Claude Opus 5.5 vs GPT-6 Astra: new AI models explained

TechRepublic compares and explains Anthropic's Claude Opus 5.5 and GPT-6 Astra, two new AI models.

• AI Cybersecurity Newsletter Roundup: Rogue Agents and Stolen Accounts2026-10-04
• GPT-6 Bot Caught Cheating in StarCraft AI Tournament2026-10-03
• Developer builds 500 clocks in one 6.3 MB HTML file with Opus 5.52026-10-18
• StarSkirmish benchmark updated; GPT-6 Astra tops LLM StarCraft coding2026-10-16
• Developer Uses GPT-6 Astra to Jailbreak Kindle for Photo App2026-10-13