# Claude Haiku 4.5 vs Claude Opus 4.8

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

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

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

## Quick Verdict

Claude Opus 4.8 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Claude Opus 4.8 has the higher overall point estimate 69.12 to 41.47. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in coding, where the averages are 18.3 for Claude Haiku 4.5 and 60.8 for Claude Opus 4.8.
- The biggest single benchmark swing is LiveCodeBench (Vals) in Coding, with scores of 41.2% and 87.8%.
- Claude Haiku 4.5 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Claude Opus 4.8 also has the larger context window at 1M.

## Model Snapshot

| Property | Claude Haiku 4.5 | Claude Opus 4.8 |
|----------|----------|----------|
| Creator | Anthropic | Anthropic |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 200K | 1M |
| Overall Score | 41.47 | 69.12 |
| Benchmarks Covered | 10 | 40 |
| Pricing (input/output) | $1.00 / $5.00 | $5.00 / $25.00 |

## Category Breakdown

### Agentic

- Winner: Claude Opus 4.8
- Claude Haiku 4.5 public-lane score: 21.8 (Supported · #102/123)
- Claude Opus 4.8 public-lane score: 61.6 (Supported · #20/123)

| Benchmark | Claude Haiku 4.5 | Claude Opus 4.8 | Winner |
|-----------|-----------|-----------|--------|
| JobBench | 16.0% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 43.8% | 71.9% | Claude Opus 4.8 |
| 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 |
| OSWorld-Verified | Coming soon | 83.4% | Coming soon |
| Finance Agent v2 | Coming soon | 53.9% | Coming soon |
| MCP Atlas | Coming soon | 82.2% | Coming soon |
| Toolathlon | Coming soon | 59.9% | Coming soon |
| Gert Labs | Coming soon | 72.97% | Coming soon |
| ResearchClawBench | Coming soon | 21.1% | Coming soon |
| OSWorld 2.0 | Coming soon | 20.6% | Coming soon |

### Coding

- Winner: Claude Opus 4.8
- Claude Haiku 4.5 public-lane score: 18.3 (Supported · #121/146)
- Claude Opus 4.8 public-lane score: 60.8 (Supported · #19/146)

| Benchmark | Claude Haiku 4.5 | Claude Opus 4.8 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 73.3% | 88.6% | Claude Opus 4.8 |
| VulcanBench v3 | 76.2% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 41.2% | 87.8% | Claude Opus 4.8 |
| SWE-bench (Vals) | 66.6% | 88.6% | Claude Opus 4.8 |
| SWE-bench Pro | Coming soon | 69.2% | Coming soon |
| SWE Multilingual | Coming soon | 84.4% | 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 |
| PostTrainBench v1.1 | Coming soon | 32.9% | Coming soon |

### Reasoning

- Winner: Not comparable
- Claude Haiku 4.5 public-lane score: Coming soon
- Claude Opus 4.8 public-lane score: 62.9 (#24/28)

| Benchmark | Claude Haiku 4.5 | Claude Opus 4.8 | Winner |
|-----------|-----------|-----------|--------|
| 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: Not comparable
- Claude Haiku 4.5 public-lane score: Coming soon
- Claude Opus 4.8 public-lane score: 91.2 (#5/54)

| Benchmark | Claude Haiku 4.5 | Claude Opus 4.8 | Winner |
|-----------|-----------|-----------|--------|
| OfficeQA Pro | Coming soon | 66.2% | Coming soon |
| ScreenSpot Pro | Coming soon | 87.9% | Coming soon |
| CharXiv | Coming soon | 89.9% | Coming soon |
| CharXiv w/o tools | Coming soon | 80.5% | Coming soon |

### Knowledge

- Winner: Directional only
- Claude Haiku 4.5 public-lane score: 36 (Estimated · #126/177)
- Claude Opus 4.8 public-lane score: 70.7 (Supported · #14/177)

| Benchmark | Claude Haiku 4.5 | Claude Opus 4.8 | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 72.2% | 92.4% | Claude Opus 4.8 |
| MMLU-Pro (Vals) | 78.7% | 89.6% | Claude Opus 4.8 |
| GPQA | Coming soon | 93.6% | Coming soon |
| GPQA-D | Coming soon | 93.6% | Coming soon |
| HLE | Coming soon | 57.9% | Coming soon |
| HLE w/o tools | Coming soon | 49.8% | Coming soon |

### Multilingual

- Winner: Not comparable
- Claude Haiku 4.5 public-lane score: Coming soon
- Claude Opus 4.8 public-lane score: Coming soon

| Benchmark | Claude Haiku 4.5 | Claude Opus 4.8 | Winner |
|-----------|-----------|-----------|--------|
| INCLUDE | Coming soon | 87.6% | Coming soon |

### Instruction Following

- Winner: Not comparable
- Claude Haiku 4.5 public-lane score: Coming soon
- Claude Opus 4.8 public-lane score: 75.4 (#61/127)

### Mathematics

- Winner: Not comparable
- Claude Haiku 4.5 public-lane score: 29.3 (Unranked · 2 rankable rows)
- Claude Opus 4.8 public-lane score: 65.7 (#2/7)

| Benchmark | Claude Haiku 4.5 | Claude Opus 4.8 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 5.903% | 47.241% | Claude Opus 4.8 |
| FrontierMath v2 (Tier 4) | 2.083% | 31.250% | Claude Opus 4.8 |
| USAMO 2026 | Coming soon | 96.7% | Coming soon |

## FAQ

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

Claude Opus 4.8 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

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

The widest category gap is in coding, where the averages are 18.3 for Claude Haiku 4.5 and 60.8 for Claude Opus 4.8.

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

Claude Haiku 4.5 currently has 10 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 Haiku 4.5 vs Claude Haiku 4.5 Thinking](/compare/claude-haiku-4-5-vs-claude-haiku-4-5-thinking)
- [Claude Opus 4.8 vs Claude Haiku 4.5 Thinking](/compare/claude-haiku-4-5-thinking-vs-claude-opus-4-8)
- [Claude Haiku 4.5 vs Claude Opus 5.5](/compare/claude-haiku-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 Haiku 4.5 profile](/models/claude-haiku-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)