GLM 5.2 vs GPT-6 Astra Pro

Price, context window & benchmark comparison

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GLM 5.2

Z.ai (Zhipu)
$0.65 / $2.04
Input / Output · per 1M tokens
VS
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GPT-6 Astra Pro

OpenAI
$10.00 / $50.00
Input / Output · per 1M tokens
Compare different models
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Verdict: GLM 5.2 is 20.0× cheaper than GPT-6 Astra Pro on a typical 3:1 input/output mix. GPT-6 Astra Pro has the larger context window (1.1M vs 1M).
GLM 5.2GPT-6 Astra Pro
Input price / 1M$0.65$10.00
Output price / 1M$2.04$50.00
Blended price (3:1)$1.00$20.00
Cached input / 1M$0.12$1.00
Context window1M1.1M
Max output131K128K
Intelligence index33.7
Coding index68.8
Providers5
Best provider uptime (30m)100.0%
Vision inputNoYes
ReasoningYesYes
Tool callingYesYes
Released2026-06-162026-09-04
Retirement

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FAQ

Which is cheaper, GLM 5.2 or GPT-6 Astra Pro?

GLM 5.2 is 20.0× cheaper than GPT-6 Astra Pro on a typical 3:1 input/output mix.

GLM 5.2 vs GPT-6 Astra Pro: which has a bigger context window?

GLM 5.2: 1,048,576 tokens. GPT-6 Astra Pro: 1,050,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: GLM 5.2 ≈ $2,320, GPT-6 Astra Pro ≈ $45,000.

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