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Description

Claude Fable 5.5 is an anticipated but currently unannounced model in Anthropic's Claude family, and Anthropic has not confirmed that a model with this name will be released. As of September 30, 2026, Claude Fable 5.1 remains the latest officially documented Fable model. Fable represents Anthropic's highest-end model tier for demanding reasoning and long-horizon agentic work, while the newer Opus 5.5 and Sonnet 5.5 occupy lower-cost positions in the Claude lineup. Anthropic's current documentation gives Fable 5.1 a 1-million-token context window and maximum output length of 128,000 tokens. It supports text and image inputs with text output and uses adaptive thinking that remains active throughout model operation. Fable 5.1 defaults to high reasoning effort and is listed as having a June 2026 reliable knowledge cutoff and training-data cutoff. API pricing is $10 per million input tokens and $50 per million output tokens, while prompt-cache reads cost $0.25 per million tokens and Batch API processing receives a 50% input and output discount. Anthropic's official documentation currently provides model identifiers for Fable 5.1 across the Claude API, Amazon Bedrock, Google Cloud, Microsoft Foundry, and Claude Platform on AWS. No equivalent model identifier, specifications, benchmark results, pricing, availability information, or release schedule has been published for Claude Fable 5.5.

Description

Claude Opus 4 is the pinnacle of AI coding models, leading the way in software engineering tasks with an impressive SWE-bench score of 72.5% and Terminal-bench score of 43.2%. Its ability to handle complex challenges, large codebases, and multiple files simultaneously sets it apart from all other models. Opus 4 excels at coding tasks that require extended focus and problem-solving, automating tasks for software developers, engineers, and data scientists. This AI model doesn’t just perform—it continuously improves its capabilities over time, handling real-world challenges and optimizing workflows with confidence. Available through multiple platforms like Anthropic API, Amazon Bedrock, and Gemini Enterprise Agent Platform, Opus 4 is a must-have for cutting-edge developers and businesses looking to stay ahead.

API Access

Has API Yes 

API Access

Has API Yes 

Screenshots View All

No images available

Screenshots View All

Integrations

Bash Yes 
C Yes 
Claude Yes 
Claude Code Yes 
Claude Pro Yes 
DataGrip Yes 
Emergent Yes 
Gemini Enterprise Agent Platform Yes 
GitHub Copilot Yes 
Go Yes 
IntelliJ IDEA Yes 
Kotlin Yes 
Model Context Protocol (MCP) Yes 
PhpStorm Yes 
PyCharm Yes 
Rider Yes 
RustRover Yes 
Scalestack Yes 
Snowflake Cortex AI Yes 
StackAI Yes 

Integrations

Bash Yes 
C Yes 
Claude Yes 
Claude Code Yes 
Claude Pro Yes 
DataGrip Yes 
Emergent Yes 
Gemini Enterprise Agent Platform Yes 
GitHub Copilot Yes 
Go Yes 
IntelliJ IDEA Yes 
Kotlin Yes 
Model Context Protocol (MCP) Yes 
PhpStorm Yes 
PyCharm Yes 
Rider Yes 
RustRover Yes 
Scalestack Yes 
Snowflake Cortex AI Yes 
StackAI Yes 

Pricing Details

No price information available.
Free Trial No 
Free Version No 

Pricing Details

$15 / 1 million tokens (input)
Input: $15 per 1 million tokens
Output: $75 per 1 million tokens
Free Trial No 
Free Version No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Vendor Details

Company Name

Anthropic

Founded

2021

Country

United States

Website

claude.ai

Vendor Details

Company Name

Anthropic

Founded

2021

Country

United States

Website

claude.ai

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