Gemini 3.7 Flash vs GLM-4.5

Both are Mid-tier models, from Google and Z.ai respectively. GLM-4.5 is the cheaper choice overall at a 4:1 input:output ratio.

Which is cheaper

Input price: GLM-4.5 is cheaper ($0.60 vs $0.75).
Output price: GLM-4.5 is cheaper ($2.20 vs $3.75).
Blended, 4:1 input:output ratio: GLM-4.5 is 31.9% cheaper ($0.92 vs $1.35 per weighted 1M tokens).

Side by side

Spec	Gemini 3.7 Flash	GLM-4.5
Provider	Google	Z.ai
Tier	Mid	Mid
Context window	1M	128K
Max output	64K	96K
Input $/1M	$0.75	$0.60
Output $/1M	$3.75	$2.20
Cache read $/1M	$0.075	$0.11
Modalities	text, image	text

Gemini 3.7 Flash. Standard tier. Introductory pricing through 31 December 2026; from 1 January 2027 the rate is $1.50 input / $7.50 output, cache read $0.15 per 1M. Cached context is billed for storage at $0.50 per 1M tokens per hour, rising to $1.00.

GLM-4.5. Popular open-weight GLM generation, per 1M tokens.

Sources

Gemini 3.7 Flash — verified August 29, 2026

GLM-4.5 — verified August 29, 2026

Full Gemini 3.7 Flash pricing page → · Full GLM-4.5 pricing page →