Agnes 2.5 Pro Beta vs Claude Fable 5
Agnes 2.5 Pro Beta 
Claude Fable 5 Verdict
- Claude Fable 5 (thinking) leads on quality: 70.9 vs 60.8.
- Agnes 2.5 Pro Beta is stronger in long context, multimodal.
- Claude Fable 5 (thinking) is stronger in agents & tools, composite, knowledge, reasoning, instruction following.
- Agnes 2.5 Pro Beta is 133× cheaper ($0.150 vs $20.00 per 1M blended).
| Metric | Agnes 2.5 Pro Beta | Claude Fable 5 (thinking) |
|---|---|---|
| BenchLeader Index | 60.8 | 70.9 |
| Agents & tools score | 64.4 | 74.1 |
| Composite score | 73.7 | 92.1 |
| Knowledge score | 59.2 | 84.9 |
| Long context score | 68.0 | 67.7 |
| Multimodal score | 59.8 | – |
| Reasoning score | 72.2 | 90.8 |
| Instruction following score | – | 63.0 |
| Blended price $/M | $0.150 | $20.00 |
| Output speed | – | 57 tok/s |
| Time to first answer | – | 108.4 s |
| Context window | 1M | 1M |
| AA Intelligence Index | 35.2 | 49.7 |
| IFBench | – | 63.5% |
| AA-LCR | 83.0% | 82.3% |
| MMMU-Pro | 75.4% | – |
| AA-Omniscience | -10.5 | 43.3 |
| Terminal-Bench Hard | – | 62.9% |
| GPQA Diamond (AA) | 90.5% | 92.6% |
| Humanity's Last Exam (AA) | 37.5% | 55.5% |
| SciCode (AA) | 48.8% | 61.0% |
| τ²-Bench Telecom (AA) | – | 98.5% |
| Kagi LLM Benchmark | – | 91.4% |
| CritPt | 15.7% | 28.6% |
| GDPval (AA) | 43.8% | 56.6% |
| τ²-Bench Banking (AA) | 35.7% | 38.1% |
| Analyst Agent (AA) | – | 48.8% |
Data as of 2026-09-19. Best configuration of each model; every score links to its source on the model pages.
Agnes 2.5 Pro Beta vs Claude Fable 5: questions
- Is Agnes 2.5 Pro Beta better than Claude Fable 5?
- Claude Fable 5 (thinking) leads on quality: 70.9 vs 60.8. The BenchLeader Index combines every independent quality benchmark; Claude Fable 5 (thinking) is ahead overall as of 2026-09-19, but check the category scores for your use.
- Is Agnes 2.5 Pro Beta better than Claude Fable 5 for agentic tasks?
- Claude Fable 5 scores higher in agentic tasks (74 vs 64 on the category index, where 50 is average).
- Which is cheaper, Agnes 2.5 Pro Beta or Claude Fable 5?
- Agnes 2.5 Pro Beta is cheaper: $0.150 against $20.00 per million tokens, blended at three input tokens per output token.
- Which has the larger context window?
- Both accept 1M tokens of context.