tokevenClaudevsClaude
Claude Haiku 4.5 vs Claude Fable 5.1
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Haiku 4.5
Fast / BudgetClaude Fable 5.1
FlagshipInput $/MTok
$1.00
$10.00
Output $/MTok
$5.00
$50.00
Cache discount
90% off
98% off
Context
200K
1M
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
72
vs
74
Code Review
70
vs
0
Summarization
82
vs
71
Q&A
86
vs
0
Extraction
88
vs
75
Reasoning
65
vs
92
Classification
90
vs
0
Creative Writing
60
vs
78
Claude Haiku 4.5
Claude Fable 5.1
Guidance
When to use Claude Haiku 4.5 vs Claude Fable 5.1
Choose Claude Haiku 4.5 when...
- -You need strong extraction (confidence 88 vs 75)
- -You need strong summarization (confidence 82 vs 71)
- -Cost matters: 90% cheaper on input tokens
Choose Claude Fable 5.1 when...
- -You need strong reasoning (confidence 92 vs 65)
- -You need strong creative writing (confidence 78 vs 60)
- -You need strong code generation (confidence 74 vs 72)
- -You need a larger context window (1M vs 200K)
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Haiku 4.5
Claude Fable 5.1
100K tokens
$0.22Cheaper
$2.20
1M tokens
$2.20Cheaper
$22.00
10M tokens
$22.00Cheaper
$220.00
FAQ
When should I use Claude Haiku 4.5 instead of Claude Fable 5.1?
Claude Haiku 4.5 outperforms Claude Fable 5.1 for Extraction, Summarization. It costs $1.00/$5.00 per million tokens (input/output).
Is Claude Fable 5.1 cheaper than Claude Haiku 4.5?
Claude Fable 5.1 input costs $10.00/MTok, which is 900% more than Claude Haiku 4.5 at $1.00/MTok.
What are the context window sizes for Claude Haiku 4.5 and Claude Fable 5.1?
Claude Haiku 4.5 has a 200K token context window. Claude Fable 5.1 has a 1M 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 Haiku 4.5 and Claude Fable 5.1 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.