Agnes 3.0 Flash vs Claude Sonnet 5
Agnes 3.0 Flash 
Claude Sonnet 5 Verdict
- Agnes 3.0 Flash and Claude Sonnet 5 (high) are level on quality (62.3 vs 62.2).
- Agnes 3.0 Flash is stronger in agents & tools, composite, long context, reasoning.
- Claude Sonnet 5 (high) is stronger in knowledge, coding, human preference, maths, multimodal.
- Agnes 3.0 Flash is 53× cheaper ($0.075 vs $4.00 per 1M blended).
| Metric | Agnes 3.0 Flash | Claude Sonnet 5 (high) |
|---|---|---|
| BenchLeader Index | 62.3 | 62.2 |
| Agents & tools score | 76.8 | 62.0 |
| Composite score | 74.0 | 69.6 |
| Knowledge score | 59.1 | 62.4 |
| Long context score | 67.0 | 64.7 |
| Reasoning score | 71.1 | 69.6 |
| Coding score | – | 61.5 |
| Human preference score | – | 65.9 |
| Maths score | – | 66.9 |
| Multimodal score | – | 62.6 |
| Blended price $/M | $0.075 | $4.00 |
| Output speed | – | 64 tok/s |
| Time to first answer | – | 2.9 s |
| Context window | 1M | 1M |
| SciCode | – | 48.6% |
| WeirdML | – | 68.8% |
| LMArena Text | – | 1461 |
| LMArena Hard Prompts | – | 1489 |
| LMArena Coding | – | 1521 |
| LMArena WebDev | – | 1537 |
| LMArena Vision | – | 1277 |
| LMArena Agent | – | 6 |
| AA Intelligence Index | 35.5 | 32.0 |
| AA-LCR | 81.0% | 76.7% |
| AA-Omniscience | -10.6 | -3.7 |
| GPQA Diamond (AA) | 92.4% | – |
| Humanity's Last Exam (AA) | 38.5% | 35.7% |
| SciCode (AA) | 51.6% | 54.3% |
| CritPt | 15.1% | 15.1% |
| GDPval (AA) | 53.7% | 40.4% |
| τ²-Bench Banking (AA) | 47.6% | – |
| LMArena Maths | – | 1476 |
| LMArena Creative Writing | – | 1437 |
| LMArena Instruction Following | – | 1465 |
| LMArena Multi-turn | – | 1473 |
| LMArena Longer Queries | – | 1482 |
| LMArena Document | – | 1476 |
| DeepSWE | – | 48.2% |
| CursorBench | – | 56.9% |
| ALE-Bench | – | 1463.1 |
Data as of 2026-09-19. Best configuration of each model; every score links to its source on the model pages.
Agnes 3.0 Flash vs Claude Sonnet 5: questions
- Is Agnes 3.0 Flash better than Claude Sonnet 5?
- Agnes 3.0 Flash and Claude Sonnet 5 (high) are level on quality (62.3 vs 62.2). The BenchLeader Index combines every independent quality benchmark; Agnes 3.0 Flash is ahead overall as of 2026-09-19, but check the category scores for your use.
- Is Agnes 3.0 Flash better than Claude Sonnet 5 for agentic tasks?
- Agnes 3.0 Flash scores higher in agentic tasks (77 vs 62 on the category index, where 50 is average).
- Which is cheaper, Agnes 3.0 Flash or Claude Sonnet 5?
- Agnes 3.0 Flash is cheaper: $0.075 against $4.00 per million tokens, blended at three input tokens per output token.
- Which has the larger context window?
- Both accept 1M tokens of context.