# Kimi K3 vs Step 3.5 Flash

As of Oct 14, 2026, Kimi K3 leads Step 3.5 Flash in 4 of 4 shared categories: General LLM, Reasoning, Long context, and Factuality.

Kimi K3: $4.125 per 1M blended tokens.

Step 3.5 Flash: $0.15 per 1M blended tokens.

Kimi K3: open weights.

Step 3.5 Flash: open weights.

- Which to pick, General LLM: As of Oct 14, 2026, Kimi K3 leads Step 3.5 Flash in General LLM at #13 against #123.
- Which to pick, Reasoning: As of Oct 14, 2026, Kimi K3 leads Step 3.5 Flash in Reasoning at #7 against #124.
- Which to pick, Long context: As of Oct 14, 2026, Kimi K3 leads Step 3.5 Flash in Long context at #8 against #119.
- Which to pick, Factuality: As of Oct 14, 2026, Kimi K3 leads Step 3.5 Flash in Factuality at #19 against #99.

As of Oct 14, 2026, Kimi K3 is tied for state of the art in General LLM (since Oct 13, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).

As of Oct 14, 2026, Step 3.5 Flash is ranked #99 in Factuality (since Oct 14, 2026; sources LMArena Text factuality; methodology v1.0).