# Gemini 2.5 Flash Preview 09 2025 vs Gemini 3.8 Flash

As of Oct 15, 2026, Gemini 2.5 Flash Preview 09 2025 leads Gemini 3.8 Flash in 0 of 4 shared categories.

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

Gemini 3.8 Flash: $1.5 per 1M blended tokens.

Gemini 2.5 Flash Preview 09 2025: closed weights.

Gemini 3.8 Flash: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Gemini 3.8 Flash leads Gemini 2.5 Flash Preview 09 2025 in General LLM at #7 against #145.
- Which to pick, Reasoning: As of Oct 15, 2026, Gemini 3.8 Flash leads Gemini 2.5 Flash Preview 09 2025 in Reasoning at #6 against #146.
- Which to pick, Long context: As of Oct 15, 2026, Gemini 3.8 Flash leads Gemini 2.5 Flash Preview 09 2025 in Long context at #5 against #139.
- Which to pick, Factuality: As of Oct 15, 2026, Gemini 3.8 Flash leads Gemini 2.5 Flash Preview 09 2025 in Factuality at #19 against #112.

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).

As of Oct 15, 2026, Gemini 3.8 Flash is state of the art on best per dollar in General LLM (since Oct 14, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).