Fable 5.2 & Mythos 5.2 Explained!

Claude Fable 5.2 and Mythos 5.2 explained in 60 seconds: what they are, who gets access, and how they compare to Opus 5.5. 📢 TestMu AI MCP Server is a remote MCP server that connects MCP-compatible AI clients to your TestMu AI testing environment. Set it up with Claude Code: https://www.testmuai.com/support/docs/testmu-mcp-server/?utm_source=youtube&utm_medium=shorts&utm_campaign=claude-fable-5-2-mythos-5-2-shorts ⚡ Highlights • Fable 5.2 and Mythos 5.2 are versions of the same model: Fable for paid Claude plans and the API, Mythos for vetted organizations only • FrontierSWE v2: Fable 5.2 scores 69.9% vs Opus 5.5 at 62.3% • Chart reading (Chartography): 44.8% → 73.4% over Fable 5.1 • Up to 30% faster output than the 5.1 models • API price cut: $10 → $8 per million input tokens ($50 → $40 output) • Anthropic's advice: Opus 5.5 for daily work, Fable 5.2 for the hardest problems • For testers: connect the TestMu AI MCP Server to Claude Code so Fable can dig into your failed test logs #ClaudeFable #Mythos #Anthropic #ClaudeCode #TestMuAI