Claude Fable 5.1

anthropic.claude-fable-5-1

ReasoningVision

Model details

Model: anthropic.claude-fable-5-1
Provider: amazon-bedrock
API: bedrock-converse-stream
Base URL: https://bedrock-runtime.us-east-1.amazonaws.com
Input: text, image
Reasoning: Yes
Context window: 1,000,000
Max tokens: 128,000

Pricing

USD per million tokens.

Input: $10
Output: $50
Cache read: $0.25
Cache write: $12.5

A reference estimate. Provider pricing and context tiers may vary.

PLAN YOUR USAGE

Session cost calculator

Estimate the model requests made during an agent session.

Session shape

Model requests

Starting context

Context added / request

Output / request

Warm-request cache reuse96%

Starting context is already cached

Bill uncached reusable context as cache writes

Estimated session$1.71

Uncached input: $0.80
Cache reads: $0.16
Cache writes: $0.0000
Output: $0.75
Without caching: $8.00

25 model requests

The first request starts cold unless marked otherwise. Output is billed separately from context growth. Providers differ in eligibility, context tiers, rounding, and retention.

Claude Fable 5.1

Model details

Show configuration

Pricing

Session cost calculator