Claude Fable 5.2 vs GLM 5.3

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

Z.ai (Zhipu)
$0.0699 / $1.40
Input / Output · per 1M tokens
Compare different models
Anthropic
Z.ai (Zhipu)
Verdict: GLM 5.3 is 39.8× cheaper than Claude Fable 5.2 on a typical 3:1 input/output mix. Claude Fable 5.2 scores higher on the Artificial Analysis Intelligence Index (64.6 vs 31.7). GLM 5.3 has the larger context window (1M vs 1M).
Claude Fable 5.2GLM 5.3
Input price / 1M$8.00$0.0699
Output price / 1M$40.00$1.40
Blended price (3:1)$16.00$0.40
Cached input / 1M$0.20$0.0689
Context window1M1M
Max output128K944K
Intelligence index64.631.7
Coding index—74.8
Providers548
Best provider uptime (30m)100.0%100.0%
Vision inputYesNo
ReasoningYesYes
Tool callingYesYes
Released2026-11-072026-08-18
Retirement——

Cost calculator

FAQ

Which is cheaper, Claude Fable 5.2 or GLM 5.3?

GLM 5.3 is 39.8× cheaper than Claude Fable 5.2 on a typical 3:1 input/output mix.

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

Claude Fable 5.2: 1,000,000 tokens. GLM 5.3: 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 ≈ $839.80.

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