RedditGPT-5.4 Leaked Extreme Reasoning 1M Context WindowThe Information·high signalThe Information reports GPT-5.4 with 1M context and extreme reasoning mode. Spotted on LMArena and in Codex commits.SourceSource pageThe Information↳ Follow the threadStack layer / Threat patternOut of Sight Defends Web Content by Attacking Agent Context CompressionarXivStack layer / ContrastMeta Charges for a Frontier Model for the First Time: Muse Spark 1.1 at $1.25/$4.25TechCrunchPolicy dependency / Stack layerPattern: Safety Rails Are Migrating From the Prompt Into the Harness's Auto ModeClaude Code ChangelogPolicy dependency / Stack layerLeanCTX Ships a Rust Binary That Decides What Your Agent Is Allowed to ReadGitHubPolicy dependency / Stack layerponytail: A 'Laziest Senior Dev' Skill That Cuts Agent-Written Code by ~54% Is the Fastest-Rising Repo on GitHubGitHubPolicy dependency / Stack layerCommerce Department Lifts the Export Controls That Took Fable 5 and Mythos 5 OfflineLast Week in AI (Skynet Today)Stack layer / Follow-up threadOpenAI's GPT-Live-1 Makes Voice Full-Duplex and Delegates Hard Reasoning to GPT-5.5OpenAIPolicy dependency / Stack layerIAPS warns on Kimi Claw: security and governance risks of Chinese-hosted 'always-on' AI agentsIAPS