Question 1

What does this Gemini 1.5 Pro vs zai-org/GLM-5.2 comparison cover?

Accepted Answer

It brings together documented inputs and outputs, token limits, deployment terms and available pricing. When both models have source-linked, verified results on a shared benchmark, those results are shown with their individual sources. The comparison is a starting point for evaluating your own workload.

Question 2

Which is cheaper: Gemini 1.5 Pro or zai-org/GLM-5.2?

Accepted Answer

The available pricing does not establish a comparable input and output token rate for both models. Check the billing unit and selected host in each profile. Images, speech, video and local inference can have different cost structures.

Question 3

Which has the larger context window: Gemini 1.5 Pro or zai-org/GLM-5.2?

Accepted Answer

Gemini 1.5 Pro lists 2M tokens and zai-org/GLM-5.2 lists 1M. Gemini 1.5 Pro therefore has the larger recorded context window, but capacity alone is not a quality score.

Question 4

Which is faster: Gemini 1.5 Pro or zai-org/GLM-5.2?

Accepted Answer

There is no matched speed measurement for both models with the same source, host, region and date. Test the same prompts at your expected concurrency and measure time to the first useful response as well as complete task time.

Question 5

What input and output types do Gemini 1.5 Pro and zai-org/GLM-5.2 support?

Accepted Answer

Gemini 1.5 Pro records text, image, audio, video input and text output. zai-org/GLM-5.2 records text input and text output. “Not documented” means the current source record is incomplete; it does not prove that a modality is unsupported.

Question 6

Should I choose Gemini 1.5 Pro or zai-org/GLM-5.2?

Accepted Answer

Consider Gemini 1.5 Pro if you need larger context. Consider zai-org/GLM-5.2 if you need larger maximum output. Test both on the same representative examples and judge the output against your acceptance criteria. Include tool failures, retries and the time to a completed task.

Specification	Gemini 1.5 Pro	zai-org/GLM-5.2
Provider	Google	zai-org
Listed pricing route	Google	zai-org
Model family	Gemini 1.5	—
Accepted inputs	text, image, audio, video	text
Produced outputs	text	text
Context window	2MHigher	1M
Max output	8.19K	131.07KHigher
Input price / 1M	$1.25	$1.40
Output price / 1M	$5.00	$4.40
Output speed	65 t/s	—
Time to first token	0.90s	—
Reasoning mode	Not documented	Documented
Tool calling	Documented	Documented
Image input	Documented	Not documented
Audio input	Documented	Not documented
Structured output	Documented	Not documented
License	Proprietary	Not documented

Gemini 1.5 Pro vs zai-org/GLM-5.2

Gemini 1.5 Pro

zai-org/GLM-5.2

Key differences

Pricing, limits and capabilities

Which model should you choose?

Documentation and model profiles

Questions people ask

Compare a different pair