#04Z.ai· released 2026-09-23

Z.ai: GLM 5.3 Prime.

GLM-5.3-Prime is the high-speed variant of Z.ai's GLM-5.3, inheriting its full capabilities while delivering 1.5–2× the output throughput through inference acceleration. It supports text input and output with a 1M-token...

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Context
1.0M
Input $/1M
$2.80
Output $/1M
$8.80
Modality
text
Arena Elo
1628
LMArena — human blind votes
AA Index
77.0
Artificial Analysis composite
LiveBench
85.9
Contamination-resistant
GPQA
89.9%
Grad-level science reasoning
MMLU-Pro
89.2%
Broad knowledge
SWE-bench
80.6%
Real GitHub bugs (Verified)
Terminal-Bench
66.7%
Agentic shell tasks
ARC-AGI
28.1%
Abstract reasoning
Aider Polyglot
84.1%
Multi-language code editing
Speed
96 tok/s
Median output speed

Profile

Z.ai: GLM 5.3 Prime is Z.ai's entry at position #4 on the current aggregated leaderboard. Its strongest signals are human preference voting, graduate-level science reasoning, real-world software engineering, and unattended agentic work. Every figure below is aggregated from the public sources listed on the homepage and refreshed on each pipeline run.

The score spread is comparatively complete for this model, but the standing advice still applies: treat gaps of a few points as ties and validate on your own workload before committing.

How this model's position is computed is documented in the methodology; what each benchmark actually measures is in the benchmark guide. See a figure that disagrees with its source? Report it — accepted corrections apply on the next refresh.

Nearby on the leaderboard