Other

Z.ai: GLM 5.3 FlashX

z-ai/glm-5.3-flashx

canonical: z-ai/glm-5.3-flashx-20260918

Audio inside a video clip

Cannot hear clip audioprobed 2026-10-22

Probed: missed a spoken codeword inside the clip. Any comment it makes on sound is invented.

What it answered

SHAPE: yellow square
AUDIO: NONE

Descriptionfrom OpenRouter

GLM-5.3-FlashX is the high-speed variant of Z.ai's GLM-5.3-Flash, a native multimodal model delivering inference speeds of up to 200 tokens/s. Built on the same hybrid sparse and linear attention architecture...

Context length

1,048,576 tok

Max completion

131,072 tok

Knowledge cutoff

—

Expires

—

Added to OpenRouter

9/18/2026

Cache last refreshed

11/12/2026

Primary modality

text+image+video->text

Source

OpenRouter

Input modalities

textimagevideo

Output modalities

text

Pricing

Field	Per token (USD)	Per million
prompt	0.00000037	$0.370
completion	0.00000125	$1.25
input_cache_read	0.000000075	$0.075

Supported parameters(16)

frequency_penaltyinclude_reasoningmax_tokenspresence_penaltyreasoningreasoning_effortrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_ktop_p

Default parameters

{
  "temperature": 1,
  "top_p": 0.95
}

OpenRouter page

Videos

29:00

Grok 4.7: improved, but GLM 5.3 FlashX beat it anyway (benchmark against Gemini, Sol, etc.)

Sep 22, 2026 · YouTube

Rounds

10 answersin this database. A round opens every model's answer to the same prompt.

Oct 17, 2026Vision & PerceptionCount the Park Catsin a video round answer
Sep 22, 2026CodingSpinning cat memein a video round answer
Sep 22, 2026Vision & PerceptionThe scroll testin a video round answer
Sep 22, 2026Vision & PerceptionCar Identificationin a video round answer
Sep 22, 2026KnowledgeName 100 Womenin a video round answer
Sep 22, 2026CodingDrop the slinkyin a video round answer
Sep 22, 2026CodingThe Cybertruck rallyin a video round answer
Sep 22, 2026CodingTwo kilobytesin a video round answer
Sep 22, 2026CodingEscalator Reversal Disasterin a video round answer
Sep 22, 2026CodingBird Breakdance Animationin a video round answer