Aion 3.5 vs GLM 5.3 FlashX

Price, context window & benchmark comparison

AionLabs

Aion 3.5

AionLabs
$3.00 / $6.00
Input / Output · per 1M tokens
VS
Z.ai (Zhipu)

GLM 5.3 FlashX

Z.ai (Zhipu)
$0.37 / $1.25
Input / Output · per 1M tokens
Compare different models
AionLabs
Z.ai (Zhipu)
Verdict: GLM 5.3 FlashX is 6.4× cheaper than Aion 3.5 on a typical 3:1 input/output mix. GLM 5.3 FlashX has the larger context window (1M vs 262K).
Aion 3.5GLM 5.3 FlashX
Input price / 1M$3.00$0.37
Output price / 1M$6.00$1.25
Blended price (3:1)$3.75$0.59
Cached input / 1M$0.75$0.09
Context window262K1M
Max output33K131K
Intelligence index
Coding index
Providers1
Best provider uptime (30m)100.0%
Vision inputNoYes
ReasoningYesYes
Tool callingYesYes
Released2026-09-232026-09-18
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FAQ

Which is cheaper, Aion 3.5 or GLM 5.3 FlashX?

GLM 5.3 FlashX is 6.4× cheaper than Aion 3.5 on a typical 3:1 input/output mix.

Aion 3.5 vs GLM 5.3 FlashX: which has a bigger context window?

Aion 3.5: 262,144 tokens. GLM 5.3 FlashX: 1,048,576 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Aion 3.5 ≈ $9,000, GLM 5.3 FlashX ≈ $1,365.

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