GLM 5.3 FlashX vs GPT-5.6 Sol

Price, context window & benchmark comparison

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GLM 5.3 FlashX

Z.ai (Zhipu)
$0.37 / $1.25
Input / Output · per 1M tokens
VS
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GPT-5.6 Sol

OpenAI
$2.00 / $10.00
Input / Output · per 1M tokens
Compare different models
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Verdict: GLM 5.3 FlashX is 6.8× cheaper than GPT-5.6 Sol on a typical 3:1 input/output mix. GPT-5.6 Sol has the larger context window (1.1M vs 1M).
GLM 5.3 FlashXGPT-5.6 Sol
Input price / 1M$0.37$2.00
Output price / 1M$1.25$10.00
Blended price (3:1)$0.59$4.00
Cached input / 1M$0.09$0.20
Context window1M1.1M
Max output131K128K
Intelligence index47
Coding index77.4
Providers1
Best provider uptime (30m)100.0%
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-09-182026-07-09
Retirement

Cost calculator

FAQ

Which is cheaper, GLM 5.3 FlashX or GPT-5.6 Sol?

GLM 5.3 FlashX is 6.8× cheaper than GPT-5.6 Sol on a typical 3:1 input/output mix.

GLM 5.3 FlashX vs GPT-5.6 Sol: which has a bigger context window?

GLM 5.3 FlashX: 1,048,576 tokens. GPT-5.6 Sol: 1,050,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: GLM 5.3 FlashX ≈ $1,365, GPT-5.6 Sol ≈ $9,000.

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