Claude Fable 5

by Anthropic

Anthropic's most capable widely released model, for the most demanding reasoning and long-horizon agentic work. 1M context, adaptive thinking always on.

Key info

Input
Output
Features
Context window
1M
Max output
128K
Input price
$10.00 /1M
Output price
$50.00 /1M
  • US residency available
  • Zero data retention via Enterprise
  • No training by default
  • GDPR DPA available

Benchmarks

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

Global rank#1 of 526 LLMs
TierFrontier
Output speed55 tok/s
First token42.33s
Intelligence Index64.9
Coding Index62.0
GPQA Diamond
93%
Humanity's Last Exam
53%
SciCode
60%
IFBench
63%
Long-context reasoning
70%
Terminal-Bench Hard
63%
τ²-Bench Telecom
99%

Available routes

Claude Fable 5 runs on 2 different routes through the Opper gateway. Compare residency, ZDR, and training posture at a glance — full data-handling detail per route below.

ProviderRegionZero data retentionTrainingInputOutput
AnthropicUSEnterpriseNo$10.00$50.00
Google CloudUSEnterpriseNo$10.00$50.00

Training posture across routes: No training on prompts by default.

Data handling per route

Each route hosting Claude Fable 5 has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

Anthropic United States🇺🇸

Zero data retention is available via Opper Enterprise contract. No training on customer data. US; SCCs; DPA available.

Zero data retention
Available via Opper Enterprise contract.
Training
No training on customer data.
Logging
Abuse monitoring
Third-party access
Provider may share with subprocessors / partners
GDPR DPA
DPA available
Transfer mechanism
SCCs

Google Cloud United States🇺🇸

Zero data retention is available via Opper Enterprise contract. No training on customer data. US; SCCs; DPA available.

Zero data retention
Available via Opper Enterprise contract.
Training
No training on customer data.
Logging
Abuse monitoring
Third-party access
None disclosed
GDPR DPA
DPA available
Transfer mechanism
SCCs

Compare Claude Fable 5 with…

Side-by-side on privacy, EU hosting, pricing, and benchmarks.

Other models from Anthropic

Start building with 300+ models

One API key. Every major provider. Up and running in minutes.

Get startedView Documentation
Claude Fable 5 by Anthropic — pricing, benchmarks | Opper AI