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Guide

Use Claude with the Anthropic SDK at up to 55% off

If your code already talks to Claude through the Anthropic SDK, switching to FrugalDev is a one-line change: set the base URL and pass your prepaid key. Same models, same API, up to 55% lower per-token cost.

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Drop-in with the Anthropic SDK

Point the official Anthropic SDK at the FrugalDev base URL and pass your prepaid key. Change the model string to claude-fable-5 — no other code changes.

import anthropic

client = anthropic.Anthropic(
    api_key="YOUR_FRUGALDEV_KEY",
    base_url="https://api-direct.apikey.cloud/proxy",
)
message = client.messages.create(
    model="claude-fable-5",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Hello!"}],
)
print(message.content[0].text)

Per-token pricing

USD / 1M tokens
ModelInputOutputCache RCache WOfficial I/OSave
Claude Fable 5$4.53$22.63$0.46$5.67$10 / $50−55%
Claude Opus 4.8$2.27$11.32$0.23$2.83$5 / $25−55%
Claude Opus 4.7$2.27$11.32$0.23$2.83$5 / $25−55%
Claude Opus 4.6$2.27$11.32$0.23$2.83$5 / $25−55%
Claude Sonnet 4.6$1.37$6.80$0.13$1.70$3 / $15−55%
Claude Haiku 4.5$0.46$2.27$0.046$0.57$1 / $5−55%

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