Users will find Opus 4.8 to be a modest but tangible improvement on its predecessor. There’s still more to be done: we’re working on developing and releasing models that provide many of the same capabilities as Opus at a lower cost. Not only that, but we plan to release a new class of model with even higher intelligence than Opus. As part of Project Glasswing, a small number of organizations are currently using Claude Mythos Preview for cybersecurity work. Models of this capability level require stronger cyber safeguards before they can be generally released. We’re making swift progress on dev
Introducing Claude Opus 4.8
Claude Opus 4.8: Lying Machine No More?
New Claude Opus 4.8: 15 Things You May’ve Missed
Embrace long-running tasks with Opus 4.8 and Claude Code
Introducing Claude Opus 4.6
Claude Opus 4.7 - A New Frontier, in Performance … and Drama
Anthropic just dropped Opus 4.8... (WOAH)
The Two Best AI Models/Enemies Just Got Released Simultaneously
Claude just got another superpower...
Did Claude really get dumber again?
You Are Being Told Contradictory Things About AI
…These requests will instead be rerouted to an older AI model, Claude Opus 4.8. If Anthropic suspects a user is trying to conduct distillation—training a smaller AI model off a…
…A recent update brought Claude Opus 4.8 to the table with significant improvements and features. Even among some setbacks like the recent internal leak that ended in the distribution of Claude…
…According to the company, the Mythos model shows major improvements in code reasoning and autonomy, far above Claude's current flagship model, Opus 4.8. It is also worth noting that the…
…The new Claude Design joins an existing suite of Mac tools, including Claude Cowork and Claude Code. Expand Expanding Close Anthropic reveals new Opus 4.7 model with focus on advanced software…
Claude Opus 4.8: 4 Features That Change Our Daily Work with Claude
Claude Opus 4.8
Claude Opus 4.8 coming today?
Elevated errors for Claude Opus 4.8
Claude Opus 4.8 system prompt leaked
…However, Anthropic highlighted that several other models, including Claude Opus 4.8, GPT-5.5, and Kimi K2.7, could identify the same vulnerabilities. To address the issue, Anthropic has trained a…
…One analysis suggests that Claude Opus users start saving money from their subscription after just two to three messages per day, and that their subscription could be worth many multiples of its…
…Data from Margin Lab, however, suggests that Claude Opus 4.6 has at least maintained its score on the SWE-Bench-Pro test. Assessments conducted since February show some variation but no…
…Wie gefährlich sind KI-Modelle wie Claude Mythos? Trusted Access for Cyber: GPT 5.4 Cyber ist OpenAIs Reaktion auf Claude Mythos Claude Mythos und Opus 4.7: Was leisten Anthropics neue…
…Expand Expanding Close Claude Opus 4.7 launches with coding improvements, but it’s no Mythos Ben Schoon Apr 16 2026 - 8:40 am PT Anthropic has today announced its latest Claude…
…Following Anthropic’s announcement, effective today, access to Claude Fable 5 has been suspended across all GitHub Copilot experiences. All other Claude models including Claude Opus 4.8, Sonnet 4.6, and…
