GLM-5.1

Z.ai (Zhipu AI) · Open weights · Released Apr 7, 2026 · $1.40 in · $4.40 out per 1M tokens

32Overall · rank 28

Score by job

Not enough data · 2 of 5 benchmarks

Benchmark	Result	Variant	z
SWE-bench Verified	74.2%	glm-5.1	-0.66
LMArena Coding	1486 rating	glm-5.1	-0.24

Not enough data · 1 of 4 benchmarks

Benchmark	Result	Variant	z
APEX-Agents	40.9%	glm-5.1	-1.09

24 · rank 32 · 2 of 4 benchmarks

Benchmark	Result	Variant	z
GPQA Diamond	89.9%	glm-5.1	-0.67
SimpleBench	55.1%	glm-5.1	-1.03

15 · rank 36 · 4 of 5 benchmarks

Benchmark	Result	Variant	z
FrontierMath Tiers 1–3	36.8%	glm-5.1	-2.15
OTIS Mock AIME	93.3%	glm-5.1	-0.55
ProofBench	22.2%	glm-5.1	-1.01
LMArena Math	1473 rating	glm-5.1	-0.26

57 · rank 26 · 2 of 2 benchmarks

Benchmark	Result	Variant	z
LMArena Creative Writing	1452 rating	glm-5.1	0.03
LMArena Instruction Following	1450 rating	glm-5.1	-0.53

30 · rank 33 · 1 of 1 benchmarks

Benchmark	Result	Variant	z
LMArena WebDev	1508 rating	glm-5.1	-0.49