Gemini 2.5 Flash vs GLM 5.3 Prime

Price, context window & benchmark comparison

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Gemini 2.5 Flash

Google
$0.30 / $2.50
Input / Output · per 1M tokens
VS
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GLM 5.3 Prime

Z.ai (Zhipu)
$2.80 / $8.80
Input / Output · per 1M tokens
Compare different models
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Verdict: Gemini 2.5 Flash is 5.1× cheaper than GLM 5.3 Prime on a typical 3:1 input/output mix. Gemini 2.5 Flash has the larger context window (1M vs 1M).
Gemini 2.5 FlashGLM 5.3 Prime
Input price / 1M$0.30$2.80
Output price / 1M$2.50$8.80
Blended price (3:1)$0.85$4.30
Cached input / 1M$0.03$0.56
Context window1M1M
Max output66K131K
Intelligence index——
Coding index——
Providers—1
Best provider uptime (30m)—100.0%
Vision inputYesNo
ReasoningYesYes
Tool callingYesYes
Released2025-06-172026-09-23
Retirement2026-10-20—

Cost calculator

FAQ

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

Gemini 2.5 Flash is 5.1× cheaper than GLM 5.3 Prime on a typical 3:1 input/output mix.

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

Gemini 2.5 Flash: 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 2.5 Flash ≈ $1,850, GLM 5.3 Prime ≈ $10,000.

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