Claude Fable 5.1

by Anthropic

Released 39 days after Claude Opus 5 · All Anthropic releases

Claude Fable 5.1 from Anthropic — reasoning model on the qynio gateway.

Key info

Input
Output
Features
Context window
1M
Max output
128K
Input price
$10.00 /1M
Output price
$50.00 /1M
Released
  • US residency available
  • No training by default
  • no-KYC deposit available

Available routes

Claude Fable 5.1 runs on 3 different routes through the qynio gateway. Compare residency, zero retention, and training posture at a glance — full data-handling detail per route below.

ProviderRegionZero data retentionTrainingInputOutput
USNot by defaultNo$10.00$50.00
MultiNot by defaultNo$10.00$50.00
MultiNot by defaultNo$10.00$50.00

Uptime and availability

Claude Fable 5.1 runs on 3 independently monitored routes through the qynio gateway. A direct integration leaves you on one of them, the gateway serves whichever is healthy.

100%effective uptime, last 30 days
Averaged across these routes on their own, a single provider reached 97.95% over the same window.
Daily status through the gateway, which serves each request from whichever route is healthy.
3 monitored providers serve Claude Fable 5.1.

Measured over the last 30 days from each provider's official status feed via StatusGator. Refreshed hourly. See uptime for every provider qynio monitors.

Data handling per route

Each route hosting Claude Fable 5.1 has its own privacy posture, residency, and no-KYC terms. Postures are maintained by qynio with a last-verification timestamp.

Anthropic United States🇺🇸

Zero data retention is not on by default — abuse monitoring. No training on customer data. US; wallets; deposit available.

Zero data retention
Not by default — abuse monitoring. Derived from the logging and moderation facts.
Training
No training on customer data.
Logging
Abuse monitoring
Moderation
Not established
Caching
Not established
Subprocessor access
Not established
no-KYC deposit
deposit available
Transfer mechanism
wallets

Azure Multi-region

Zero data retention is not on by default — abuse monitoring, 30-day retention. No training on customer data. GLOBAL; wallets; deposit available.

Zero data retention
Not by default — abuse monitoring, 30-day retention. Derived from the logging and moderation facts.
Training
No training on customer data.
Logging
Abuse monitoring (30-day retention)
Moderation
Not established
Caching
Not established
Subprocessor access
Not established
no-KYC deposit
deposit available
Transfer mechanism
wallets

Google Cloud Multi-region

Zero data retention is not on by default — abuse monitoring. No training on customer data. GLOBAL; wallets; deposit available.

Zero data retention
Not by default — abuse monitoring. Derived from the logging and moderation facts.
Training
No training on customer data.
Logging
Abuse monitoring
Moderation
Not established
Caching
Not established
Subprocessor access
Not established
no-KYC deposit
deposit available
Transfer mechanism
wallets

Benchmarks

Independent benchmark scores — composite indices for reasoning, coding, and math, plus individual eval scores where available.

Global rank#1 of 630 LLMs
TierFrontier
Output speed71 tok/s
First token142.27s
Intelligence Index65.7
Coding Index81.6
Reasoning & knowledge
GPQA Diamond
94%
Humanity's Last Exam
59%
Long-context reasoning
80%
Coding
SciCode
62%

Get started

Call Claude Fable 5.1 through the qynio gateway with one API key. Let your coding agent set it up, or call it directly — qynio is drop-in compatible with the OpenAI, Anthropic, and Google AI SDKs.

Set it up with your agent

Copy this and paste it into a coding agent like Claude Code, Cursor or Codex and it'll wire up qynio for you.

Or call it directly

import OpenAI from "openai";
const client = new OpenAI({
apiKey: process.env.QYN_API_KEY,
baseURL: "https://api.qyn.io/v3/compat",
});
const completion = await client.chat.completions.create({
model: "anthropic/claude-fable-5-1",
messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);

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