Claude Opus 5.5 now available on AI Gateway

Ordered by publication time. The first one is marked first; anything flagged near-identical shares almost the same wording, which usually means the same press release rather than separate reporting. That is a measurement — a SimHash distance of at most 10 on the headline and excerpt — not an accusation.

1. 22 Sep 2026, 00:00 UTCVendorVercel Changelogfirst

   Claude Opus 5.5 now available on AI Gateway

   vercel.com

2. 22 Sep 2026, 16:27 UTCCommunityHacker News — front page+16h

   Claude Opus 5.5

   https://github.com/anthropics/ClaudeForFoundationModels/comm... Comments URL: https://news.ycombinator.com/item?id=49803863 Points: 111 # Comments: 65

   anthropic.com

3. 22 Sep 2026, 16:30 UTCPressThe Verge — AI+17h

   Anthropic launches Claude Opus 5.5 with stricter safeguards for cybersecurity

   Anthropic says its new Claude Opus 5.5 model comes with stronger safeguards in the wake of recent rogue AI hacking incidents. In an announcement on Tuesday, Anthropic says Opus 5.5 comes with improvements to certain risky behaviors, including attempts to escape the company's testing sandbox. It's…

   theverge.com

4. 22 Sep 2026, 16:30 UTCPressZDNET — AI+17h

   Claude Opus 5.5 delivers Fable 5.1 performance – and costs 40% less

   Anthropic’s newest Claude model aims to make frontier AI cheaper, faster, and safer, while giving subscribers more breathing room before those frustrating usage limits kick in.

   zdnet.com

5. 22 Sep 2026, 17:10 UTCVendorGitHub Changelog+17h

   Claude Opus 5.5 is now available in GitHub Copilot

   Claude Opus 5.5, Anthropic’s newest Opus model, is now available in GitHub Copilot. You can use it for agentic coding, long-running agentic tasks, and knowledge work. In early testing, Opus… The post Claude Opus 5.5 is now available in GitHub Copilot appeared first on The GitHub Blog .

   github.blog