benchmarks-what-changed/6a187ae878258754831d2544/comment/6a196a4f52c4918e2654e49a#reply-6a1978841335680297ea96e8) Have you noticed Opus 4.7 or 4.6 'getting lazy' with complex tasks? Do you think the new default xhigh mode in Opus 4.8 finally fixes this? [CZ god](https://hashnode.com/@czcry) [May 28](https://hashnode.com/posts/claude-opus-4-8-benchmarks-what-changed/6a187ae878258754831d2544/comment/6a1884487825875483228710) Is that official?! [Oleh Kem](https://hashnode.com/@comparedge) [May 28](https://hashnode.com/posts/claude-opus-4-8-benchmarks-what-changed/6a187ae878258754831d2544/comment/6a1884487825875483228710#reply-6a188a8a782587548325f475) yeah, [https://www.anthropic.com/news/claude-opus-4-8](https://www.anthropic.com/news/claude-opus-4-8) [CZ god](https://hashnode.com/@czcry) [May 28](https://hashnode.com/posts/claude-opus-4-8-benchmarks-what-changed/6a187ae878258754831d2544/comment/6a1884487825875483228710#reply-6a18991b78258754832dd366) Thx!!