GLM 5.3 Prime vs GPT Audio Mini

Price, context window & benchmark comparison

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GLM 5.3 Prime

Z.ai (Zhipu)
$2.80 / $8.80
Input / Output · per 1M tokens
VS
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GPT Audio Mini

OpenAI
$0.60 / $2.40
Input / Output · per 1M tokens
Compare different models
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Verdict: GPT Audio Mini is 4.1× cheaper than GLM 5.3 Prime on a typical 3:1 input/output mix. GLM 5.3 Prime has the larger context window (1M vs 128K).
GLM 5.3 PrimeGPT Audio Mini
Input price / 1M$2.80$0.60
Output price / 1M$8.80$2.40
Blended price (3:1)$4.30$1.05
Cached input / 1M$0.56
Context window1M128K
Max output131K16K
Intelligence index
Coding index
Providers1
Best provider uptime (30m)100.0%
Vision inputNoNo
ReasoningYesNo
Tool callingYesYes
Released2026-09-232026-01-19
Retirement

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FAQ

Which is cheaper, GLM 5.3 Prime or GPT Audio Mini?

GPT Audio Mini is 4.1× cheaper than GLM 5.3 Prime on a typical 3:1 input/output mix.

GLM 5.3 Prime vs GPT Audio Mini: which has a bigger context window?

GLM 5.3 Prime: 1,000,000 tokens. GPT Audio Mini: 128,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: GLM 5.3 Prime ≈ $10,000, GPT Audio Mini ≈ $2,400.

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