# Claude Opus 5

id: ent_claude-opus-5  
kind: product  
timeline: /timelines/claude-opus-5.md  
page: /record/claude-opus-5  
same_as: https://asof.is/record/claude-opus-5 (how to cite the id: /identifiers.md)  

Opus model close to Fable 5 at half the price

## 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 5 release date](/record/claude-opus-5/model_release.md)
- [Claude Opus 5 predecessor](/record/claude-opus-5/predecessor.md)
- [Claude Opus 5 context window](/record/claude-opus-5/context_window.md)
- [Claude Opus 5 price](/record/claude-opus-5/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 5](/record/claude-opus-5.md) | context_window | 1M tokens | valid 2026-07-24 to present | conf 0.95 | valid | [clm_1D95A84BC613](/claim/clm_1D95A84BC613.md)
  sources: https://platform.claude.com/docs/en/release-notes/overview
- [Claude Opus 5](/record/claude-opus-5.md) | predecessor | [Claude Opus 4.8](/record/claude-opus-4-8.md) | valid 2026-07-24 to present | conf 0.95 | valid | [clm_05B8D6F2DA38](/claim/clm_05B8D6F2DA38.md)
  sources: https://platform.claude.com/docs/en/release-notes/overview
- [Claude Opus 5](/record/claude-opus-5.md) | price | $5 per million input tokens | valid 2026-07-24 to present | conf 0.95 | valid | [clm_BB7CC2DEC953](/claim/clm_BB7CC2DEC953.md)
  sources: https://www.anthropic.com/news/claude-opus-5

## All claims

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 Superseded claims stay visible.

- [Claude Opus 5](/record/claude-opus-5.md) | predecessor | [Claude Opus 4.8](/record/claude-opus-4-8.md) | valid 2026-07-24 to present | conf 0.95 | valid | [clm_05B8D6F2DA38](/claim/clm_05B8D6F2DA38.md)
  sources: https://platform.claude.com/docs/en/release-notes/overview
- [Claude Opus 5](/record/claude-opus-5.md) | context_window | 1M tokens | valid 2026-07-24 to present | conf 0.95 | valid | [clm_1D95A84BC613](/claim/clm_1D95A84BC613.md)
  sources: https://platform.claude.com/docs/en/release-notes/overview
- [Claude Opus 5](/record/claude-opus-5.md) | price | $5 per million input tokens | valid 2026-07-24 to present | conf 0.95 | valid | [clm_BB7CC2DEC953](/claim/clm_BB7CC2DEC953.md)
  sources: https://www.anthropic.com/news/claude-opus-5

## 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 5](/record/claude-opus-5.md) | model_release | Claude Opus 5 | valid 2026-07-24 to present | conf 0.95 | valid | [clm_8A1FF48BDD89](/claim/clm_8A1FF48BDD89.md)
  sources: https://platform.claude.com/docs/en/release-notes/overview

---

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