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Claude Fable 5

anthropic/claude-fable-5

anthropic

Anthropic's most capable model — Mythos-class tier above Opus, for the most demanding reasoning and long-horizon agentic work. 1M context, 128K output, always-on thinking

Code Examples

from blockrun_llm import LLMClient

client = LLMClient()  # Uses BLOCKRUN_WALLET_KEY (never sent to server)
response = client.chat("anthropic/claude-fable-5", "Hello!")

Pricing

Input$10.00 / 1M tokens
Output$50.00 / 1M tokens
Context1M tokens
Max Output128K tokens

5% markup on official anthropic API prices.

Payment

Network
Base
Currency
USDC
Protocol
x402

Pay per request with USDC on Base. No subscription required.

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