Gemini 2.5 Pro vs GLM 5.3 Flash

Price, context window & benchmark comparison

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Gemini 2.5 Pro

Google
$1.25 / $10.00
Input / Output · per 1M tokens
VS
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GLM 5.3 Flash

Z.ai (Zhipu)
$0.15 / $0.50
Input / Output · per 1M tokens
Compare different models
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Verdict: GLM 5.3 Flash is 14.5× cheaper than Gemini 2.5 Pro on a typical 3:1 input/output mix. GLM 5.3 Flash scores higher on the Artificial Analysis Intelligence Index (41.8 vs 16.1). GLM 5.3 Flash has the larger context window (1.3M vs 1M).
Gemini 2.5 ProGLM 5.3 Flash
Input price / 1M$1.25$0.15
Output price / 1M$10.00$0.50
Blended price (3:1)$3.44$0.24
Cached input / 1M$0.13$0.05
Context window1M1.3M
Max output66K944K
Intelligence index16.141.8
Coding index33.371.5
Providers31
Best provider uptime (30m)100.0%
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2025-06-172026-08-26
Retirement2026-10-20

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FAQ

Which is cheaper, Gemini 2.5 Pro or GLM 5.3 Flash?

GLM 5.3 Flash is 14.5× cheaper than Gemini 2.5 Pro on a typical 3:1 input/output mix.

Gemini 2.5 Pro vs GLM 5.3 Flash: which has a bigger context window?

Gemini 2.5 Pro: 1,048,576 tokens. GLM 5.3 Flash: 1,310,720 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Gemini 2.5 Pro ≈ $7,500, GLM 5.3 Flash ≈ $550.00.

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