Claude Fable 5 vs Grok 4.7
Claude Fable 5 (Anthropic) and Grok 4.7 (xAI) compared on price, context window, speed and independent benchmarks. Claude Fable 5 scores higher on the Artificial Analysis Intelligence Index (49.6 vs 46.4), while Grok 4.7 is 6.7× cheaper on a blended basis. Pick Claude Fable 5 for the hardest tasks and Grok 4.7 when cost dominates.
| Claude Fable 5 | Grok 4.7 | |
|---|---|---|
| Provider | Anthropic | xAI |
| Input $/1M | $10.0 | $2.00 |
| Output $/1M | $50.0 | $6.00 |
| Blended $/1M (3:1) | $20.0 | $3.00 |
| Cached input $/1M | $1.00 | $0.50 |
| Context window | 1M | 500K |
| Knowledge cutoff | 2026-01 | 2026-05 |
| License | proprietary | proprietary |
| Speed (tok/s) | 68 | 47 |
| Artificial Analysis Intelligence Index | 49.6 | 46.4 |
| LMArena Elo | 1493 | — |
| GPQA Diamond | 92.6% | — |
| AIME | 99.7%* | — |
| SWE-bench Verified | 95% | — |
| MMLU-Pro | 91.5%* | — |
| Humanity's Last Exam | 55.5% | 43.1% |