Gemini 3.1 Pro Preview vs GLM 5.3 FlashX

Price, context window & benchmark comparison

G

Gemini 3.1 Pro Preview

Google
$2.00 / $12.00
Input / Output · per 1M tokens
VS
Z

GLM 5.3 FlashX

Z.ai (Zhipu)
$0.37 / $1.25
Input / Output · per 1M tokens
Compare different models
G
Z
Verdict: GLM 5.3 FlashX is 7.6× cheaper than Gemini 3.1 Pro Preview on a typical 3:1 input/output mix.
Gemini 3.1 Pro PreviewGLM 5.3 FlashX
Input price / 1M$2.00$0.37
Output price / 1M$12.00$1.25
Blended price (3:1)$4.50$0.59
Cached input / 1M$0.20$0.09
Context window1M1M
Max output66K131K
Intelligence index29.7
Coding index68.8
Providers1
Best provider uptime (30m)100.0%
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-02-192026-09-18
Retirement

Cost calculator

FAQ

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

GLM 5.3 FlashX is 7.6× cheaper than Gemini 3.1 Pro Preview on a typical 3:1 input/output mix.

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

Gemini 3.1 Pro Preview: 1,048,576 tokens. GLM 5.3 FlashX: 1,048,576 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 FlashX ≈ $1,365.

More comparisons