Z.aiopen weightsCurrentReasoning

GLM-5.3

Name: GLM-5.3
Author: Z.ai

Weights released Aug 28, 2026.

Released

Aug 14, 2026

Price in / out

$1.4 / $4.4

Blended $/1M

$2.15

Context

Parameters: 753B. License: GLM-5.3 License.

Benchmark scoresvs GLM-5.2

Benchmark	Score	Δ vs prior	Rank (current)	Configuration	Source
Terminal-Bench 2.1	71.5%	+3.7	#12 of 22	leaderboard	benchlm.ai ↗
GPQA Diamond	88.1%	-3.1	#14 of 21	Vals AI run, max reasoning · independent run	vals.ai ↗
Humanity's Last Exam	42.3%	-12.4	#17 of 31	Artificial Analysis run, no tools (2,158 text-only questions), max effort; Z.ai reports 62.5 with tools · independent run	artificialanalysis.ai ↗
MMLU-Pro	86.8%	—	#6 of 12	Vals AI run, max reasoning · independent run	vals.ai ↗
LMArena Text	1475	—	#4 of 4	max · leaderboard	benchlm.ai ↗

Version

$ in / out

Terminal-Bench

SWE-bench

GPQA

HLE

AIME

τ²-bench

GLM-4.6Superseded

—

76.9%

GLM-4.7Superseded

—

73.8%

—

24.8%

—

95.9%

GLM-5Superseded

—

77.8%

86%

50.4%

95.8%

98.2%

GLM-5.1Superseded

—

56.9%

—

86.2%

52.3%

95.3%

97.7%

GLM-5.2Superseded

$1.4 / $4.4

67.8%

—

91.2%

54.7%

99.2%

99.1%

GLM-5.3

$1.4 / $4.4

71.5%

—

88.1%

42.3%

—

GLM-5.3 Flash

—

62.9%

—

86.4%

39.9%

—

GLM-5.3

Benchmark scoresvs GLM-5.2

GLM versions

Compare

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Current open-weight peers

Version	Released	$ in / out	Terminal-Bench	SWE-bench	GPQA	HLE	AIME	τ²-bench
GLM-4.6Superseded	2025-09-30	—	—	—	—	—	—	76.9%
GLM-4.7Superseded	2025-12-22	—	—	73.8%	—	24.8%	—	95.9%
GLM-5Superseded	2026-02-11	—	—	77.8%	86%	50.4%	95.8%	98.2%
GLM-5.1Superseded	2026-04-15	—	56.9%	—	86.2%	52.3%	95.3%	97.7%
GLM-5.2Superseded	2026-06-17	$1.4 / $4.4	67.8%	—	91.2%	54.7%	99.2%	99.1%
GLM-5.3	2026-08-14	$1.4 / $4.4	71.5%	—	88.1%	42.3%	—	—
GLM-5.3 Flash	2026-08-26	—	62.9%	—	86.4%	39.9%	—	—