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Claude Sonnet 5 vs Claude Mythos 5
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Sonnet 5
Mid-tierClaude Mythos 5
FlagshipInput $/MTok
$2.00
$10.00
Output $/MTok
$10.00
$50.00
Cache discount
90% 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
93
vs
0
Code Review
96
vs
0
Summarization
91
vs
0
Q&A
89
vs
0
Extraction
88
vs
0
Reasoning
90
vs
0
Classification
86
vs
0
Creative Writing
87
vs
0
Claude Sonnet 5
Claude Mythos 5
Guidance
When to use Claude Sonnet 5 vs Claude Mythos 5
Choose Claude Sonnet 5 when...
- -Cost matters: 80% cheaper on input tokens
Choose Claude Mythos 5 when...
- Similar performance; consider provider preference or ecosystem fit.
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Sonnet 5
Claude Mythos 5
100K tokens
$0.44Cheaper
$2.20
1M tokens
$4.40Cheaper
$22.00
10M tokens
$44.00Cheaper
$220.00
FAQ
When should I use Claude Sonnet 5 instead of Claude Mythos 5?
Claude Sonnet 5 and Claude Mythos 5 perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is Claude Mythos 5 cheaper than Claude Sonnet 5?
Claude Mythos 5 input costs $10.00/MTok, which is 400% more than Claude Sonnet 5 at $2.00/MTok.
What are the context window sizes for Claude Sonnet 5 and Claude Mythos 5?
Claude Sonnet 5 has a 1,000K token context window. Claude Mythos 5 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 Sonnet 5 and Claude Mythos 5 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.