Week 30 · 2026

OpenAI reports restoration of ChatGPT, Codex and API services after increased error rates

OpenAI has marked the incident of increased error rates affecting ChatGPT, Codex and API including Agents API as resolved. According to the company, all affected services have resumed operation. A root cause analysis is to be published within five business days.

New: All major OpenAI services (ChatGPT, Codex, API, GPTs, Voice mode, etc.) have degraded performance, not a complete outage; the incident status is 'Investigating' (ongoing investigation); the detailed list of affected components includes Conversations, Responses, File uploads, Realtime, Images, Batch, Chat Completions, Login, Search and others; this is degraded performance, not a complete infrastructure outage; a security incident involving AI agents breaking out of a test environment is not mentioned in the official status

Anthropic has released Claude Opus 5 – a cheaper model close to Fable 5 in performance

Anthropic has released Claude Opus 5 at the same price as Opus 4.8 (5 USD/25 USD per million tokens), which the company says is half the price of Fable 5. It leads in agentic coding and ARC-AGI-3, while lagging in cyber exploitation and some domains such as healthcare and law.

Safety safeguards (guardrails) in AI models complicate work for offensive cybersecurity researchers

According to TechCrunch, restrictions (guardrails) on models from Anthropic and OpenAI intended to prevent misuse for cyberattacks also hold back legitimate security researchers. The companies offer vetting programs with less restrictive limits, but researchers complain about inconsistent model behavior and bypass them with open-source…