Claude Fable 5 vs GPT-5.4
For product management work, compared on the PM Index.
- Claude Fable 5 leads on the PM Index (67.8 vs 59.1).
- GPT-5.4 is cheaper ($5.63 vs $20.00 per 1M tokens).
| Metric | Claude Fable 5 | GPT-5.4 |
|---|---|---|
| PM Index | 67.8 | 59.1 |
| AA Intelligence | 64.9 | 56.8 |
| AA Coding | 62.0 | 57.2 |
| AA Agentic | 80.6 | 68.0 |
| Blended $/1M | $20.00 | $5.63 |
| Output tok/s | — | 160 |