# Claude Opus 4.8: what changed between 2026-08-13 and 2026-11-11

entity: /record/claude-opus-4-8.md  
from: 2026-08-13  
to: 2026-11-11  
page: /record/claude-opus-4-8/diff?from=2026-08-13&to=2026-11-11  
json: /v1/entities/claude-opus-4-8/diff?from=2026-08-13&to=2026-11-11  

Between 2026-08-13 and 2026-11-11, Claude Opus 4.8's record did not change: 3 facts held on both days.

State as of 2026-08-13: /record/claude-opus-4-8.md?as_of=2026-08-13 · as of 2026-11-11: /record/claude-opus-4-8.md?as_of=2026-11-11. Format: subject | predicate | value | valid range | confidence | status | claim. Posts and Hugging Face repos are left out (1 held on 2026-08-13, 1 on 2026-11-11).

## Replaced (0)

The same fact with a different value: the claim that held on the earlier day, then the one that holds on the later day.

- none

## Added (0)

Held on 2026-11-11, not on 2026-08-13.

- none

## Ended (0)

Held on 2026-08-13, not on 2026-11-11, and not replaced by another value.

- none

## Unchanged

3 claims held on both days: context_window 1, predecessor 1, price 1.

## Get this data

- JSON: /v1/entities/claude-opus-4-8/diff?from=2026-08-13&to=2026-11-11
- MCP: entity_diff(entity: "claude-opus-4-8", from: "2026-08-13", to: "2026-11-11")
- Entity twin: /record/claude-opus-4-8.md · timeline: /timelines/claude-opus-4-8.md

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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.