claude-fable-5

proprietary

Anthropic's most capable widely released model, for the most demanding reasoning and long-horizon agentic work

Intelligence
Reasoning
Context
1M
Max output
128K
Input price
$10/1M tokens
Output price
$50/1M tokens

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling
Output Control
Structured Output
JSON Mode
Infrastructure
Streaming
Batch Processing

Details

Provider Vercel AI Gateway
Creator Anthropic
Familyclaude-fable
Licenseproprietary
Statusactive
Typechat
Input modalitiestext, image
Output modalitiestext
Open weightNo
Parameters—
Architecture—
Context window1M tokens
Max input—
Max output128K tokens
Reasoning tokens—
Knowledge cutoff
Training data cutoff
Release date
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Pricing

Input
$10
Output
$50
Cache write
—
Cache read
—
Batch in
—
Batch out
—

Family Comparison: claude-fable

ModelContextMax outPricing
claude-fable-5.11M—$10$50
claude-fable-51M128K$10$50

API

GET/v1/models/vercel/anthropic/claude-fable-5

claude-fable-5

Anthropic's most capable widely released model, for the most demanding reasoning and long-horizon agentic work

Changes · 3 entries
anthropic/claude-fable-5createca7a400Nov 2, 2026, 03:02 AM
anthropic/claude-fable-5update53ef452Jul 9, 2026, 02:32 AM
familyclaude→claude-fable
anthropic/claude-fable-5created68a4f1Jun 10, 2026, 02:10 AM