What is Claude Mythos Preview?

Anthropic's top-tier AI model, now in private preview on Vertex AI for select Google Cloud users—focused on power and cybersecurity.

When will Claude Mythos be publicly available on Vertex AI?

No official date, but expect wide release by mid-2025, post-private beta feedback loops.

How does Claude Mythos differ from Claude Opus or Sonnet?

It's billed as more powerful overall, with extra emphasis on secure, enterprise-scale applications—benchmarks pending.

Explainers

Claude Mythos Preview Hits Vertex AI [Private Access Now]

What if Google's Vertex AI just quietly leapfrogged the competition with Anthropic's beast-mode Claude Mythos? Private preview access drops today—for a select few.

Dev Digest Apr 15, 2026 4 min read

Claude Mythos Preview announcement graphic on Vertex AI platform with Anthropic and Google Cloud logos

⚡ Key Takeaways

Claude Mythos Preview launches in private beta on Vertex AI exclusively for select Google Cloud customers via Project Glasswing. 𝕏
Key selling point: Reduced cybersecurity risk, targeting enterprise fears post-high-profile outages. 𝕏
Google's multi-model strategy strengthens Vertex AI against Azure and Bedrock, with bold potential for 2025 dominance. 𝕏