# Claude Opus 5 vs Grok 4.5

As of Oct 15, 2026, Claude Opus 5 leads Grok 4.5 in 10 of 10 shared categories: General LLM, Reasoning, Science, Coding, Coding › Agentic, Coding › Web dev, Long context, Vision, Factuality, and Abstraction (ARC).

Claude Opus 5: $10 per 1M blended tokens.

Grok 4.5: $3 per 1M blended tokens.

Claude Opus 5: closed weights.

Grok 4.5: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Opus 5 leads Grok 4.5 in General LLM at #11 against #36.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Opus 5 leads Grok 4.5 in Reasoning at #9 against #37.
- Which to pick, Science: As of Oct 15, 2026, Claude Opus 5 leads Grok 4.5 in Science at #12 against #14.
- Which to pick, Coding: As of Oct 15, 2026, Claude Opus 5 leads Grok 4.5 in Coding at #4 against #19.
- Which to pick, Coding › Agentic: As of Oct 15, 2026, Claude Opus 5 leads Grok 4.5 in Coding › Agentic at #4 against #19.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Opus 5 leads Grok 4.5 in Coding › Web dev at #6 against #34.
- Which to pick, Long context: As of Oct 15, 2026, Claude Opus 5 leads Grok 4.5 in Long context at #9 against #35.
- Which to pick, Vision: As of Oct 15, 2026, Claude Opus 5 leads Grok 4.5 in Vision at #12 against #29.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Opus 5 leads Grok 4.5 in Factuality at #4 against #26.
- Which to pick, Abstraction (ARC): As of Oct 15, 2026, Claude Opus 5 leads Grok 4.5 in Abstraction (ARC) at #3 against #21.

As of Oct 15, 2026, Claude Opus 5 is near state of the art, rank #4 in Factuality (since Oct 15, 2026; sources LMArena Text factuality; methodology v1.0).

As of Oct 15, 2026, Grok 4.5 is ranked #14 in Science (since Oct 15, 2026; sources GPQA Diamond; methodology v1.0).