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Claude Fable 5 1 API

Anthropic·1M contextChatVisionReasoningTool calling

Top-tier flagship · Peak performance

Overview

About this model

Anthropic Highest-tier model 5.1 version, designed for the most complex reasoning, coding, and long-horizon Agent tasks, with 1M ultra-long context.

Capabilities

Capability matrix

TextSupported

VisionSupported

Audio—

ToolsSupported

JSONSupported

ReasoningSupported

Pricing and groups

Routes and pricing

Claude-MAX (dedicated to cc, only connects to cli)29% of baseCollecting data

Claude Official Max full-power version, for use only with Claude Code (CLI); if you need to use Claude Desktop, you must switch to another group. Supports Fable 5.

Input

$2.9 / 1M

Output

$14.5 / 1M

Cache read

$0.0725 / 1M

Cache write

$3.62 / 1M

Recent availabilityPast 24 hours · Active probes—

24h ago16h ago8h agoNow

Claude Official Max Line31% of baseOperational

Official full-power line, supports all scenarios, prioritizing stability and performance.

Input

$3.1 / 1M

Output

$15.5 / 1M

Cache read

$0.0775 / 1M

Cache write

$3.88 / 1M

Recent availabilityPast 24 hours · Active probes100%

24h ago16h ago8h agoNow

Prices in USD per 1M tokens. Rates follow provider adjustments; live prices in Model Explorer as the reference.

Snapshot: 2026-10-07 23:09. Availability reflects active probes over the past 24 hours; performance reflects actual calls.

Compare

Group comparison

GroupInput/output priceSpeedStability

Claude-MAX (dedicated to cc, only connects to cli)$2.9 / $14.5——

Claude Official Max Line$3.1 / $15.572.2 t/s100%

API

Integration example

All models share one OpenAI-compatible endpoint. To switch models, change the model field. One key accesses every model.

Python · OpenAI SDK

# pip install openai
from openai import OpenAI

client = OpenAI(
    base_url="https://api.yomiapi.com/v1",
    api_key="sk-your-yomi-key",
)

resp = client.chat.completions.create(
    model="claude-fable-5-1",
    messages=[{"role": "user", "content": "Hello"}],
)
print(resp.choices[0].message.content)

curl · OpenAI compatible

curl https://api.yomiapi.com/v1/chat/completions \
  -H "Authorization: Bearer sk-your-yomi-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-fable-5-1",
    "messages": [{"role": "user", "content": "Hello"}]
  }'

curl · Native Anthropic protocol

curl https://api.yomiapi.com/v1/messages \
  -H "x-api-key: sk-your-yomi-key" \
  -H "anthropic-version: 2023-06-01" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-fable-5-1",
    "max_tokens": 1024,
    "messages": [{"role": "user", "content": "Hello"}]
  }'

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