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
Avg output tokens (7d)
1.4K tokens
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
46.2
Coding Index
71.5
Agentic Index
51.5
Reasoning
GPQA Diamond
Graduate-level scientific reasoning
91.2%
Better than 92% of models compared
HLE
Humanity's Last Exam
39.9%
Better than 91% of models compared
AA-LCR
Long context reasoning evaluation
80.0%
Better than 89% of models compared
GDPval-AA
Economically valuable tasks
58.7%
CritPt
Research-level physics reasoning
15.4%
Coding
SciCode
Python programming for scientific computing
51.6%
Better than 58% 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 Sep 7, 2026
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