How much does GLM 5.3 cost on Zeplik?

Input tokens cost 15.4 credits per million and output tokens 48.4 credits per million (1 credit = $0.10; the raw provider rates are $1.40 and $4.40 per million). New accounts start with free credits.

How long can a conversation with GLM 5.3 be?

GLM 5.3 has a 1.0M-token context window (1,048,576 tokens), which covers the conversation plus any documents you attach.

Does GLM 5.3 support images and tools?

GLM 5.3 is text-only and supports tool calling.

GLM 5.3

Open weightTools

Z.ai · Released August 2026

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...

It is part of Z.ai's GLM series, an open-weight line where the 5.x generation leads, Turbo servings cut latency and cost, and 5V adds vision.

Facts and pricing

Provider: Z.ai
Context window: 1.0M tokens
Input price: 15.4 credits / 1M tokens ($1.40 raw)
Output price: 48.4 credits / 1M tokens ($4.40 raw)
Vision (image input): No
Tool calling: Yes
Extended reasoning: No

Credits are what Zeplik bills: 1 credit = $0.10, computed from the raw provider rate with a 1.10x margin. Raw prices shown per 1M tokens.

Try GLM 5.3 now

Or open Zeplik with GLM 5.3 already selected

What GLM 5.3 is best for

Everyday chat and drafting on an open-weight model with transparent lineage
Very long documents and codebases: a 1.0M-token window fits entire books or repositories in one conversation
Tool use and agents: reliably calls functions, so it can search, run skills and drive workflows

Example prompts

Prompts that suit a open weight model like GLM 5.3:

Draft a project update from these rough notes
Explain how HTTPS works to a curious teenager
Turn this list of features into a changelog entry
Brainstorm objections to this proposal and how to answer them

Z.ai family

Model	Context	Input cr/M	Output cr/M	Released
GLM 5.3 Flash (batch)	1.0M	1.7	5.5	August 2026
GLM 5.3 Flash	1.0M	0.83	2.8	August 2026
GLM 5.3	1.0M	15.4	48.4	August 2026
GLM 5.2	1.0M	10.6	33.4	June 2026
GLM 5.2 (free)	256K	0	0	June 2026
GLM 5.1	200K	10.6	33.4	April 2026
GLM 5V Turbo	203K	13.2	44.0	April 2026
GLM 5 Turbo	203K	13.2	44.0	March 2026
GLM 5	198K	6.6	21.1	February 2026
GLM 4.7 Flash	203K	0.66	4.4	January 2026

All 16 Z.ai models

Frequently asked questions

What is GLM 5.3?: GLM 5.3 is an AI model by Z.ai. 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...
How much does GLM 5.3 cost on Zeplik?: Input tokens cost 15.4 credits per million and output tokens 48.4 credits per million (1 credit = $0.10; the raw provider rates are $1.40 and $4.40 per million). New accounts start with free credits.
How long can a conversation with GLM 5.3 be?: GLM 5.3 has a 1.0M-token context window (1,048,576 tokens), which covers the conversation plus any documents you attach.
Does GLM 5.3 support images and tools?: GLM 5.3 is text-only and supports tool calling.

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