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How do you call the Claude Fable 5 API?

If you already use the official OpenAI SDK, swap base_url and api_key — every other line stays as it is.

Confirm the model identifier：Use claude-fable-5 in the request configuration and first verify in a test environment that the model returns the expected response.
Query the pricing API：Request https://api.openlux.ai/api/pricing and save the query time and raw response for subsequent pricing verification.
Confirm the account group：Confirm the group associated with the current account and its multiplier. The actual cost is calculated by multiplying the claude-fable-5 baseline price by that multiplier.
Estimate input, output, and cache costs：Record token usage for input, output, and cache hits separately. The corresponding baseline prices for this model are $10, $50, and $1 / 100 ten-thousand tokens.
Complete end-to-end verification：Before going live, independently verify API parameters, response formats, error handling, latency, and rate-limiting behavior, and retain reproducible test records.

Complete code example

import json
from urllib.request import urlopen

url = "https://api.openlux.ai/api/pricing"
with urlopen(url, timeout=20) as response:
    pricing = json.load(response)

print(json.dumps(pricing, ensure_ascii=False, indent=2))

# 在输出中检索模型标识：claude-fable-5
# 调用接口的请求地址、鉴权方式和参数格式请以实际接入文档为准。

OpenLux Claude Fable 5 API relay

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Query the pricing API and confirm the account group first, then verify the Claude Fable 5 request path

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Official site: https://api.openlux.ai

Last updated 2026-08-05　|　Written and maintained by OpenLux.
Latency and pricing figures come from our own measurements. Where they differ from the vendor's site, the vendor's live page wins.

How do you call the Claude Fable 5 API?

How do you call the Claude Fable 5 API?

Complete code example

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