Claude Fable 5.1 vs Grok 4.7
Claude Fable 5.1 
Grok 4.7 Verdict
- Claude Fable 5.1 (high) leads on quality: 71.9 vs 65.8.
- Claude Fable 5.1 (high) is stronger in agents & tools, coding, composite, knowledge, long context, reasoning.
- Grok 4.7 (high) is 6.7× cheaper ($3.00 vs $20.00 per 1M blended).
| Metric | Claude Fable 5.1 (high) | Grok 4.7 (high) |
|---|---|---|
| BenchLeader Index | 71.9 | 65.8 |
| Agents & tools score | 66.6 | – |
| Coding score | 74.1 | – |
| Composite score | 93.6 | 87.5 |
| Knowledge score | 83.4 | 72.6 |
| Long context score | 68.3 | 64.8 |
| Reasoning score | 81.0 | 76.4 |
| Blended price $/M | $20.00 | $3.00 |
| Output speed | 57 tok/s | 55 tok/s |
| Time to first answer | 26.2 s | 1.4 s |
| Context window | 1M | 500k |
| Terminal-Bench | 54.5% | – |
| SciCode | 57.6% | – |
| WeirdML | 92.3% | – |
| APEX-Agents | 44.4% | – |
| AA Intelligence Index | 51.1 | 46.3 |
| AA-LCR | 83.7% | 77.0% |
| AA-Omniscience | 40.8 | 30.9 |
| GPQA Diamond (AA) | 90.6% | – |
| Humanity's Last Exam (AA) | 55.9% | 42.3% |
| SciCode (AA) | 58.7% | 57.8% |
| LegalBench | – | 85.1% |
| ARC-AGI-1 | 96.0% | – |
| ARC-AGI-2 | 88.8% | – |
| CritPt | 30.3% | 18.0% |
| GDPval (AA) | 55.9% | 59.7% |
| τ²-Bench Banking (AA) | 43.1% | – |
| Code Migration | – | 34.7% |
| Excel Modeling Benchmark | – | 54.9% |
| Harvey's Legal Agent Benchmark | – | 19.6% |
| Legal Research Bench | – | 39.9% |
| MedCode | – | 48.7% |
| MedScribe | – | 87.2% |
| ProgramBench | – | 0.0% |
| Public Benefits Bench | – | 68.5% |
| SAGE | – | 31.0% |
| MirrorCode | 73.3% | – |
| CursorBench | 69.4% | – |
| ALE-Bench | 2143.2 | – |
Data as of 2026-09-21. Best configuration of each model; every score links to its source on the model pages.
Claude Fable 5.1 vs Grok 4.7: questions
- Is Claude Fable 5.1 better than Grok 4.7?
- Claude Fable 5.1 (high) leads on quality: 71.9 vs 65.8. The BenchLeader Index combines every independent quality benchmark; Claude Fable 5.1 (high) is ahead overall as of 2026-09-21, but check the category scores for your use.
- Which is cheaper, Claude Fable 5.1 or Grok 4.7?
- Grok 4.7 is cheaper: $3.00 against $20.00 per million tokens, blended at three input tokens per output token.
- Which is faster, Claude Fable 5.1 or Grok 4.7?
- Claude Fable 5.1 streams faster: 57 against 55 output tokens per second.
- Which has the larger context window?
- Claude Fable 5.1 accepts more context: 1M against 500k tokens.