Claude Fable 5.2 vs GLM 5.3 Flash
Price, context window & benchmark comparison
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Verdict: GLM 5.3 Flash is 323.1× 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 27.8). GLM 5.3 Flash has the larger context window (1M vs 1M).
| Claude Fable 5.2 | GLM 5.3 Flash | |
|---|---|---|
| Input price / 1M | $8.00 | $0.0399 |
| Output price / 1M | $40.00 | $0.0784 |
| Blended price (3:1) | $16.00 | $0.0495 |
| Cached input / 1M | $0.20 | $0.03 |
| Context window | 1M | 1M |
| Max output | 128K | 131K |
| Intelligence index | 64.6 | 27.8 |
| Coding index | — | 71.5 |
| Providers | 5 | 42 |
| Best provider uptime (30m) | 100.0% | 100.0% |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2026-11-07 | 2026-08-26 |
| Retirement | — | — |
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FAQ
Which is cheaper, Claude Fable 5.2 or GLM 5.3 Flash?
GLM 5.3 Flash is 323.1× cheaper than Claude Fable 5.2 on a typical 3:1 input/output mix.
Claude Fable 5.2 vs GLM 5.3 Flash: which has a bigger context window?
Claude Fable 5.2: 1,000,000 tokens. GLM 5.3 Flash: 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 Flash ≈ $119.00.
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