Discussion on "Claude Opus 4.8: Anthropic's New Flagship Tops Benchmarks Across Coding, Reasoning, and Alignment"

Oleh Kem · 2026-05-28T17:27:04.967Z

Anthropic released Claude Opus 4.8 today, replacing Opus 4.7 as the company's strongest model. The pricing stays the same as Opus 4.7, fast mode runs at 2.5x speed, and fast mode costs are now 3x chea

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.

Interesting, thanx, i use models in security, looks like a costy model Mr Oleh Kem

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

What kind of security workflows are you running through the models?

Thanks !!, Detection Engineering and Alert Triage

Today I'm using Opus 4.8, and it's working amazingly.

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. Would love to hear your thoughts on how it stacks up for your use case!

I am using it since yesterday and its truly great model many more to come up next.

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

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?

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Claude Opus 4.8: Anthropic's New Flagship Tops Benchmarks Across Coding, Reasoning, and Alignment

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