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preserved-thinking
3 items with this tag.
Sep 29, 2026
Claude Fable 5.1 + Mythos 5.1 — Cheaper Cache Reads, ZDR, and Looser Cyber Gates
claude-ai
anthropic
model-release
fable-5-1
mythos-5-1
claude-fable-5-1
pricing
prompt-caching
data-retention
enterprise-frontier-safeguards
safeguards
preserved-thinking
watermarking
trusted-access
Sep 29, 2026
Claude Opus 5.5 — Fable-5.1-Level Work at 40% Less Than Opus 5
claude-ai
anthropic
model-release
opus-5-5
claude-opus-5-5
claude-5-5-family
pricing
benchmarks
alignment
safeguards
preserved-thinking
fast-mode
effort
model-routing
writing-quality
Sep 29, 2026
Claude Sonnet 5.5 — Near-Opus-5.5 Scores at Half the Per-Token Price
claude-ai
anthropic
model-release
sonnet-5-5
claude-sonnet-5-5
claude-5-5-family
pricing
benchmarks
effort
model-routing
safeguards
preserved-thinking