Claude Fable 5.1

Price

Input

$10 per 1M tokens

Output

$50 per 1M tokens

Notes

Base price, full 1M context at standard rate. Cache hits $0.25/1M. Batch 50% off. US-only inference 1.1x.

Source

Anthropic pricing , last verified October 8, 2026

No markup on model usage: you pay the provider's list price.

Model

Context

1M (1,000,000 tokens)

Max output

128,000 tokens

Modality

Text and image

Input

text, image

Output

text

Weights

Closed

Released

September 1, 2026

Tags

reasoning, coding, agents, vision, long-context

Docs

Provider documentation

Data policy

Prompts go to

Anthropic (global routing by default)

Retention

Not used for model training without express permission. Claude Fable 5.1 is a Covered Model that requires 30-day data retention and is not available under ZDR unless Anthropic expressly authorizes it

Zero data retention

Not offered

Region

Global by default, US-only inference via inference_geo at 1.1x pricing (Claude 4.6 and later)

Policy

Anthropic data policy

Summarised from the provider's published terms. The provider's own policy is what applies.

Call it with any OpenAI SDK

Available when the model is live

from openai import OpenAI

client = OpenAI(
    base_url="https://api.safeguard.sh/v1",
    api_key="SAFEGUARD_API_KEY",
)

response = client.chat.completions.create(
    model="anthropic/claude-fable-5-1",
    messages=[{"role": "user", "content": "Hello"}],
)
print(response.choices[0].message.content)

Base URL https://api.safeguard.sh/v1, model anthropic/claude-fable-5-1.