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Claude Fable 5.1 and Claude Mythos 5.1 launched

Tue, September 1, 2026

2 mo ago

Source

Anthropic launched Claude Fable 5.1 and Claude Mythos 5.1, described as its most advanced models for coding and knowledge work.

Every year

Jun 30Claude Sonnet 5 launchedanthropicAn event.4 mo agoanthropicDetails →Jul 1Model entitlements for Enterprise plans (beta)anthropicAn event.4 mo agoanthropicDetails →Jul 9Monthly recap in Settings > Reflect (beta), plus break reminders and quiet hoursanthropicAn event.4 mo agoanthropicDetails →Jul 24Claude Opus 5 launchedanthropicAn event.4 mo agoanthropicDetails →Aug 6Skill and plugin security scanning (beta) for Enterprise plansanthropicAn event.3 mo agoanthropicDetails →
Sep 1Claude Fable 5.1 and Claude Mythos 5.1 launchedanthropicAn event.2 mo agoanthropic
Sep 10Smart reports (beta) on Claude Enterprise analyze team usage and costsanthropicAn event.2 mo agoanthropicDetails →Sep 15Salesforce in Claude plugin (beta) with 37 pre-built sales skillsanthropicAn event.2 mo agoanthropicDetails →UnverifiedSep 15Launching Salesforce in Claude (beta)anthropicAn event.2 mo agoanthropicDetails →UnverifiedSep 16Create designs, decks, and docs in any conversationanthropicAn event.2 mo agoanthropicDetails →Sep 22Claude Opus 5.5 launched, first model in the Claude 5.5 familyanthropicAn event.2 mo agoanthropicDetails →UnverifiedOct 21Claude Duet research preview for Pro and Max plansanthropicAn event.19 days agoanthropicDetails →

Also on Sep 1, 2026

Outdoors· Huntingto Oct 18Bear season opens (MN)Permit areas & no-quota areaThe season runs through Oct 18, 2026 (Permit areas & no-quota area).2 mo agoMinnesota DNRDetails →Tech· Compliance deadlinesChina Small PI Handler Simplified Measures: Simplified measures for small handlers take effectChinaSmall handlers may use simplified notice, audit and assessment methods.2 mo agoRegulationsDetails →
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  • 2026-09-25: added to 2026-09-01