---
type: "Evidence Item"
title: "Introducing Claude Opus 4.8"
description: "We’re upgrading Claude Opus to a new version: Claude Opus 4.8. It builds on Opus 4.7 with improvements across benchmarks, and is a more effective collaborator. It’s available."
resource: "https://www.anthropic.com/news/claude-opus-4-8"
tags: ["appendix-iii", "benchmark", "anthropic"]
timestamp: "2026-05-28"
category: "benchmark"
publisher: "Anthropic"
cope_score: 96
confidence: 0.88
---

# Introducing Claude Opus 4.8

# Claim

We’re upgrading Claude Opus to a new version: Claude Opus 4.8. It builds on Opus 4.7 with improvements across benchmarks, and is a more effective collaborator. It’s available today for the same price. Opus 4.8 launches alongside several new features. Users on claude.ai now have control over the amount of effort Claude puts into a task. Claude Code has a.

# Relevance

Appendix III, section one: model and benchmark capability evidence

# Oracle Verdict

Anthropic is describing a frontier or production capability that pushes directly on the thesis. The important signal is not the marketing language; it is the widening set of tasks now being routed through model-driven execution rather than ordinary software or headcount.

# Metadata

* Publisher: Anthropic
* Category: benchmark
* Sector: General AI capability
* Capability: Frontier model release and benchmark movement
* Cope score: 96
* Confidence: 0.88

# Related Concepts

* [Live evidence index](index.md)
* [Thesis](../thesis.md)

# Citations

[1] [Introducing Claude Opus 4.8](https://www.anthropic.com/news/claude-opus-4-8)