Anthropic launches Claude Opus 5.5 as OpenAI ships GPT-6 Sol and Luna
Anthropic and OpenAI trade same-day model launches, with Opus 5.5 undercutting prices and GPT-6 Sol and Luna targeting cheaper tiers.
Sources:
Claude Opus 5.5 matches Fable 5.1 performance at lower cost and promises less "Claudish" writing
OpenAI's New GPT-6 Sol and Luna Models Bring Astra Improvements to Cheaper Tiers
Meta patches Muse exploit that let attackers control the AI agent
Amazon Blocks Meta’s Muse AI Agent From Amazon.com Shopping After Meta Rejects Removal Request: 16 outlets compared | NewsCord
Anthropic is setting up a biology lab where Claude guides robots through drug…
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