ClaudevsClaude

Claude Sonnet 4.6 vs Claude Fable 5

Side-by-side comparison of pricing, task quality, and projected cost at higher scale.

Pricing

Side-by-side pricing

Claude Sonnet 4.6

Mid-tier

Claude Fable 5

Flagship
Input $/MTok
$3.00
$10.00
Output $/MTok
$15.00
$50.00
Cache discount
90% off
90% off
Context
1M
1M

Quality

Task confidence comparison

Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
57
vs
72
Code Review
95
vs
95
Summarization
61
vs
77
Q&A
88
vs
88
Extraction
71
vs
75
Reasoning
85
vs
90
Classification
84
vs
82
Creative Writing
69
vs
72
Claude Sonnet 4.6
Claude Fable 5

Guidance

When to use Claude Sonnet 4.6 vs Claude Fable 5

Choose Claude Sonnet 4.6 when...

  • -You need strong classification (confidence 84 vs 82)
  • -Cost matters: 70% cheaper on input tokens

Choose Claude Fable 5 when...

  • -You need strong reasoning (confidence 90 vs 85)
  • -You need strong summarization (confidence 77 vs 61)
  • -You need strong extraction (confidence 75 vs 71)
  • -You need strong code generation (confidence 72 vs 57)

At scale

Cost at scale

Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Sonnet 4.6
Claude Fable 5
100K tokens
$0.66Cheaper
$2.20
1M tokens
$6.60Cheaper
$22.00
10M tokens
$66.00Cheaper
$220.00

FAQ

When should I use Claude Sonnet 4.6 instead of Claude Fable 5?

Claude Sonnet 4.6 outperforms Claude Fable 5 for Classification. It costs $3.00/$15.00 per million tokens (input/output).

Is Claude Fable 5 cheaper than Claude Sonnet 4.6?

Claude Fable 5 input costs $10.00/MTok, which is 233% more than Claude Sonnet 4.6 at $3.00/MTok.

What are the context window sizes for Claude Sonnet 4.6 and Claude Fable 5?

Claude Sonnet 4.6 has a 1M token context window. Claude Fable 5 has a 1M token context window.

Track your real costs

Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.