Anthropic readies Opus 4.8 release amid leaks

Rumors of an imminent Claude Opus 4.8 launch highlight the intensifying rivalry between Anthropic and OpenAI, where even unannounced model preparations trigger market moves. Model slugs for "claude-opus-4.8" have appeared in Google Vertex AI and Amazon Bedrock staging environments, suggesting final internal evaluation is underway. This timing coincides with OpenAI's stealth routing updates for GPT models and Anthropic's release of production-grade Claude Code plugins, which provide the essential tool-use layer for the new model. Industry reports suggest version 4.8 will focus on native agentic capabilities, aiming for record-breaking scores on engineering benchmarks.