# Claude Opus 4.8 vs GLM 5.3 Flash

As of Oct 15, 2026, Claude Opus 4.8 leads GLM 5.3 Flash in 7 of 10 shared categories: General LLM, Reasoning, Science, Long context, Vision, Factuality, and Abstraction (ARC).

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

GLM 5.3 Flash: $0.2375 per 1M blended tokens.

Claude Opus 4.8: closed weights.

GLM 5.3 Flash: open weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Opus 4.8 leads GLM 5.3 Flash in General LLM at #21 against #34.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Opus 4.8 leads GLM 5.3 Flash in Reasoning at #10 against #27.
- Which to pick, Science: As of Oct 15, 2026, Claude Opus 4.8 leads GLM 5.3 Flash in Science at #27 against #34.
- Which to pick, Coding: As of Oct 15, 2026, GLM 5.3 Flash leads Claude Opus 4.8 in Coding at #10 against #12.
- Which to pick, Coding › Agentic: As of Oct 15, 2026, GLM 5.3 Flash leads Claude Opus 4.8 in Coding › Agentic at #10 against #12.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, GLM 5.3 Flash leads Claude Opus 4.8 in Coding › Web dev at #24 against #35.
- Which to pick, Long context: As of Oct 15, 2026, Claude Opus 4.8 leads GLM 5.3 Flash in Long context at #10 against #35.
- Which to pick, Vision: As of Oct 15, 2026, Claude Opus 4.8 leads GLM 5.3 Flash in Vision at #13 against #29.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Opus 4.8 leads GLM 5.3 Flash in Factuality at #24 against #34.
- Which to pick, Abstraction (ARC): As of Oct 15, 2026, Claude Opus 4.8 leads GLM 5.3 Flash in Abstraction (ARC) at #12 against #14.

As of Oct 15, 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 15, 2026, GLM 5.3 Flash is state of the art on best per dollar in Coding (since Oct 14, 2026; sources Terminal-Bench 4.0; methodology v1.0).