tokevenClaudevsClaude
Claude Mythos 5.1 vs Claude Haiku 5.5
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Mythos 5.1
FlagshipClaude Haiku 5.5
Fast / BudgetInput $/MTok
$10.00
$0.10
Output $/MTok
$50.00
$0.50
Cache discount
98% 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
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 Mythos 5.1
Claude Haiku 5.5
Guidance
When to use Claude Mythos 5.1 vs Claude Haiku 5.5
Choose Claude Mythos 5.1 when...
- Similar performance; consider provider preference or ecosystem fit.
Choose Claude Haiku 5.5 when...
- -Cost matters: 99% cheaper on input tokens
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Mythos 5.1
Claude Haiku 5.5
100K tokens
$2.20
$0.02Cheaper
1M tokens
$22.00
$1.10Cheaper
10M tokens
$220.00
$11.00Cheaper
FAQ
When should I use Claude Mythos 5.1 instead of Claude Haiku 5.5?
Claude Mythos 5.1 and Claude Haiku 5.5 perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is Claude Haiku 5.5 cheaper than Claude Mythos 5.1?
Yes. Claude Haiku 5.5 input costs $0.10/MTok vs $10.00/MTok for Claude Mythos 5.1, saving 99% on input.
What are the context window sizes for Claude Mythos 5.1 and Claude Haiku 5.5?
Claude Mythos 5.1 has a 1M token context window. Claude Haiku 5.5 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 Mythos 5.1 and Claude Haiku 5.5 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.