How much does Z.ai: GLM 5.3 cost per 1M tokens?

Z.ai: GLM 5.3 costs $1.40 per 1M input tokens and $4.40 per 1M output tokens on the standard tier. Cached input is $0.260 per 1M.

What is Z.ai: GLM 5.3's context window?

Z.ai: GLM 5.3 accepts up to 1,310,720 tokens in a single request, and can return up to 943,717 output tokens.

Is there a cheaper OpenRouter model than Z.ai: GLM 5.3?

Yes. OpenAI: GPT-3.5 Turbo is $0.500 per 1M input tokens versus $1.40 for Z.ai: GLM 5.3, with a 16,385 token context window.

Where does this Z.ai: GLM 5.3 price come from?

From the OpenRouter catalogue, because OpenRouter does not publish machine-readable pricing. OpenRouter is a reseller, so its rate can differ from OpenRouter's own — verify before committing spend.

Z.ai: GLM 5.3 pricing

GLM-5.3 is a large-scale reasoning model from Z.ai, built for complex software engineering and long-horizon agent tasks. Z.ai: GLM 5.3 from OpenRouter costs $1.40 per 1M input tokens and $4.40 per 1M output tokens. Cached input is $0.260 per 1M. Context window 1,310,720 tokens.

API id z-ai/glm-5.3 · OpenRouter · source · updated 2026-09-25 · general-purpose

$1.40

Input / 1M tokens

$4.40

Output / 1M tokens

$0.260

Cached input / 1M

1.3M

Context window

Z.ai: GLM 5.3 specifications

Provider: OpenRouter
API id: z-ai/glm-5.3
Model type: general-purpose
Context window: 1.3M tokens
Max output: 944K tokens
Currency: USD
Price source: Provider API
Last checked: 2026-09-25

GLM-5.3 across providers

The same model, priced by every seller we track. Ranked by the cost of 1M input + 1M output tokens, standard tier; savings measured against buying from the vendor directly.

Provider	Input /1M	Cached /1M	Output /1M	1M in + 1M out	vs vendor
Zhipu AI (GLM)VendorCheapest	$1.40	$0.260	$4.40	$5.80	—
OpenRouterHostviewing	$1.40	$0.260	$4.40	$5.80	—
Together AIHost	$1.40	$0.260	$4.40	$5.80	—

What Z.ai: GLM 5.3 costs in practice

Estimated cost at common usage volumes
Workload	Input tokens	Output tokens	Estimated cost
Short chat turn	1,000	500	$0.0036
Document summary	50,000	2,000	$0.08
1M tokens in, 200K out	1,000,000	200,000	$2.28

Estimates use the standard tier and ignore caching discounts, so real bills with repeated prompt prefixes are typically lower.

Z.ai: GLM 5.3 price history

Recorded	Input /1M	Output /1M
2026-09-25	$1.40	$4.40
2026-09-22	$0.840	$2.64
2026-09-21	$0.910	$2.86
2026-09-20	$0.896	$2.82
2026-09-19	$0.910	$2.86
2026-09-14	$1.40	$4.40
2026-09-13	$1.09	$3.43
2026-09-07	$1.40	$4.40
2026-09-04	$1.40	$4.40
2026-08-27	$1.40	$4.40

Common questions

How much does Z.ai: GLM 5.3 cost per 1M tokens?: Z.ai: GLM 5.3 costs $1.40 per 1M input tokens and $4.40 per 1M output tokens on the standard tier. Cached input is $0.260 per 1M.
What is Z.ai: GLM 5.3's context window?: Z.ai: GLM 5.3 accepts up to 1,310,720 tokens in a single request, and can return up to 943,717 output tokens.
Is there a cheaper OpenRouter model than Z.ai: GLM 5.3?: Yes. OpenAI: GPT-3.5 Turbo is $0.500 per 1M input tokens versus $1.40 for Z.ai: GLM 5.3, with a 16,385 token context window.
Where does this Z.ai: GLM 5.3 price come from?: From the OpenRouter catalogue, because OpenRouter does not publish machine-readable pricing. OpenRouter is a reseller, so its rate can differ from OpenRouter's own — verify before committing spend.

Head-to-head comparisons

Compare Z.ai: GLM 5.3 with another model →

Other OpenRouter models

See all OpenRouter pricing →