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Zhipu AI (Z.ai)GLM-4 familyLegacyMultimodal modelReleased Dec 2025

GLM-4.6V

Open-weight (MIT) vision-language GLM; cheapest/free Z.ai vision option via GLM-4.6V-Flash.

Model idglm-4.6v

Price$0.30 in, $0.90 out per 1M tokens

No published training cutoff

At least1,962events since its release in December 2025

85 historic, 449 major. 317 days of news.

Zhipu AI (Z.ai) doesn’t publish a training cutoff, so we count from its release date. The real gap is larger.

How to call it

5 ways to use GLM-4.6V, with the model id each provider expects.

Providers, model ids, endpoints and docs for GLM-4.6V
ProviderModel idEndpointDocs
Z.ai API glm-4.6v https://api.z.ai/api/paas/v4 docs.z.ai
OpenRouter z-ai/glm-4.6v openrouter.ai
Hugging Face huggingface.co
Hugging Face (Flash) huggingface.co
Web app chat.z.ai

Pricing

Prices for GLM-4.6V
Input$0.30 per 1M tokens
Output$0.90 per 1M tokens
Cache read$0.05 per 1M tokens

As published: “per 1M tokens (USD); GLM-4.6V-FlashX 0.04/0.4; GLM-4.6V-Flash free”.

Source: docs.z.ai.

Specs

Input
Text, images and video
Output
Text
Context window
128,000 tokens
Max output
Not published
Open weights
Yes
Licence
MIT
Training cutoff
Not published
Released
December 2025
Status
Legacy
Type
Multimodal model

What stands out

What its maker marketed at launch, and what people found later, each with its source.

  • Native multimodal function calling

    First GLM vision model with native function calling (images can be passed to and returned from tools).

    Source: huggingface.co

  • Interleaved image-text generation

    Builds mixed image-text content from documents and tool-retrieved images; also frontend replication from screenshots.

    Source: huggingface.co

Notes

Still sold on Z.ai (with FlashX and free Flash variants) but superseded by the natively multimodal GLM-5.3-Flash. Model id casing on Z.ai assumed lowercase glm-4.6v (listed as GLM-4.6V).

Sources: https://huggingface.co/zai-org/GLM-4.6V · https://docs.z.ai/guides/overview/pricing

Not yet checked against an official source: Release day not verified (HF 2025-12-07).