Gemini 3.1 Pro Preview vs GLM 5.3 Prime

Price, context window & benchmark comparison

Gemini 3.1 Pro Preview

Google

$2.00 / $12.00

Input / Output · per 1M tokens

GLM 5.3 Prime

Z.ai (Zhipu)

$2.80 / $8.80

Input / Output · per 1M tokens

Compare different models

Verdict: GLM 5.3 Prime is 4% cheaper than Gemini 3.1 Pro Preview on a typical 3:1 input/output mix. Gemini 3.1 Pro Preview has the larger context window (1M vs 1M).

	Gemini 3.1 Pro Preview	GLM 5.3 Prime
Input price / 1M	$2.00	$2.80
Output price / 1M	$12.00	$8.80
Blended price (3:1)	$4.50	$4.30
Cached input / 1M	$0.20	$0.56
Context window	1M	1M
Max output	66K	131K
Intelligence index	29.7	—
Coding index	68.8	—
Providers	—	1
Best provider uptime (30m)	—	100.0%
Vision input	Yes	No
Reasoning	Yes	Yes
Tool calling	Yes	Yes
Released	2026-02-19	2026-09-23
Retirement	—	—

Cost calculator

Input tokens / requestOutput tokens / requestRequests / day

FAQ

Which is cheaper, Gemini 3.1 Pro Preview or GLM 5.3 Prime?

GLM 5.3 Prime is 4% cheaper than Gemini 3.1 Pro Preview on a typical 3:1 input/output mix.

Gemini 3.1 Pro Preview vs GLM 5.3 Prime: which has a bigger context window?

Gemini 3.1 Pro Preview: 1,048,576 tokens. GLM 5.3 Prime: 1,000,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Gemini 3.1 Pro Preview ≈ $10,000, GLM 5.3 Prime ≈ $10,000.

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