# DeepSeek V4 Flash High Preview vs O3 Mini

As of Oct 14, 2026, DeepSeek V4 Flash High Preview leads O3 Mini in 2 of 3 shared categories: Reasoning and Long context.

DeepSeek V4 Flash High Preview: price per 1M tokens is unset in the catalog.

O3 Mini: $1.9250000000000003 per 1M blended tokens.

DeepSeek V4 Flash High Preview: open weights.

O3 Mini: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, O3 Mini leads DeepSeek V4 Flash High Preview in General LLM at #7 against #71.
- Which to pick, Reasoning: As of Oct 14, 2026, DeepSeek V4 Flash High Preview leads O3 Mini in Reasoning at #74 against #133.
- Which to pick, Long context: As of Oct 14, 2026, DeepSeek V4 Flash High Preview leads O3 Mini in Long context at #68 against #145.

As of Oct 14, 2026, DeepSeek V4 Flash High Preview is ranked #65 in Coding › Web dev (since Oct 14, 2026; sources LMArena WebDev; methodology v1.0).

As of Oct 14, 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).