Name: GLM vs Claude benchmark (2026)
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

Question 1

Which is better overall, GLM-5.3 or Claude Opus 5?

Accepted Answer

Claude Opus 5 has the higher preference Elo in our latest snapshot (1,624). “Better” still depends on coding, price, and latency — see the table.

Question 2

Which is better at coding, GLM-5.3 or Claude Opus 5?

Accepted Answer

Claude Opus 5 leads SWE-bench at 79.2% vs 76.4%. SWE-bench is one harness, not your repo.

Question 3

Which is cheaper to run in production?

Accepted Answer

GLM-5.3 output tokens are $1.8/1M versus $50/1M. Input prices and retry rates still move the real bill.

Question 4

Which is faster, GLM-5.3 or Claude Opus 5?

Accepted Answer

GLM-5.3 has the lower time-to-first-token (255 ms vs 310 ms). Tokens/sec is a separate column if you care about long completions.

Question 5

Which has the larger context window?

Accepted Answer

Claude Opus 5 accepts 1M tokens versus 200k.

Question 6

Can I self-host either model?

Accepted Answer

Neither model is marked open-weights here. You are comparing hosted APIs.

Question 7

Are these scores from CompareLLM’s own evals?

Accepted Answer

No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.

Question 8

What does preference Elo mean on this page?

Accepted Answer

Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. GLM-5.3 and Claude Opus 5 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Workload	Pick	Why
Repo / coding agents	Claude Opus 5	Higher SWE-bench (79.2%).
High-volume chat	GLM-5.3	Lower output list price ($1.8/1M).
Voice / low-latency UI	GLM-5.3	Lower TTFT (255 ms).
Long-document RAG	Claude Opus 5	Larger window (1M).
Screenshots / vision	Claude Opus 5	Both accept images. Defaulting to the higher-Elo side (Claude Opus 5).

Workload	Pick	Why
Repo / coding agents	Claude Opus 5	Higher SWE-bench (79.2%).
High-volume chat	GLM-5.3	Lower output list price ($1.8/1M).
Voice / low-latency UI	GLM-5.3	Lower TTFT (255 ms).
Long-document RAG	Claude Opus 5	Larger window (1M).
Screenshots / vision	Claude Opus 5	Both accept images. Defaulting to the higher-Elo side (Claude Opus 5).

GLM vs Claude benchmark (2026)

GLM-5.3

Claude Opus 5

Which brand for which job

Frequently asked questions

GLM vs Claude benchmark (2026)

GLM-5.3

Claude Opus 5

Which brand for which job

Frequently asked questions