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TKBK

Claude Fable 5.1 via API

Fable 5.1 is the most capable Claude model: autonomous agents, large refactors, hard reasoning. Available through a TKBK key in Claude Code, Cursor, Cline and any Anthropic SDK.

Updated:

Flagship1M contextAnthropic SDK
Buy a keyPay with crypto in Telegram
Model$ per 1M input / output
Claude Fable 5.1$10 / $50
Claude Opus 5.5$4 / $20
Claude Sonnet 5$2 / $10
Claude Code
export ANTHROPIC_BASE_URL="https://api.tkbk.online"
export ANTHROPIC_AUTH_TOKEN="cr_your_key"
export ANTHROPIC_MODEL="claude-fable-5-1"
claude
ℹ

Fable 5.1 costs 2.5x Opus 5.5. Run everyday work on Sonnet 5 or Opus 5.5 and switch to Fable with /model for the hard parts.

Pricing

What it costs

You buy a pack — the key gets that much API volume. Credit never expires, top up any time.

volume packs
$1 — $1 000

Bigger packs are cheaper per unit. The key is issued automatically right after payment, 24/7.

940
sales
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reviews
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delivery
Buy a keyPay with crypto in Telegram
FAQ

Frequently asked questions

No, but a small pack is enough to try it; the Telegram bot also gives a free $0.3 trial key.

Questions left? Message us — we answer in English too.

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