# Claude Opus 4.5 20251101 vs DeepSeek V4.1 Flash

As of Oct 14, 2026, Claude Opus 4.5 20251101 leads DeepSeek V4.1 Flash in 0 of 2 shared categories.

Claude Opus 4.5 20251101: price per 1M tokens is unset in the catalog.

DeepSeek V4.1 Flash: $0.23463 per 1M blended tokens.

Claude Opus 4.5 20251101: closed weights.

DeepSeek V4.1 Flash: open weights.

- Which to pick, Science: As of Oct 14, 2026, DeepSeek V4.1 Flash leads Claude Opus 4.5 20251101 in Science at #36 against #55.
- Which to pick, Abstraction (ARC): As of Oct 14, 2026, DeepSeek V4.1 Flash leads Claude Opus 4.5 20251101 in Abstraction (ARC) at #8 against #27.

As of Oct 14, 2026, Claude Opus 4.5 20251101 is ranked #27 in Abstraction (ARC) (since Oct 14, 2026; sources ARC-AGI; methodology v1.0).

As of Oct 14, 2026, DeepSeek V4.1 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).