Best Z.ai Reasoning Models

Match · Updated July 2026

The best Z.ai model for reasoning is GLM 5.2 — 51.1 intelligence with extended step-by-step thinking. GLM 5.1 (40.2) and GLM 5 (39.5) round out the top three.

51.1Intelligence

$0.966Input /M

1.0MContext

Large language models with extended reasoning / thinking, ranked by intelligence. The smartest AI models for complex multi-step reasoning, math and analysis.

Frequently asked

What is the best Z.ai model for reasoning?

The best Z.ai model for reasoning is GLM 5.2 — 51.1 intelligence with extended step-by-step thinking. GLM 5.1 (40.2) and GLM 5 (39.5) round out the top three.

What's a good alternative to GLM 5.2?

GLM 5.1 (40.2) is the closest alternative on this metric, followed by GLM 5 (39.5). See the full ranking above for the tradeoffs.

How many Z.ai models are there?

modelgrep tracks 12 Z.ai models with live benchmarks, speed, latency and per-provider pricing, led on intelligence by GLM 5.2. 12 of them qualify for this ranking.

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All rankings

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