GLM-5.3 Flash is Z.AI's natively multimodal 320B MoE reasoning model with 18B active parameters, served by Phala inside a Trusted Execution Environment with Redpill attestation and signed completion receipts.
Added Aug 28, 2026
Model weightsContext Window
1.0M
Max Output
131.1K
Input Price (Auto)
$0.15/1M
Output Price (Auto)
$0.50/1M
Cache Read (Auto)
$0.030/1M
Capabilities
Benchmarks
Benchmarks
Performance metrics and benchmarks
Sourced from LMArena.
Arena Score
1469.4
Overall Rank
#38 / 395
Votes
2,424
Confidence Interval
1457.4 - 1481.4
Category Scores
Coding
#11 / 390
663 votes
1530.6
Longer Query
#45 / 373
1,135 votes
1474.2
Creative Writing
#58 / 393
541 votes
1433.3
Instruction Following
#31 / 395
860 votes
1465.1
Hard Prompts
#30 / 395
1,607 votes
1495.0
Additional Categories13
Expert
#15 / 345
238 votes
1514.2
Hard Prompts English
#30 / 393
577 votes
1497.7
Non English
#34 / 395
1,521 votes
1459.4
Industry Software And It Services
#35 / 395
935 votes
1503.4
Exclude Ties
#38 / 395
1,771 votes
1474.1
Russian
#43 / 359
282 votes
1466.4
English
#45 / 395
903 votes
1471.8
Industry Entertainment And Sports And Media
#46 / 393
614 votes
1436.8
Industry Writing And Literature And Language
#57 / 394
660 votes
1443.4
Industry Business And Management And Financial Operations
#69 / 388
436 votes
1446.7
Multi Turn
#71 / 393
356 votes
1452.8
Industry Life And Physical And Social Science
#74 / 393
408 votes
1461.5
Industry Legal And Government
#76 / 368
229 votes
1455.6
Published 2026-08-27 · Matched as glm-5.3-flash
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