← Back to radar

Your seven-day catch-up

The release digest.

What changed recently, why it matters, and what we’re still checking.

1 Sept 20267 Sept 2026 · UTC

3 model launches2 active labs3 briefs needing review

New model launches

Announcements dated within this seven-day window.

Anthropic

Claude Fable 5.1

Updates the tracked Claude frontier tier with canonical release-note and model-doc evidence instead of relying on the older Fable 5 entry.

ImpactMajor
Source qualityProduct changelogStrong source · 3 receipts
Open radar brief

Across the current index

Still needs review

These briefs have unresolved evidence. Their status can change as sources become clearer.

xAI

Grok 4.6

Keeps xAI’s rapid frontier-model cadence visible while full model-card, benchmark and pricing details remain to be verified.

ImpactNeeds review
Source qualitySocial-only sourceSocial-first · 1 receipt
Open radar brief
Meta

Muse Spark 1.1

Marks Meta’s return to frontier APIs with native multi-agent orchestration and active context management.

ImpactNeeds review
Source qualityNeeds reviewEditorial review · 1 receipt
Open radar brief