Claude Fable 5.1

claude-fable-5.1 by Anthropic Released September 2, 2026
ReasoningFunction callingStructured outputPrompt cachingWeb searchComputer useImage inputFile inputAudio inputVideo inputEU hostingFree endpointUp to % off
Input from
$10 / 1M
Output from
$50 / 1M
Cached input from
$0.25 / 1M
Context window
1M
Endpoints
4
from 2 providers
Regions
Global, Europe, United States

About Claude Fable 5.1

Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors, front-end and visual…

Claude Fable 5.1 is a chat model by Anthropic, available on Eden AI through 4 endpoints from 2 providers, from $10 per million input tokens and $50 per million output tokens, with a context window of up to 1M tokens.

Providers and prices

4 endpoints from 2 providers, cheapest first, in USD per million tokens. Every one is called with the same Eden AI key: pin one with its endpoint ID, or let Eden AI route for you. .

Endpoint
Region
Context
Input / 1M
Output / 1M
Cached / 1M
Supports
AnthropicOfficial−%anthropic/claude-fable-5-1
Global
1M
$10$10
$50
$0.25
ReasoningToolsJSONCacheVisionWeb
Google CloudOfficial−%vertex/claude-fable-5-1
Global
1M
$10$10
$50
$0.25
ReasoningToolsJSONCacheVisionWeb
Google Cloud (Europe)Official−%vertex/claude-fable-5-1@eu
Europe
1M
$11$11
$55
$0.275
ReasoningToolsJSONCacheVisionWeb
Google Cloud (United States)Official−%vertex/claude-fable-5-1@us
United States
1M
$11$11
$55
$0.275
ReasoningToolsJSONCacheVisionWeb

Performance

Measured on real Eden AI traffic over the last 30 days. Endpoints with too little traffic are not shown.

Fastest first token
2.78 s
Google Cloud
Lowest latency
1.62 s
Anthropic
Highest throughput
61.29 tok/s
Google Cloud
Best availability
99.97%
Anthropic
Endpoint
First token
Latency p50
Latency p95
Throughput
Availability
Cache hits
Tool errors
JSON errors
Anthropic
4.01 s
1.62 s
9.39 s
33.74 tok/s
99.97%
87.19%
1.45%
0%
Google Cloud
2.78 s
7.64 s
105.03 s
61.29 tok/s
99.74%
70.12%
0.7%
0%
Google Cloud (Europe)
6.27 s
5.55 s
72.21 s
33.13 tok/s
99.07%
13.46%
0%
0%
Google Cloud (United States)
s
s
s
tok/s
%
%
%
%

Estimate your monthly cost

Enter your expected volume to compare every endpoint at once.

Call Claude Fable 5.1 with Eden AI

Use the model ID to let Eden AI pick an endpoint, or an endpoint ID from the table above to pin one.

import requests

response = requests.post(
    "https://api.edenai.run/v3/chat/completions",
    headers={"Authorization": "Bearer YOUR_EDENAI_API_KEY"},
    json={
        "model": "",
        "messages": [{"role": "user", "content": "Hello!"}],
    },
)
print(response.json())

Questions about Claude Fable 5.1

On Eden AI, prices for this model start at $10 per million input tokens and $50 per million output tokens. Prices differ by endpoint; the providers table lists each one. .

Up to 1M tokens, depending on the endpoint.

4 endpoints from 2 providers, available in: Global, Europe, United States. All of them are called with the same Eden AI API key.

Yes. At least one endpoint is hosted in Europe; pin it with its endpoint ID from the providers table to keep requests in the EU.

Over the last 30 days, the fastest first token was 2.78 s (Google Cloud) and the highest throughput was 61.29 tokens per second (Google Cloud).