tokevenClaudevsClaude
Claude Opus 4.8 vs Claude Fable 5
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Opus 4.8
FlagshipClaude Fable 5
FlagshipInput $/MTok
$5.00
$10.00
Output $/MTok
$25.00
$50.00
Cache discount
90% off
90% off
Context
200K
1,000K
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
95
vs
96
Code Review
94
vs
95
Summarization
88
vs
90
Q&A
85
vs
88
Extraction
82
vs
85
Reasoning
97
vs
98
Classification
80
vs
82
Creative Writing
93
vs
95
Claude Opus 4.8
Claude Fable 5
Guidance
When to use Claude Opus 4.8 vs Claude Fable 5
Choose Claude Opus 4.8 when...
- -Cost matters: 50% cheaper on input tokens
Choose Claude Fable 5 when...
- -You need strong reasoning (confidence 98 vs 97)
- -You need strong code generation (confidence 96 vs 95)
- -You need strong code review (confidence 95 vs 94)
- -You need strong creative writing (confidence 95 vs 93)
- -You need a larger context window (1,000K vs 200K)
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Opus 4.8
Claude Fable 5
100K tokens
$1.10Cheaper
$2.20
1M tokens
$11.00Cheaper
$22.00
10M tokens
$110.00Cheaper
$220.00
FAQ
When should I use Claude Opus 4.8 instead of Claude Fable 5?
Claude Opus 4.8 and Claude Fable 5 perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is Claude Fable 5 cheaper than Claude Opus 4.8?
Claude Fable 5 input costs $10.00/MTok, which is 100% more than Claude Opus 4.8 at $5.00/MTok.
What are the context window sizes for Claude Opus 4.8 and Claude Fable 5?
Claude Opus 4.8 has a 200K token context window. Claude Fable 5 has a 1,000K token context window.
Track your real costs
Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.