# DeepSeek V4 Flash vs O3 Mini

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

DeepSeek V4 Flash: $0.11374999999999999 per 1M blended tokens.

O3 Mini: $1.9250000000000003 per 1M blended tokens.

DeepSeek V4 Flash: open weights.

O3 Mini: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, O3 Mini leads DeepSeek V4 Flash in General LLM at #7 against #75.
- Which to pick, Reasoning: As of Oct 14, 2026, DeepSeek V4 Flash leads O3 Mini in Reasoning at #72 against #133.
- Which to pick, Long context: As of Oct 14, 2026, DeepSeek V4 Flash leads O3 Mini in Long context at #69 against #145.

As of Oct 14, 2026, DeepSeek V4 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).

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).