Claude Fable 5 vs Grok 4.7
Claude Fable 5 
Grok 4.7 Verdict
- Claude Fable 5 (thinking) leads on quality: 70.8 vs 65.8.
- Claude Fable 5 (thinking) is stronger in agents & tools, composite, instruction following, knowledge, long context, reasoning.
- Grok 4.7 (high) is 6.7× cheaper ($3.00 vs $20.00 per 1M blended).
| Metric | Claude Fable 5 (thinking) | Grok 4.7 (high) |
|---|---|---|
| BenchLeader Index | 70.8 | 65.8 |
| Agents & tools score | 74.1 | – |
| Composite score | 91.7 | 87.5 |
| Instruction following score | 63.0 | – |
| Knowledge score | 84.6 | 72.6 |
| Long context score | 67.6 | 64.8 |
| Reasoning score | 90.8 | 76.4 |
| Blended price $/M | $20.00 | $3.00 |
| Output speed | 70 tok/s | 55 tok/s |
| Time to first answer | 135.7 s | 1.4 s |
| Context window | 1M | 500k |
| AA Intelligence Index | 49.6 | 46.3 |
| IFBench | 63.5% | – |
| AA-LCR | 82.3% | 77.0% |
| AA-Omniscience | 43.3 | 30.9 |
| Terminal-Bench Hard | 62.9% | – |
| GPQA Diamond (AA) | 92.6% | – |
| Humanity's Last Exam (AA) | 55.5% | 42.3% |
| SciCode (AA) | 61.0% | 57.8% |
| τ²-Bench Telecom (AA) | 98.5% | – |
| LegalBench | – | 85.1% |
| Kagi LLM Benchmark | 91.4% | – |
| CritPt | 28.6% | 18.0% |
| GDPval (AA) | 54.8% | 59.7% |
| τ²-Bench Banking (AA) | 38.1% | – |
| Analyst Agent (AA) | 48.8% | – |
| 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% |
Data as of 2026-09-21. Best configuration of each model; every score links to its source on the model pages.
Claude Fable 5 vs Grok 4.7: questions
- Is Claude Fable 5 better than Grok 4.7?
- Claude Fable 5 (thinking) leads on quality: 70.8 vs 65.8. The BenchLeader Index combines every independent quality benchmark; Claude Fable 5 (thinking) is ahead overall as of 2026-09-21, but check the category scores for your use.
- Which is cheaper, Claude Fable 5 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 or Grok 4.7?
- Claude Fable 5 streams faster: 70 against 55 output tokens per second.
- Which has the larger context window?
- Claude Fable 5 accepts more context: 1M against 500k tokens.