# GPT-5.5 vs Kimi K2 Thinking Turbo

As of Oct 14, 2026, GPT-5.5 leads Kimi K2 Thinking Turbo in 6 of 6 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, and Factuality.

GPT-5.5: $11.25 per 1M blended tokens.

Kimi K2 Thinking Turbo: price per 1M tokens is unset in the catalog.

GPT-5.5: closed weights.

Kimi K2 Thinking Turbo: open weights.

- Which to pick, General LLM: As of Oct 14, 2026, GPT-5.5 leads Kimi K2 Thinking Turbo in General LLM at #21 against #81.
- Which to pick, Reasoning: As of Oct 14, 2026, GPT-5.5 leads Kimi K2 Thinking Turbo in Reasoning at #25 against #77.
- Which to pick, Science: As of Oct 14, 2026, GPT-5.5 leads Kimi K2 Thinking Turbo in Science at #30 against #60.
- Which to pick, Coding › Web dev: As of Oct 14, 2026, GPT-5.5 leads Kimi K2 Thinking Turbo in Coding › Web dev at #44 against #94.
- Which to pick, Long context: As of Oct 14, 2026, GPT-5.5 leads Kimi K2 Thinking Turbo in Long context at #23 against #87.
- Which to pick, Factuality: As of Oct 14, 2026, GPT-5.5 leads Kimi K2 Thinking Turbo in Factuality at #5 against #90.

As of Oct 14, 2026, GPT-5.5 is a former state-of-the-art holder in General LLM (since Apr 28, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).

As of Oct 14, 2026, Kimi K2 Thinking Turbo is a former state-of-the-art holder in Coding › Web dev (since Nov 17, 2025; sources LMArena WebDev; methodology v1.0).