Claude Opus 4.1 — EchtRaaW Passport

// PASSPORT

Claude Opus 4.1

Anthropic · Multimodal model · Registered 2025-08-05

IDENTITY

Developer

Anthropic

Confirmed by

Confirmed first-party from Anthropic's model deprecations (platform.claude.com/docs/en/about-claude/model-deprecations) and release notes, 27 June 2026.

First registered

2025-08-05 (official_announcement)

Developer confirmed

2026-06-27

Gate

PROVENANCE COMPLETE

Status

Deprecated

PROVENANCE

Claimed developer

Anthropic

Confirmed developer

Anthropic

Delta

326 days · match confirmed

EU COMPLIANCE

AI Act

GPAI ⓘ

PASSPORT FIELDS

Model type

Multimodal

Parameters

Undisclosed

Context window

Unknown

Open source

Weights available

License

—

Superseded by

Claude Opus 4.5 Part of lineage

Supersedes

Claude Opus 4.0 Part of lineage

PROVENANCE TIMELINE

2026-06-05

Deprecated

Source: anthropic.com · https://platform.claude.com/docs/en/about-claude/model-deprecations