Primary official sources. Traceable record by record.Provider docs, changelogs and official announcements only

12primary source pages30verified eventsSep 1, 2026 – Sep 10, 2026 (UTC)

Public information directory · tailored email service

UTC 2026-09-16 build snapshot, not live metrics. Date states can update; source verification timestamps do not.

API platform & regional scope

Anthropic Claude API · Direct developer platform; eligibility and regional restrictions are account-specific.

Not AWS Bedrock or Vertex AI.

Bounded manual catalog. Original event checks retained from 2026-09-01; not reverified in this expansion.

Unconfirmed regions are not assumed to be global. Automatic monitoring is OFF. Source checks

Anthropic

Anthropic API change watch

Claude API model retirement schedules, request parameter changes and migration guidance.

Tracked events2Normalized records

Upcoming0With stated dates

Upcoming critical0Shutdown risk

Verification date rangeSep 1, 2026 (UTC)Public docs · not build date

Timeline

Anthropic events

Initial coverage is intentionally narrow and source-verified. It is not a complete archive.

Anthropic

HighVerified

Model lifecycle · Not announced

Verification is under 30 days old, not a live check; date passage does not confirm shutdown.

Anthropic's model status page marks claude-mythos-preview as deprecated and points developers to claude-mythos-5.

No deadline statedNot announced

Action noticeModel Deprecation

claude-mythos-preview

Anthropic

HighVerified

Request parameters · Not announced

Verification is under 30 days old, not a live check; date passage does not confirm shutdown.

Anthropic documents the following behavior on the affected models: Omit parameters; non-default values return HTTP 400.

No deadline statedNot announced

Action noticeBreaking Change

Claude Opus 4.7 and laterclaude-mythos-preview