tokevenClaudevsClaude
Claude Fable 5.1 vs Claude Opus 4.6
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Fable 5.1
FlagshipClaude Opus 4.6
FlagshipInput $/MTok
$10.00
$5.00
Output $/MTok
$50.00
$25.00
Cache discount
98% off
90% off
Context
1,000K
1,000K
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
0
vs
0
Code Review
0
vs
0
Summarization
0
vs
0
Q&A
0
vs
0
Extraction
0
vs
0
Reasoning
0
vs
0
Classification
0
vs
0
Creative Writing
0
vs
0
Claude Fable 5.1
Claude Opus 4.6
Guidance
When to use Claude Fable 5.1 vs Claude Opus 4.6
Choose Claude Fable 5.1 when...
- Similar performance; consider provider preference or ecosystem fit.
Choose Claude Opus 4.6 when...
- -Cost matters: 50% cheaper on input tokens
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Fable 5.1
Claude Opus 4.6
100K tokens
$2.20
$1.10Cheaper
1M tokens
$22.00
$11.00Cheaper
10M tokens
$220.00
$110.00Cheaper
FAQ
When should I use Claude Fable 5.1 instead of Claude Opus 4.6?
Claude Fable 5.1 and Claude Opus 4.6 perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is Claude Opus 4.6 cheaper than Claude Fable 5.1?
Yes. Claude Opus 4.6 input costs $5.00/MTok vs $10.00/MTok for Claude Fable 5.1, saving 50% on input.
What are the context window sizes for Claude Fable 5.1 and Claude Opus 4.6?
Claude Fable 5.1 has a 1,000K token context window. Claude Opus 4.6 has a 1,000K token context window.
Go deeper on either model
Per-call cost calculators, provider lineups, and price history for both models on this page.
Other comparisons
How Claude Fable 5.1 and Claude Opus 4.6 stack up against the rest of the field.
Track your real costs
Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.