Tuesday 1 September 2026
AI news for 1 Sep 2026
20 items from 5 labs. 9 posts, 4 releases, 2 changelog entries, 1 model note and 4 incidents. Anthropic was busiest with 8.
20items5labs9posts4releases2changelogs4incidents
Models shipped on this day
- Claude Fable 5.1 Anthropic
- Claude Mythos 5.1 Anthropic
Anthropic 8
claude-code 2.1.258
Fixed Claude Code failing to launch on macOS 12 (Monterey), a regression introduced in 2.1.255 Fixed remote and scheduled sessions failing with "user messages must have non-empty content" after a re-sent permission approval could not be applied
claude-code v2.1.258
What's changed Fixed Claude Code failing to launch on macOS 12 (Monterey), a regression introduced in 2.1.255 Fixed remote and scheduled sessions failing with "user messages must have non-empty content" after a re-sent permission approval could not be applied
Degraded performance on platform.claude.com and Claude for Microsoft Office 365
Sep 1 , 18:07 UTC Resolved - This issue has been resolved. Sep 1 , 17:52 UTC Monitoring - We are seeing success rates recover across affected services. Core inference and the API are not impacted. Sep 1 , 17:05 UTC Investigating - We are investigating reports of degraded performance affecting some Claude services, including docs.claude.com. We are working to resolve these issues and will provide an update as soon as possible.
claude-code v2.1.257
What's changed Added Claude Fable 5.1 ( claude-fable-5-1 ), now the default Fable model — 1M context, $10/$50 per Mtok with $0.25/Mtok cache reads Added "Time format" ( timeFormat ) and timeZone settings: 12-hour, 24-hour, 24-hour UTC, or a strftime pattern for the turn-end clock and transcript-view timestamps Added a Containment Escape rule to auto mode so cloud metadata-credential fetches, egress evasion, and cross-tenant reach are no longer auto-approved unless your environment marks them expected Added CLAUDE_CODE_SUBAGENT_MODEL_FORCE to apply CLAUDE_CODE_SUBAGENT_MODEL (or the main…
claude-code 2.1.257
Added Claude Fable 5.1 (claude-fable-5-1), now the default Fable model — 1M context, $10/$50 per Mtok with $0.25/Mtok cache reads Added "Time format" (timeFormat) and timeZone settings: 12-hour, 24-hour, 24-hour UTC, or a strftime pattern for the turn-end clock and transcript-view timestamps Added a Containment Escape rule to auto mode so cloud metadata-credential fetches, egress evasion, and cross-tenant reach are no longer auto-approved unless your environment marks them expected Added CLAUDE_CODE_SUBAGENT_MODEL_FORCE to apply CLAUDE_CODE_SUBAGENT_MODEL (or the main model) to every…
anthropic-sdk-python v1.3.0
1.3.0 (2026-09-01) Full Changelog: v1.2.0...v1.3.0 Features api: beta user profiles: add external_user_onboarded_at, remove relationship in favor of access_type ( 74080c3 ) api: manual updates ( 1dc3ce0 ) api: organization compliance settings, user-profile order_by, memory-store and toolset schema updates ( 429e719 ) Bug Fixes aws: resolve base_url from aws_region under skip_auth and with_options ( #564 ) ( b6d1732 ) batches: add results to GA raw/streaming response wrappers ( cbf9715 ) ci: don't hard-wrap detect-breaking-changes output ( b5be779 ) client: derive multipart filename for file…
Degraded performance on Claude for Microsoft Office 365
Sep 1 , 16:22 UTC Resolved - This issue has been resolved. Sep 1 , 16:02 UTC Investigating - We are investigating elevated errors affecting Claude for Microsoft Office 365. We will provide an update as soon as possible.
OpenAI 7
codex 0.153.0-alpha.4
Release 0.153.0-alpha.4
Elevated latency in the Responses API
Status: Resolved All impacted services have now fully recovered. Affected components Responses (Operational)
How AI-native companies turn workflows into operating capability
Basis, Clay, and Exa Labs use AI agents to improve onboarding, account management, and developer integrations. See what enterprise leaders can apply.
Path to Astra: critical capabilities and frontier safeguards
Astra is the first OpenAI model to meet the Critical cybersecurity capability threshold under the Preparedness Framework, with stronger safeguards for release.
Healthcare organizations can now connect EHR and additional industry data to ChatGPT
ChatGPT can now connect to trusted healthcare data, helping clinicians securely access patient context, medical research, and more.
Elevated errors in ChatGPT conversations for Free and Go plans
Status: Resolved All impacted services have now fully recovered. Affected components Conversations (Operational)
How law firm Gilbert + Tobin governs and scales AI with OpenAI
See how Gilbert + Tobin combines CEO-led commitment, rigorous governance, and human accountability to scale ChatGPT Enterprise and Codex across the firm.
Google 3
The latest AI news we announced in August 2026
Transitioning cards: 1. Text "Gemini 3.7 Flash" next to the Gemini logo icon; 2. a photo of a pixel phone; 3. Google Gemini logo above the text "Claim your student plan for 1 year at no cost"
Introducing agentic video understanding with Gemini
Try Google Pics: Easy image creation and editing in Google Workspace
Collage of images created by Google Pics, with the text "Say hello to Google Pics" on top
DeepSeek 1
New model repo: deepseek-ai/DeepSeek-V4-Flash-Vision-Exp
image text to text · 133,024 downloads · 608 likes · tags: deepseek_v4, text-generation, image-text-to-text, eval-results, endpoints_compatible, 8-bit, fp8
xAI 1
Biosecurity at the frontier
Every line links to the lab that published it. We collect from their blogs, changelogs, status pages and model docs every fifteen minutes, and we don't reword what they wrote. The live feed has the filters and the RSS.