# Claude Opus 4.5 vs Claude Opus 4.8

> Side-by-side benchmark comparison for Claude Opus 4.5 and Claude Opus 4.8 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-opus-4-5-vs-claude-opus-4-8
- Last updated: October 10, 2026

- Shared sourced benchmarks: 14
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Pick Claude Opus 4.8 if you want the stronger benchmark profile. Claude Opus 4.5 only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Claude Opus 4.8 leads overall 69.12 to 54.14.
- The clearest category separation is in instruction following, where the averages are 31.9 for Claude Opus 4.5 and 75.4 for Claude Opus 4.8.
- The biggest single benchmark swing is ScreenSpot Pro in Multimodal & Grounded, with scores of 45.7% and 87.9%.
- Claude Opus 4.8 also has the larger context window at 1M.

## Model Snapshot

| Property | Claude Opus 4.5 | Claude Opus 4.8 |
|----------|----------|----------|
| Creator | Anthropic | Anthropic |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 200K | 1M |
| Overall Score | 54.14 | 69.12 |
| Benchmarks Covered | 61 | 40 |
| Pricing (input/output) | $5.00 / $25.00 | $5.00 / $25.00 |

## Category Breakdown

### Agentic

- Winner: Directional only
- Claude Opus 4.5 public-lane score: 31.2 (Estimated · #86/123)
- Claude Opus 4.8 public-lane score: 61.6 (Supported · #20/123)

| Benchmark | Claude Opus 4.5 | Claude Opus 4.8 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 59.3% | Coming soon | Coming soon |
| OSWorld-Verified | 66.3% | 83.4% | Claude Opus 4.8 |
| OSWorld | 66.3% | Coming soon | Coming soon |
| Claw-Eval | 59.6% | Coming soon | Coming soon |
| QwenClawBench | 52.3% | Coming soon | Coming soon |
| τ³-bench results | 70.2% | Coming soon | Coming soon |
| VITA-Bench | 23.3% | Coming soon | Coming soon |
| DeepPlanning | 26.4% | Coming soon | Coming soon |
| Toolathlon | 43.5% | 59.9% | Claude Opus 4.8 |
| MCP Atlas | 42.3% | 82.2% | Claude Opus 4.8 |
| MCP-Tasks | 71.8% | Coming soon | Coming soon |
| WideResearch | 76.4% | Coming soon | Coming soon |
| CyberGym | 50.6% | Coming soon | Coming soon |
| Gert Labs | 64.23% | 72.97% | Claude Opus 4.8 |
| JobBench | 32.3% | Coming soon | Coming soon |
| Terminal-Bench 3.0 | Coming soon | 21.1% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 74.6% | Coming soon |
| BrowseComp | Coming soon | 84.3% | Coming soon |
| DeepSearchQA | Coming soon | 93.1% | Coming soon |
| Finance Agent v2 | Coming soon | 53.9% | Coming soon |
| ResearchClawBench | Coming soon | 21.1% | Coming soon |
| OSWorld 2.0 | Coming soon | 20.6% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 71.9% | Coming soon |

### Coding

- Winner: Directional only
- Claude Opus 4.5 public-lane score: 41.2 (Estimated · #61/146)
- Claude Opus 4.8 public-lane score: 60.8 (Supported · #19/146)

| Benchmark | Claude Opus 4.5 | Claude Opus 4.8 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 80.9% | 88.6% | Claude Opus 4.8 |
| LiveCodeBench v6 | 84.8% | Coming soon | Coming soon |
| SWE-bench Pro | 57.1% | 69.2% | Claude Opus 4.8 |
| SWE Multilingual | 77.5% | 84.4% | Claude Opus 4.8 |
| NL2Repo | 43.2% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 59.3% | Coming soon | Coming soon |
| SWE Multimodal | Coming soon | 38.4% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 74.6% | Coming soon |
| cursorBench31 | Coming soon | 58.4% | Coming soon |
| CursorBench 3.2 | Coming soon | 62.3% | Coming soon |
| FrontierCode 1.1 Main | Coming soon | 46.5% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 87.8% | Coming soon |
| SWE-bench (Vals) | Coming soon | 88.6% | Coming soon |
| PostTrainBench v1.1 | Coming soon | 32.9% | Coming soon |

### Reasoning

- Winner: Not comparable
- Claude Opus 4.5 public-lane score: 78.4 (Unranked · 4 rankable rows)
- Claude Opus 4.8 public-lane score: 62.9 (#24/28)

| Benchmark | Claude Opus 4.5 | Claude Opus 4.8 | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | 64.4% | Coming soon | Coming soon |
| AI-Needle | 74% | Coming soon | Coming soon |
| ARC-AGI-2 | Coming soon | 72.1% | Coming soon |
| ARC-AGI-3 | Coming soon | 1.5% | Coming soon |
| ARC-AGI-1 | Coming soon | 92.50% | Coming soon |

### Multimodal & Grounded

- Winner: Directional only
- Claude Opus 4.5 public-lane score: 48.6 (#49/54)
- Claude Opus 4.8 public-lane score: 91.2 (#5/54)

| Benchmark | Claude Opus 4.5 | Claude Opus 4.8 | Winner |
|-----------|-----------|-----------|--------|
| MMMU | 80.7% | Coming soon | Coming soon |
| MMMU-Pro | 70.6% | Coming soon | Coming soon |
| RealWorldQA | 77.0% | Coming soon | Coming soon |
| OmniDocBench 1.5 | 87.7% | Coming soon | Coming soon |
| Video-MME (with subtitle) | 77.6% | Coming soon | Coming soon |
| Video-MME (w/o subtitle) | 81.4% | Coming soon | Coming soon |
| MathVision | 74.3% | Coming soon | Coming soon |
| We-Math | 70.0% | Coming soon | Coming soon |
| DynaMath | 79.7% | Coming soon | Coming soon |
| SimpleVQA | 65.7% | Coming soon | Coming soon |
| CharXiv | 68.5% | 89.9% | Claude Opus 4.8 |
| CountBench | 90.6% | Coming soon | Coming soon |
| AI2D_TEST | 87.7% | Coming soon | Coming soon |
| ERQA | 46.8% | Coming soon | Coming soon |
| VideoMMMU | 84.4% | Coming soon | Coming soon |
| MLVU (M-Avg) | 81.7% | Coming soon | Coming soon |
| ScreenSpot Pro | 45.7% | 87.9% | Claude Opus 4.8 |
| V* | 67.0% | Coming soon | Coming soon |
| OfficeQA Pro | Coming soon | 66.2% | Coming soon |
| CharXiv w/o tools | Coming soon | 80.5% | Coming soon |

### Knowledge

- Winner: Directional only
- Claude Opus 4.5 public-lane score: 51.1 (Estimated · #71/177)
- Claude Opus 4.8 public-lane score: 70.7 (Supported · #14/177)

| Benchmark | Claude Opus 4.5 | Claude Opus 4.8 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 87% | 93.6% | Claude Opus 4.8 |
| SuperGPQA | 70.6% | Coming soon | Coming soon |
| MMLU-Pro | 89.5% | Coming soon | Coming soon |
| MMLU-Redux | 96.6% | Coming soon | Coming soon |
| C-Eval | 92.2% | Coming soon | Coming soon |
| HLE | 30.8% | 57.9% | Claude Opus 4.8 |
| GPQA-D | Coming soon | 93.6% | Coming soon |
| HLE w/o tools | Coming soon | 49.8% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 92.4% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 89.6% | Coming soon |

### Multilingual

- Winner: Not comparable
- Claude Opus 4.5 public-lane score: 96.5 (#2/17)
- Claude Opus 4.8 public-lane score: Coming soon

| Benchmark | Claude Opus 4.5 | Claude Opus 4.8 | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | 85.7% | Coming soon | Coming soon |
| NOVA-63 | 56.7% | Coming soon | Coming soon |
| INCLUDE | 86.2% | 87.6% | Claude Opus 4.8 |
| PolyMath | 79.0% | Coming soon | Coming soon |
| MAXIFE | 79.2% | Coming soon | Coming soon |

### Instruction Following

- Winner: Directional only
- Claude Opus 4.5 public-lane score: 31.9 (#115/127)
- Claude Opus 4.8 public-lane score: 75.4 (#61/127)

| Benchmark | Claude Opus 4.5 | Claude Opus 4.8 | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 90.9% | Coming soon | Coming soon |
| IFBench | 58% | Coming soon | Coming soon |

### Mathematics

- Winner: Directional only
- Claude Opus 4.5 public-lane score: 59 (#6/7)
- Claude Opus 4.8 public-lane score: 65.7 (#2/7)

| Benchmark | Claude Opus 4.5 | Claude Opus 4.8 | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 95.1% | Coming soon | Coming soon |
| HMMT Feb 2025 | 92.9% | Coming soon | Coming soon |
| HMMT Nov 2025 | 93.3% | Coming soon | Coming soon |
| HMMT Feb 2026 | 85.3% | Coming soon | Coming soon |
| MMAnswerBench | 84.0% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | 20.690% | 47.241% | Claude Opus 4.8 |
| FrontierMath v2 (Tier 4) | 4.167% | 31.250% | Claude Opus 4.8 |
| USAMO 2026 | Coming soon | 96.7% | Coming soon |

## FAQ

### Which is better overall, Claude Opus 4.5 or Claude Opus 4.8?

Claude Opus 4.8 is ahead overall on BenchLM right now.

### Where is the biggest gap between Claude Opus 4.5 and Claude Opus 4.8?

The widest category gap is in instruction following, where the averages are 31.9 for Claude Opus 4.5 and 75.4 for Claude Opus 4.8.

### How many benchmarks does Claude Opus 4.5 cover on BenchLM?

Claude Opus 4.5 currently has 61 sourced benchmark scores on BenchLM.

### How many benchmarks does Claude Opus 4.8 cover on BenchLM?

Claude Opus 4.8 currently has 40 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Opus 4.5 vs Claude Opus 4.5 Thinking](/compare/claude-opus-4-5-vs-claude-opus-4-5-thinking)
- [Claude Opus 4.8 vs Claude Opus 4.5 Thinking](/compare/claude-opus-4-5-thinking-vs-claude-opus-4-8)
- [Claude Opus 4.5 vs Claude Opus 5.5](/compare/claude-opus-4-5-vs-claude-opus-5-5)
- [Claude Opus 4.8 vs Claude Opus 5.5](/compare/claude-opus-4-8-vs-claude-opus-5-5)

## Explore More

- [Claude Opus 4.5 profile](/models/claude-opus-4-5)
- [Claude Opus 4.8 profile](/models/claude-opus-4-8)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)