# Kimi K2 5 Instant vs O3 Mini

As of Oct 15, 2026, Kimi K2 5 Instant leads O3 Mini in 2 of 3 shared categories: Reasoning and Long context.

Kimi K2 5 Instant: price per 1M tokens is unset in the catalog.

O3 Mini: $1.9250000000000003 per 1M blended tokens.

Kimi K2 5 Instant: open weights.

O3 Mini: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, O3 Mini leads Kimi K2 5 Instant in General LLM at #10 against #103.
- Which to pick, Reasoning: As of Oct 15, 2026, Kimi K2 5 Instant leads O3 Mini in Reasoning at #89 against #172.
- Which to pick, Long context: As of Oct 15, 2026, Kimi K2 5 Instant leads O3 Mini in Long context at #95 against #186.

As of Oct 15, 2026, Kimi K2 5 Instant is ranked #77 in Coding › Web dev (since Oct 15, 2026; sources LMArena WebDev; methodology v1.0).

As of Oct 15, 2026, O3 Mini is a former state-of-the-art holder in Reasoning (since Feb 9, 2025; sources LMArena Text (style-controlled, hard prompts); methodology v1.0).