Scores updated · 2 tests both models report · How we compare
What it costs
Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.
Claude Sonnet 5.5 costs 75% less for the same work.
Every test, side by side
All 2 tests both models report. The winning score is in its model's colour; marks a score checked independently.
Other results2 tests
- Terminal-Bench-Science 0.1Claude Mythos 5.2 by 2275.353.3+22
- Terminal-Bench 4.0tie70.570.6tie
Questions people ask
Which is cheaper?
Claude Mythos 5.2 costs $8.00 per million input tokens and $40.00 per million output tokens; Claude Sonnet 5.5 costs $2.00 and $10.00. That makes Claude Sonnet 5.5 about 75% cheaper for the same work.
How do you compare the two?
We use the 2 benchmark tests both models have published scores on. None of them is in the eight capability areas we count, so this page lists them without a verdict. Each score is the one shown on the model's own page.