claude-fable-5

Name: claude-fable-5
Author: Vercel AI Gateway

proprietary

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

Intelligence

Reasoning

Context

Max output

128K

Input price

$10/1M tokens

Output price

$50/1M tokens

Capabilities

Show unsupported (2)

Reasoning & Interaction

Reasoning

Tool Calling

Output Control

Structured Output

JSON Mode

Infrastructure

Streaming

Batch Processing

Details

ProviderVercel AI Gateway

CreatorAnthropic

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 cutoff2026-01

Training data cutoff2026-01

Release date2026-06-09

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

Model	Caps	Perf	Speed	Context	Max out	Pricing
claude-fable-5.1	RTS	—	—	1M	—	$10$50
claude-fable-5	RTJJMSB	—	—	1M	128K	$10$50

API

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