Gemini 3 Flash Preview vs GLM 5.3 Prime

Price, context window & benchmark comparison

Gemini 3 Flash Preview

Google

$0.50 / $3.00

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: Gemini 3 Flash Preview is 3.8× cheaper than GLM 5.3 Prime on a typical 3:1 input/output mix. Gemini 3 Flash Preview has the larger context window (1M vs 1M).

	Gemini 3 Flash Preview	GLM 5.3 Prime
Input price / 1M	$0.50	$2.80
Output price / 1M	$3.00	$8.80
Blended price (3:1)	$1.13	$4.30
Cached input / 1M	$0.05	$0.56
Context window	1M	1M
Max output	66K	131K
Intelligence index	—	—
Coding index	—	—
Providers	—	1
Best provider uptime (30m)	—	100.0%
Vision input	Yes	No
Reasoning	Yes	Yes
Tool calling	Yes	Yes
Released	2025-12-17	2026-09-23
Retirement	—	—

Cost calculator

Input tokens / requestOutput tokens / requestRequests / day

FAQ

Which is cheaper, Gemini 3 Flash Preview or GLM 5.3 Prime?

Gemini 3 Flash Preview is 3.8× cheaper than GLM 5.3 Prime on a typical 3:1 input/output mix.

Gemini 3 Flash Preview vs GLM 5.3 Prime: which has a bigger context window?

Gemini 3 Flash 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 Flash Preview ≈ $2,500, GLM 5.3 Prime ≈ $10,000.

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