# Claude Sonnet 5 vs GLM 5.3 Flash

As of Oct 15, 2026, Claude Sonnet 5 leads GLM 5.3 Flash in 1 of 8 shared categories: Science.

Claude Sonnet 5: $4.000000000000001 per 1M blended tokens.

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

Claude Sonnet 5: closed weights.

GLM 5.3 Flash: open weights.

- Which to pick, General LLM: As of Oct 15, 2026, GLM 5.3 Flash leads Claude Sonnet 5 in General LLM at #34 against #50.
- Which to pick, Reasoning: As of Oct 15, 2026, GLM 5.3 Flash leads Claude Sonnet 5 in Reasoning at #27 against #40.
- Which to pick, Science: As of Oct 15, 2026, Claude Sonnet 5 leads GLM 5.3 Flash in Science at #32 against #34.
- Which to pick, Coding: As of Oct 15, 2026, GLM 5.3 Flash leads Claude Sonnet 5 in Coding at #10 against #19.
- Which to pick, Coding › Agentic: As of Oct 15, 2026, GLM 5.3 Flash leads Claude Sonnet 5 in Coding › Agentic at #10 against #19.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, GLM 5.3 Flash leads Claude Sonnet 5 in Coding › Web dev at #24 against #40.
- Which to pick, Long context: As of Oct 15, 2026, GLM 5.3 Flash leads Claude Sonnet 5 in Long context at #35 against #36.
- Which to pick, Factuality: As of Oct 15, 2026, GLM 5.3 Flash leads Claude Sonnet 5 in Factuality at #34 against #56.

As of Oct 15, 2026, Claude Sonnet 5 is ranked #19 in Coding (since Oct 15, 2026; sources Terminal-Bench 4.0; 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).