Claude Mythos 5
vendorAnthropic · claude-mythos-5 · prices updated June 18, 2026
Input · 1M tokens
$10
Cached input · 1M
$1−90%
Output · 1M tokens
$50
Price history
inputoutput
Specifications
Context window1,000,000
Knowledge cutoffJan 2026
Tokenizertiktoken (cl100k_base)
Batch API−50% off the price
Tools
Web SearchCode InterpreterComputer UseMCP
Exact token counts: local tiktoken tokenizer (cl100k_base). Tool calls are billed by the provider separately.
About the model
Limited access (Project Glasswing, invitation-only) — same price as Fable 5