Claude Opus 5.5 (Max, Default Fallback) vs GLM-5.3 (Max)

Claude Opus 5.5 (Max, Default Fallback) scores 59.1 on the Artificial Analysis Intelligence Index, against 31.7 for GLM-5.3 (Max). GLM-5.3 (Max) costs $2.15 per million tokens (3:1 blend), against $8 for Claude Opus 5.5 (Max, Default Fallback). Claude Opus 5.5 (Max, Default Fallback) generates 95 t/s, against 82.8 t/s for GLM-5.3 (Max). Both accept a context of 1M tokens.

Comparison generated from the catalogue data. Add or remove models below to refine it.

2 models compared

✓ Best published value among measured models. — Data unavailable. These metrics do not establish an overall ranking.

Intelligence

Claude Opus 5.5 (Max, Default Fallback)
Best: 59.1
GLM-5.3 (Max)
31.7

Coding

Claude Opus 5.5 (Max, Default Fallback)
—
GLM-5.3 (Max)
74.8

Agentic

Claude Opus 5.5 (Max, Default Fallback)
—
GLM-5.3 (Max)
53.1

Cyber Index

Claude Opus 5.5 (Max, Default Fallback)
28.7%
GLM-5.3 (Max)
Best: 36.4%

Speed

Claude Opus 5.5 (Max, Default Fallback)
Best: 95 t/s
GLM-5.3 (Max)
82.8 t/s

TTFT

Claude Opus 5.5 (Max, Default Fallback)
643 s
GLM-5.3 (Max)
Best: 1.75 s

Input · $ / 1M tokens

Claude Opus 5.5 (Max, Default Fallback)
$4×2.9 relative to the lowest price among the compared models
GLM-5.3 (Max)
Best: $1.40

Output · $ / 1M tokens

Claude Opus 5.5 (Max, Default Fallback)
$20×4.5 relative to the lowest price among the compared models
GLM-5.3 (Max)
Best: $4.40

Context window

Claude Opus 5.5 (Max, Default Fallback)
1M
GLM-5.3 (Max)
1M

Reasoning

Claude Opus 5.5 (Max, Default Fallback)
Yes
GLM-5.3 (Max)
Yes

Open weights

Claude Opus 5.5 (Max, Default Fallback)
Yes
GLM-5.3 (Max)
Yes

Cost / task

Claude Opus 5.5 (Max, Default Fallback)
$10.04×2 relative to the lowest price among the compared models
GLM-5.3 (Max)
Best: $5.01

Each reasoning level remains a separate configuration.

Score and cost

Each line joins the reasoning levels of a compared model; the large point marks the configuration in the table. The top-right corner holds the best score for the lowest cost. Select another point to compare that level.

Intelligence Indexmost efficient ↗Cost per task
  • Claude Opus 5.5 (Max, Default Fallback)59.1 · $10.04
  • GLM-5.3 (Max)31.7 · $5.01

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