# Claude Opus 4.8 vs DeepSeek V3.1 Terminus

As of Oct 14, 2026, Claude Opus 4.8 leads DeepSeek V3.1 Terminus in 3 of 3 shared categories: General LLM, Reasoning, and Long context.

Claude Opus 4.8: $10 per 1M blended tokens.

DeepSeek V3.1 Terminus: $0.4525 per 1M blended tokens.

Claude Opus 4.8: closed weights.

DeepSeek V3.1 Terminus: open weights.

- Which to pick, General LLM: As of Oct 14, 2026, Claude Opus 4.8 leads DeepSeek V3.1 Terminus in General LLM at #20 against #99.
- Which to pick, Reasoning: As of Oct 14, 2026, Claude Opus 4.8 leads DeepSeek V3.1 Terminus in Reasoning at #10 against #108.
- Which to pick, Long context: As of Oct 14, 2026, Claude Opus 4.8 leads DeepSeek V3.1 Terminus in Long context at #10 against #100.

As of Oct 14, 2026, Claude Opus 4.8 is a former state-of-the-art holder in Coding › Web dev (since Jun 5, 2026; sources LMArena WebDev; methodology v1.0).

As of Oct 14, 2026, DeepSeek V3.1 Terminus is ranked #99 in General LLM (since Oct 14, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).