Agnes 3.0 Flash vs Claude Opus 4.8
Agnes 3.0 Flash 
Claude Opus 4.8 Verdict
- Claude Opus 4.8 (max) leads on quality: 64.2 vs 62.3.
- Agnes 3.0 Flash is stronger in agents & tools, composite, long context.
- Claude Opus 4.8 (max) is stronger in knowledge, reasoning, coding, instruction following, maths.
- Agnes 3.0 Flash is 133× cheaper ($0.075 vs $10.00 per 1M blended).
| Metric | Agnes 3.0 Flash | Claude Opus 4.8 (max) |
|---|---|---|
| BenchLeader Index | 62.3 | 64.2 |
| Agents & tools score | 76.8 | 58.8 |
| Composite score | 74.0 | 68.7 |
| Knowledge score | 59.1 | 69.3 |
| Long context score | 67.0 | 65.2 |
| Reasoning score | 71.1 | 72.1 |
| Coding score | – | 62.5 |
| Instruction following score | – | 62.0 |
| Maths score | – | 69.6 |
| Blended price $/M | $0.075 | $10.00 |
| Output speed | – | 54 tok/s |
| Time to first answer | – | 24.0 s |
| Context window | 1M | 1M |
| GPQA Diamond | – | 91.0% |
| FrontierMath Tiers 1–3 | – | 80.0% |
| FrontierMath Tier 4 | – | 56.1% |
| OTIS Mock AIME | – | 98.3% |
| SimpleQA Verified | – | 53.0% |
| Terminal-Bench | – | 23.6% |
| OSWorld-Verified 2.0 | – | 20.6% |
| SciCode | – | 53.5% |
| APEX-Agents | – | 42.5% |
| ProofBench | – | 69.0% |
| LiveBench | – | 76.2% |
| LiveBench Reasoning | – | 89.2% |
| LiveBench Coding | – | 81.8% |
| LiveBench Agentic Coding | – | 50.5% |
| LiveBench Mathematics | – | 94.3% |
| LiveBench Data Analysis | – | 66.0% |
| LiveBench Language | – | 79.7% |
| LiveBench Instruction Following | – | 72.0% |
| AA Intelligence Index | 35.5 | 42.0 |
| IFBench | – | 62.2% |
| AA-LCR | 81.0% | 77.7% |
| AA-Omniscience | -10.6 | 28.8 |
| Terminal-Bench Hard | – | 58.3% |
| GPQA Diamond (AA) | 92.4% | 92.0% |
| Humanity's Last Exam (AA) | 38.5% | 48.7% |
| SciCode (AA) | 51.6% | 54.4% |
| τ²-Bench Telecom (AA) | – | 94.4% |
| AIME 2026 | – | 100.0% |
| HMMT February 2026 | – | 95.5% |
| MathArena Apex | – | 81.3% |
| MCP Atlas | – | 82.2% |
| ARC-AGI-1 | – | 92.5% |
| CritPt | 15.1% | 20.9% |
| GDPval (AA) | 53.7% | 49.5% |
| τ²-Bench Banking (AA) | 47.6% | 34.2% |
| Analyst Agent (AA) | – | 45.0% |
| DrugDiscoveryBench | – | 46.8% |
| FORTRESS | – | 18.2% |
| Chess Puzzles | – | 34.0% |
| EBR-bench | – | 28.6% |
| Mystery Game Puzzles | – | 36.0% |
| PostTrainBench | – | 32.9% |
| DeepSWE | – | 59.0% |
| LMCA | – | 57.5% |
| DTBench | – | 94.9% |
| CursorBench | – | 62.3% |
| Vending-Bench 2 | – | 2992.3 |
| GDP.pdf | – | 24.0% |
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 Opus 4.8: questions
- Is Agnes 3.0 Flash better than Claude Opus 4.8?
- Claude Opus 4.8 (max) leads on quality: 64.2 vs 62.3. The BenchLeader Index combines every independent quality benchmark; Claude Opus 4.8 (max) is ahead overall as of 2026-09-19, but check the category scores for your use.
- Is Agnes 3.0 Flash better than Claude Opus 4.8 for agentic tasks?
- Agnes 3.0 Flash scores higher in agentic tasks (77 vs 59 on the category index, where 50 is average).
- Which is cheaper, Agnes 3.0 Flash or Claude Opus 4.8?
- Agnes 3.0 Flash is cheaper: $0.075 against $10.00 per million tokens, blended at three input tokens per output token.
- Which has the larger context window?
- Both accept 1M tokens of context.