Sep 2 • General discussion
🚨 Claude Fable 5.1 just dropped (the cache cut is the real headline)
Fam, peep this.
Anthropic just shipped Claude Fable 5.1 (and Mythos 5.1 for trusted access only).
Same base price as Fable 5. $10 in / $50 out per million tokens.
What changed is the agent bill. Cache reads got cut 75%, down to $0.25 per million tokens.
Anthropic says that lands around 25% cheaper on typical work, and up to about 45% on highly agentic runs.
That's us. Long Claude Code sessions. Big context. Tools firing over and over.
Fable 5.1 is also stronger on long-running coding. Terminal-Bench 4.0 55.8% vs 42% on Fable 5. They also say Claude Code should see about 60% fewer false-positive cyber safeguard interruptions.
If you're still on Fable 5 for heavy loops, try `claude-fable-5-1` and lean on caching hard.
Drop what you see on your first long session. Bill and quality. I want receipts.
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🚨 Claude Fable 5.1 just dropped (the cache cut is the real headline)
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