ox-alpha out of stealth! GLM-5.3 Flash is Z.ai's first natively multimodal GLM-5 model, with 320B total parameters and just 18B active parameters for efficient coding, agentic work, and precise 1M-token context. Its hybrid sparse-and-linear attention architecture helps it outperform GLM-5.2 at one-tenth the price while approaching Claude Opus 4.8 on coding and agentic benchmarks.
Added Aug 26, 2026
Model weightsContext Window
1.0M
Max Output
131.1K
Input Price (Auto)
$0.075/1M
Output Price (Auto)
$0.25/1M
Cache Read (Auto)
$0.015/1M
Capabilities
Benchmarks
Benchmarks
Performance metrics and benchmarks
Sourced from Artificial Analysis.
Intelligence Index
57.5
Coding Index
71.5
Agentic Index
58.2
Reasoning
GPQA Diamond
Graduate-level scientific reasoning
91.2%
Better than 95% of models compared
HLE
Humanity's Last Exam
39.9%
Better than 93% of models compared
AA-LCR
Long context reasoning evaluation
78.0%
Better than 96% of models compared
GDPval-AA
Economically valuable tasks
63.2%
CritPt
Research-level physics reasoning
15.4%
Coding
SciCode
Python programming for scientific computing
46.1%
Better than 85% of models compared
Knowledge
AA-Omniscience Accuracy
Proportion of correctly answered questions
27.5%
AA-Omniscience Hallucination Rate
Rate of incorrect answers among non-correct responses
27.6%
Last updated Aug 28, 2026, 12:00 PM
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