#18Z.ai· released 2026-08-26

Z.ai: GLM 5.3 Flash.

GLM-5.3-Flash is a native multimodal model from Z.ai. It is suited for efficient coding and long-horizon agent tasks. Its hybrid sparse and linear attention architecture maintains accurate long-context behavior while...

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Context
1.3M
Input $/1M
$0.07
Output $/1M
$0.25
Modality
text · image · video
Arena Elo
1523
LMArena — human blind votes
AA Index
59.0
Artificial Analysis composite
LiveBench
75.4
Contamination-resistant
GPQA
81.4%
Grad-level science reasoning
MMLU-Pro
83.2%
Broad knowledge
SWE-bench
63.2%
Real GitHub bugs (Verified)
Terminal-Bench
48.7%
Agentic shell tasks
ARC-AGI
17.9%
Abstract reasoning
Aider Polyglot
74.2%
Multi-language code editing
Speed
191 tok/s
Median output speed

Profile

Z.ai: GLM 5.3 Flash is Z.ai's entry at position #18 on the current aggregated leaderboard. Its strongest signals are graduate-level science reasoning, real-world software engineering, unattended agentic work, and raw output speed. 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.

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