# Claude Opus 4.6 vs Gemini 2.5 Flash Preview 09 2025

As of Oct 15, 2026, Claude Opus 4.6 leads Gemini 2.5 Flash Preview 09 2025 in 4 of 4 shared categories: General LLM, Reasoning, Long context, and Factuality.

Claude Opus 4.6: $10 per 1M blended tokens.

Gemini 2.5 Flash Preview 09 2025: price per 1M tokens is unset in the catalog.

Claude Opus 4.6: closed weights.

Gemini 2.5 Flash Preview 09 2025: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Opus 4.6 leads Gemini 2.5 Flash Preview 09 2025 in General LLM at #4 against #145.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Opus 4.6 leads Gemini 2.5 Flash Preview 09 2025 in Reasoning at #2 against #146.
- Which to pick, Long context: As of Oct 15, 2026, Claude Opus 4.6 leads Gemini 2.5 Flash Preview 09 2025 in Long context at #2 against #139.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Opus 4.6 leads Gemini 2.5 Flash Preview 09 2025 in Factuality at #3 against #112.

As of Oct 15, 2026, Claude Opus 4.6 is near state of the art, rank #2 in Reasoning (since Oct 15, 2026; sources LMArena Text (style-controlled, hard prompts); methodology v1.0).

As of Oct 15, 2026, Gemini 2.5 Flash Preview 09 2025 is ranked #112 in Factuality (since Oct 15, 2026; sources LMArena Text factuality; methodology v1.0).