Claude Fable 5.2 vs GLM 5.3 FlashX

Price, context window & benchmark comparison

Anthropic

Claude Fable 5.2

Anthropic
$8.00 / $40.00
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
Anthropic
Z.ai (Zhipu)
Verdict: GLM 5.3 FlashX is 27.1× cheaper than Claude Fable 5.2 on a typical 3:1 input/output mix. GLM 5.3 FlashX has the larger context window (1M vs 1M).
Claude Fable 5.2GLM 5.3 FlashX
Input price / 1M$8.00$0.37
Output price / 1M$40.00$1.25
Blended price (3:1)$16.00$0.59
Cached input / 1M$0.20$0.075
Context window1M1M
Max output128K131K
Intelligence index64.6—
Coding index——
Providers51
Best provider uptime (30m)100.0%100.0%
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-11-072026-09-18
Retirement——

Cost calculator

FAQ

Which is cheaper, Claude Fable 5.2 or GLM 5.3 FlashX?

GLM 5.3 FlashX is 27.1× cheaper than Claude Fable 5.2 on a typical 3:1 input/output mix.

Claude Fable 5.2 vs GLM 5.3 FlashX: which has a bigger context window?

Claude Fable 5.2: 1,000,000 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: Claude Fable 5.2 ≈ $36,000, GLM 5.3 FlashX ≈ $1,365.

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