Claude Fable 5.1 vs GLM 5 Turbo
Claude Fable 5.1 
GLM 5 Turbo Verdict
- Claude Fable 5.1 leads on quality: 70.7 vs 58.4.
- Claude Fable 5.1 is stronger in agents & tools, coding, composite, knowledge, long context.
- GLM 5 Turbo is stronger in instruction following.
- GLM 5 Turbo is 11× cheaper ($1.90 vs $20.00 per 1M blended).
- Claude Fable 5.1 streams 3.7× faster (67 vs 18 tokens per second).
| Metric | Claude Fable 5.1 | GLM 5 Turbo |
|---|---|---|
| BenchLeader Index | 70.7 | 58.4 |
| Agents & tools score | 72.1 | 63.1 |
| Coding score | 68.5 | – |
| Composite score | 95.0 | 62.9 |
| Knowledge score | 70.5 | 56.6 |
| Long context score | 69.4 | 62.4 |
| Instruction following score | – | 71.8 |
| Blended price $/M | $20.00 | $1.90 |
| Output speed | 67 tok/s | 18 tok/s |
| Time to first answer | 262.4 s | 7.9 s |
| Context window | 1M | 200k |
| APEX-Agents | 47.4% | – |
| Epoch Capabilities Index | 164.2 | – |
| AA Intelligence Index | 53.4 | 26.6 |
| IFBench | – | 73.2% |
| AA-LCR | 85.3% | 71.7% |
| AA-Omniscience | 43.5 | -16.4 |
| Terminal-Bench Hard | – | 33.3% |
| GPQA Diamond (AA) | 93.7% | 84.8% |
| Humanity's Last Exam (AA) | 59.1% | 27.8% |
| SciCode (AA) | 63.1% | – |
| τ²-Bench Telecom (AA) | – | 98.5% |
| LiveCodeBench | 90.5% | – |
| MMLU-Pro | 92.4% | – |
| IOI | 90.8% | – |
| LegalBench | 88.5% | – |
| TaxEval | 76.0% | – |
| Terminal-Bench 2.1 (Vals) | 85.0% | – |
| GPQA Diamond (Vals) | 93.4% | – |
| Vals Index | 68.8 | – |
| MCP Atlas | 87.2% | – |
| PRBench Finance | 50.8% | – |
| PRBench Legal | 51.6% | – |
| HiL-Bench | 61.5% | – |
Data as of 2026-09-13. Best configuration of each model; every score links to its source on the model pages.
Claude Fable 5.1 vs GLM 5 Turbo: questions
- Is Claude Fable 5.1 better than GLM 5 Turbo?
- Claude Fable 5.1 leads on quality: 70.7 vs 58.4. The BenchLeader Index combines every independent quality benchmark; Claude Fable 5.1 is ahead overall as of 2026-09-13, but check the category scores for your use.
- Is Claude Fable 5.1 better than GLM 5 Turbo for agentic tasks?
- Claude Fable 5.1 scores higher in agentic tasks (72 vs 63 on the category index, where 50 is average).
- Which is cheaper, Claude Fable 5.1 or GLM 5 Turbo?
- GLM 5 Turbo is cheaper: $1.90 against $20.00 per million tokens, blended at three input tokens per output token.
- Which is faster, Claude Fable 5.1 or GLM 5 Turbo?
- Claude Fable 5.1 streams faster: 67 against 18 output tokens per second.
- Which has the larger context window?
- Claude Fable 5.1 accepts more context: 1M against 200k tokens.