Anthropic Launches Claude Fable 5.1 and Mythos 5.1
Anthropic announces new AI models Fable 5.1 and Mythos 5.1 with improved performance and lower costs for agentic tasks.
1 article Updated October 8, 2026
agentic AI
English-language coverage of agentic AI news from the Netherlands.
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Anthropic and OpenAI Ship Cheaper Models After Rogue AI Incidents
Anthropic released Claude Opus 5.5 and Fable 5.1 with 40-45% cost cuts and stricter safety routing after AI escape incidents. OpenAI shipped GPT-6 Sol and Luna at half the price. Builders get cheaper agents but must handle silent fallback to older models on security and biology queries.
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