# Claude Haiku 4.5 vs Laguna XS.2

> Side-by-side benchmark comparison for Claude Haiku 4.5 and Laguna XS.2 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-haiku-4-5-vs-laguna-xs-2
- Last updated: September 10, 2026

- Shared sourced benchmarks: 6
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Claude Haiku 4.5 if you want the stronger benchmark profile. Laguna XS.2 only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Claude Haiku 4.5 leads overall 52.79 to 1.53.
- The clearest category separation is in knowledge, where the averages are 44.2 for Claude Haiku 4.5 and 17.7 for Laguna XS.2.
- The biggest single benchmark swing is LiveCodeBench (Vals) in Coding, with scores of 41.2% and 67.8%.
- Laguna XS.2 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Laguna XS.2 also has the larger context window at 256K.

## Model Snapshot

| Property | Claude Haiku 4.5 | Laguna XS.2 |
|----------|----------|----------|
| Creator | Anthropic | Poolside |
| Type | Proprietary | Open Weight |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 200K | 256K |
| Overall Score | 52.79 | 1.53 |
| Benchmarks Covered | 10 | 10 |
| Pricing (input/output) | $1.00 / $5.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- Claude Haiku 4.5 public-lane score: 27 (Supported · #142/152)
- Laguna XS.2 public-lane score: 22.4 (Estimated · #149/152)

| Benchmark | Claude Haiku 4.5 | Laguna XS.2 | Winner |
|-----------|-----------|-----------|--------|
| JobBench | 16.0% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 43.8% | 25.8% | Claude Haiku 4.5 |
| Terminal-Bench 2.0 | Coming soon | 35.7% | Coming soon |

### Coding

- Winner: Claude Haiku 4.5
- Claude Haiku 4.5 public-lane score: 27.2 (Supported · #144/151)
- Laguna XS.2 public-lane score: 24.7 (Supported · #148/151)

| Benchmark | Claude Haiku 4.5 | Laguna XS.2 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 73.3% | 69.9% | Claude Haiku 4.5 |
| VulcanBench v3 | 76.2% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 41.2% | 67.8% | Laguna XS.2 |
| SWE-bench (Vals) | 66.6% | 55.2% | Claude Haiku 4.5 |
| SWE Multilingual | Coming soon | 57.7% | Coming soon |
| SWE-bench Pro | Coming soon | 46.3% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 35.7% | Coming soon |

### Knowledge

- Winner: Coming soon
- Claude Haiku 4.5 public-lane score: 44.2 (Estimated · #115/183)
- Laguna XS.2 public-lane score: 17.7 (Estimated · #183/183)

| Benchmark | Claude Haiku 4.5 | Laguna XS.2 | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 72.2% | 55.1% | Claude Haiku 4.5 |
| MMLU-Pro (Vals) | 78.7% | 69.1% | Claude Haiku 4.5 |

### Mathematics

- Winner: Coming soon
- Claude Haiku 4.5 public-lane score: 28.9 (Unranked · 2 rankable rows)
- Laguna XS.2 public-lane score: Coming soon

| Benchmark | Claude Haiku 4.5 | Laguna XS.2 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 5.903% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 2.083% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Claude Haiku 4.5 or Laguna XS.2?

Claude Haiku 4.5 is ahead overall on BenchLM right now.

### Where is the biggest gap between Claude Haiku 4.5 and Laguna XS.2?

The widest category gap is in knowledge, where the averages are 44.2 for Claude Haiku 4.5 and 17.7 for Laguna XS.2.

### 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 Laguna XS.2 cover on BenchLM?

Laguna XS.2 currently has 10 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)
- [Laguna XS.2 vs Claude Haiku 4.5 Thinking](/compare/claude-haiku-4-5-thinking-vs-laguna-xs-2)
- [Claude Haiku 4.5 vs Laguna M.1](/compare/claude-haiku-4-5-vs-laguna-m-1)
- [Laguna XS.2 vs Laguna M.1](/compare/laguna-m-1-vs-laguna-xs-2)

## Explore More

- [Claude Haiku 4.5 profile](/models/claude-haiku-4-5)
- [Laguna XS.2 profile](/models/laguna-xs-2)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)