Kimi K3 vs Sonnet 5.5
Kimi K3 vs Sonnet 5.5 compared on intelligence, speed, and cost. Try both models on Zo, the always-on AI computer that does real work for you.
Intelligence
Tievs
Speed
Sonnet 5.5 is fasterStandard
vsCost
Sonnet 5.5 is cheapervs
How to read this
Intelligence comes from SWE-bench Verified, the coding benchmark used by the model picker. Speed means the model is fast enough for the picker threshold. Cost shows the relative tier across Zo models: green is cheaper, amber is pricier.
Model details
1M tokens
Context
1M tokens
—
Knowledge
Jun 2026
Jul 2026
Released
Sep 2026
$3.00/1M
Input
$2.00/1M
$15.00/1M
Output
$10.00/1M
Both Kimi K3 and Sonnet 5.5 are available on Zo Computer. Try them both to see which one works best for your use case.