Claude Fable 5 vs Claude Fable 5.1
Price, context window & benchmark comparison
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Verdict: Claude Fable 5.1 scores higher on the Artificial Analysis Intelligence Index (53.4 vs 49.6).
| Claude Fable 5 | Claude Fable 5.1 | |
|---|---|---|
| Input price / 1M | $10.00 | $10.00 |
| Output price / 1M | $50.00 | $50.00 |
| Blended price (3:1) | $20.00 | $20.00 |
| Cached input / 1M | $1.00 | $0.25 |
| Context window | 1M | 1M |
| Max output | 128K | 128K |
| Intelligence index | 49.6 | 53.4 |
| Coding index | 76.5 | 81.6 |
| Providers | 6 | 4 |
| Best provider uptime (30m) | 100.0% | 100.0% |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2026-06-09 | 2026-09-01 |
| Retirement | — | — |
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FAQ
Which is cheaper, Claude Fable 5 or Claude Fable 5.1?
Claude Fable 5 and Claude Fable 5.1 are priced identically.
Claude Fable 5 vs Claude Fable 5.1: which has a bigger context window?
Claude Fable 5: 1,000,000 tokens. Claude Fable 5.1: 1,000,000 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: Claude Fable 5 ≈ $45,000, Claude Fable 5.1 ≈ $45,000.
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