Other

Z.ai: GLM 5.3

z-ai/glm-5.3

canonical: z-ai/glm-5.3-20260816

Descriptionfrom OpenRouter

GLM-5.3 is a large-scale reasoning model from Z.ai, built for complex software engineering and long-horizon agent tasks. It supports text input and output with a 1M-token context window, and improves...

Context length

1,048,576 tok

Max completion

943,718 tok

Knowledge cutoff

—

Expires

—

Added to OpenRouter

8/18/2026

Cache last refreshed

11/12/2026

Primary modality

text->text

Source

OpenRouter

Input modalities

text

Output modalities

text

Pricing

Field	Per token (USD)	Per million
prompt	0.0000000699	$0.070
completion	0.0000014	$1.40
input_cache_read	0.0000000689	$0.069

Supported parameters(21)

frequency_penaltyinclude_reasoninglogit_biaslogprobsmax_tokensmin_pparallel_tool_callspresence_penaltyreasoningreasoning_effortrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_ktop_logprobstop_p