# Claude Opus 4.8

id: ent_claude-opus-4-8  
kind: product  
timeline: /timelines/claude-opus-4-8.md  
page: /record/claude-opus-4-8  
same_as: https://asof.is/record/claude-opus-4-8 (how to cite the id: /identifiers.md)  

Opus update building on Opus 4.7

## Fact pages

One page per fact: the current value with its sources, then every dated value and what replaced what. Fetch any of them as markdown.

- [Claude Opus 4.8 release date](/record/claude-opus-4-8/model_release.md)
- [Claude Opus 4.8 predecessor](/record/claude-opus-4-8/predecessor.md)
- [Claude Opus 4.8 price](/record/claude-opus-4-8/price.md)

## Current state

What the record asserts: claims that held, valid by their sources or primary-sourced at confidence 0.7 or more. Unverified, disputed, retracted and review-marked claims are listed below, labelled, not here.

- [Claude Opus 4.8](/record/claude-opus-4-8.md) | predecessor | Opus 4.7 | valid 2026-05-28 to present | conf 0.95 | valid | [clm_E91575B30B2E](/claim/clm_E91575B30B2E.md)
  sources: https://support.claude.com/en/articles/12138966-release-notes
- [Claude Opus 4.8](/record/claude-opus-4-8.md) | price | $5 per million input tokens | valid 2026-05-28 to present | conf 0.95 | valid | [clm_CDD220064EB1](/claim/clm_CDD220064EB1.md)
  sources: https://www.anthropic.com/news/claude-opus-4-8

## All claims

One claim per line, newest first. Superseded claims stay visible.

- [Claude Opus 4.8](/record/claude-opus-4-8.md) | price | $5 per million input tokens | valid 2026-05-28 to present | conf 0.95 | valid | [clm_CDD220064EB1](/claim/clm_CDD220064EB1.md)
  sources: https://www.anthropic.com/news/claude-opus-4-8
- [Claude Opus 4.8](/record/claude-opus-4-8.md) | predecessor | Opus 4.7 | valid 2026-05-28 to present | conf 0.95 | valid | [clm_E91575B30B2E](/claim/clm_E91575B30B2E.md)
  sources: https://support.claude.com/en/articles/12138966-release-notes

## Posts and Hugging Face repos (1)

Dated items from the entity's own feeds, and the days its Hugging Face repositories were created, newest first.

- [Claude Opus 4.8](/record/claude-opus-4-8.md) | model_release | Claude Opus 4.8 | valid 2026-05-28 to present | conf 0.95 | valid | [clm_8BE1B4110AE7](/claim/clm_8BE1B4110AE7.md)
  sources: https://platform.claude.com/docs/en/release-notes/overview

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AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.