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Polymarket Opens Betting Market on Whether Anthropic Will Make Claude Fable 5 a Permanent Paid-Plan Feature

July 15, 2026 at 06:18 EDT

Foundation Models
Sales & Business

Prediction platform Polymarket has launched a market asking whether Anthropic will announce permanent paid-plan access for its Claude Fable 5 model, spotlighting a promotion the company has repeatedly extended but never formally committed to keeping.

July 15, 2026 · Prediction Market

Will Fable 5 Access Become Permanent — or Expire?

Traders are now wagering on whether Anthropic will lock in paid-plan access to its Claude Fable 5 model — a perk the company has repeatedly extended but never called "permanent." The current deadline: July 19.

50%

of weekly usage limit routable to Fable 5, then overflow shifts to credits

token context window; max output of 128K tokens

90%

discount available via prompt caching; batch runs at half price

API Pricing — Output Costs 5× the Input

Per million tokens. Critics argue this makes Fable 5 impractical outside the subscription bundle.

$10

input

$50

output

The Road to July 19

Jun 9

Fable 5 released

→

Jun 12

Suspended — export controls

→

Jul 1

Restored to service

→

Jul 19

Current extended deadline

Enthusiasts

Outperforms Opus 4.8 on complex, long-horizon tasks
Excels at multi-day autonomous & agentic work
Solved stubborn problems in ~30 minutes

Critics

Heavy token use — one prompt can burn limits
Aggressive safety layer falls back to Opus 4.8
Even benign requests get rejected

The deciding factor is compute capacity.

Anthropic has framed inclusion as temporary and avoided the word "permanent" — leaving the outcome open enough to trade: does access harden into a commitment, or revert to a metered credit model?

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