Google Agent Platform

Claude Fable 5

claude-fable-5

Claude model for creative writing, analysis, and controlled agent workflows

VisionTool CallingCachingReasoningWeb
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Quick facts

Released
June 2026
Model type
Proprietary
Model family
Claude Fable
Input modalities
Supports: Text, Image, PDF
Output modalities
Supports: Text
Available regions
USEUGlobal
Zero data retention
No
Available on nexos.ai
Yes

Pricing and specifications of Claude Fable 5

Explore Claude Fable 5 pricing per million input, output, and cached tokens, along with its context window and maximum output limits.

Input / 1MOutput / 1MCached input / 1MContextMax output
$10.00$50.00$1.001M128K

Available providers

Provider Region Input / 1M Output / 1M Cache / 1M ZDR
Google Agent Platform EU $11.00 $55.00 $1.10 –
Google Agent Platform Global $10.00 $50.00 $1.00 –
Google Agent Platform US $11.00 $55.00 $1.10 –
Bedrock Global $10.00 $50.00 $1.00 –

Specifications

Context window

1M tokens

Max output

128K tokens

Input

Output

Benchmarks of Claude Fable 5

How Claude Fable 5 scores on independent benchmarks tracked by Epoch AI.

Quality

Epoch Capabilities Index

164.1

ECI rank

#11 of 256

GPQA Diamond

Graduate-level scientific reasoning

84.5%

ARC-AGI-2

Abstract reasoning on novel puzzles

89.2%

FrontierMath

Expert-level mathematics

91.6%

OTIS Mock AIME

Competition mathematics

100.0%

WeirdML

Novel machine-learning tasks

91.9%

APEX-Agents

Long-horizon professional services tasks

63.6%

Remote Labor Index

Real freelance projects, end to end

16.1%

SimpleQA Verified

Short-form factual accuracy

70.7%

Benchmark data: Epoch AI, ‘Capabilities & benchmarking’, licensed under CC BY 4.0.

Quickstart

Start using Claude Fable 5

Model ID

claude-fable-5

Base URL

https://api.nexos.ai/v1

Code

 
from openai import OpenAI

# Get your API key from the nexos.ai dashboard
client = OpenAI(
    base_url="https://api.nexos.ai/v1",
    api_key="YOUR_NEXOS_API_KEY",
)

response = client.chat.completions.create(
    model="claude-fable-5",
    messages=[{"role": "user", "content": "Hello!"}],
)

print(response.choices[0].message.content)
import OpenAI from 'openai';

// Get your API key from the nexos.ai dashboard
const client = new OpenAI({
  baseURL: 'https://api.nexos.ai/v1',
  apiKey: 'YOUR_NEXOS_API_KEY',
});

const response = await client.chat.completions.create({
  model: 'claude-fable-5',
  messages: [{ role: 'user', content: 'Hello!' }],
});

console.log(response.choices[0].message.content);
curl https://api.nexos.ai/v1/chat/completions \
  -H "Authorization: Bearer YOUR_NEXOS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-fable-5",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Other Anthropic models

Models from Anthropic with comparable capabilities and pricing.

ModelInputOutputContextCapabilitiesRegion
Claude Fable 5.1$11.00$55.00872K
VisionToolsCacheThinkWeb
USEUGlobal
Claude Fable 5.2$8.00$40.00872K
VisionToolsCacheThinkWeb
USEUGlobal
Claude Haiku 5.5$0.11$0.55872K
VisionToolsCacheThinkWeb
USEUGlobal

Start building with Claude Fable 5

Access Claude Fable 5 and 200+ other AI models through nexos.ai.

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FAQ

Common questions about Claude Fable 5, its availability and usage.