GLM 5.3 Prime vs GPT Chat Latest

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 Chat Latest

OpenAI
$5.00 / $30.00
Input / Output · per 1M tokens
Compare different models
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Verdict: GLM 5.3 Prime is 2.6× cheaper than GPT Chat Latest on a typical 3:1 input/output mix. GLM 5.3 Prime has the larger context window (1M vs 400K).
GLM 5.3 PrimeGPT Chat Latest
Input price / 1M$2.80$5.00
Output price / 1M$8.80$30.00
Blended price (3:1)$4.30$11.25
Cached input / 1M$0.56$0.50
Context window1M400K
Max output131K128K
Intelligence index
Coding index
Providers1
Best provider uptime (30m)100.0%
Vision inputNoYes
ReasoningYesNo
Tool callingYesYes
Released2026-09-232026-05-05
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FAQ

Which is cheaper, GLM 5.3 Prime or GPT Chat Latest?

GLM 5.3 Prime is 2.6× cheaper than GPT Chat Latest on a typical 3:1 input/output mix.

GLM 5.3 Prime vs GPT Chat Latest: which has a bigger context window?

GLM 5.3 Prime: 1,000,000 tokens. GPT Chat Latest: 400,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: GLM 5.3 Prime ≈ $10,000, GPT Chat Latest ≈ $25,000.

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