Model comparison
Claude Opus 5 vs Laguna XS.2
Head-to-head evidence from 3 shared benchmark results across 1 category. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Claude Opus 5 #1 (Estimated); Laguna XS.2 unranked (Not scored). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Claude Opus 5 and Laguna XS.2 share 3 comparable benchmark results. 2 of 8 categories are comparable. 76 results are unique to Claude Opus 5; 2 to Laguna XS.2.
Updated July 24, 2026- Shared results
- 3
- Claude Opus 5 only
- 76
- Laguna XS.2 only
- 2
- Comparable categories
- 2 / 8
Treat this as a split decision. Claude Opus 5 makes more sense if agentic is the priority; Laguna XS.2 is the better fit if you want the cheaper token bill.
Confidence note. This is a partial-evidence comparison with 3 shared benchmark results across 1 evidence category; 2 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
Claude Opus 5 and Laguna XS.2 finish on the same BenchAlign overall score, so this is less about a single winner and more about where the edge shows up. The BenchAlign headline says tie; the benchmark table is where the real choice happens.
Claude Opus 5 is also the more expensive model on tokens at $5.00 input / $25.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Laguna XS.2. That is roughly Infinityx on output cost alone.
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
| Category | Claude Opus 5 | Δ | Laguna XS.2 |
|---|---|---|---|
| Agentic | Claude Opus 590.8 | Margin← 55.1 | Laguna XS.235.7 |
| Coding | Claude Opus 589.5 | Margin← 28.7 | Laguna XS.260.8 |
| Reasoning | Claude Opus 590.4 | MarginNo overlap | Laguna XS.2Not measured |
| Knowledge | Claude Opus 564.7 | MarginNo overlap | Laguna XS.2Not measured |
| Multimodal | Claude Opus 566.9 | MarginNo overlap | Laguna XS.2Not measured |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
SWE-bench Pro
CodingA 79.2%B 46.3%Winner: Claude Opus 5Δ 32.9SWE-bench Pro: Claude Opus 5 scored 79.2%; Laguna XS.2 scored 46.3%. Claude Opus 5 wins this benchmark. - Source ↗
SWE-bench Verified
CodingA 96%B 69.9%Winner: Claude Opus 5Δ 26.1SWE-bench Verified: Claude Opus 5 scored 96%; Laguna XS.2 scored 69.9%. Claude Opus 5 wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Claude Opus 5 | Laguna XS.2 | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Claude Opus 5$5 input / $25 output | Laguna XS.2$0 input / $0 output | Laguna XS.2 has the lower combined listed price. |
| Generation speedtokens per second | Claude Opus 5Not available | Laguna XS.2Not available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Claude Opus 5Not available | Laguna XS.2Not available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Claude Opus 5Not available | Laguna XS.2256K | A complete context comparison is not available. |
Benchmark Deep Dive
AgenticClaude Opus 5 wins25 benchmarks
| Benchmark | Claude Opus 5 | Laguna XS.2 | Result |
|---|---|---|---|
| FrontierBench v0.1Source | 43.3% | — | Not comparable |
| BrowseCompSource | 90.8% | — | Not comparable |
| HLE w/ toolsSource | 64.7% | — | Not comparable |
| DeepSearchQASource | 95.0% | — | Not comparable |
| DRACOSource | 88.6% | — | Not comparable |
| BrowseComp (10-agent, prerelease)Source | 93.6% | — | Not comparable |
| OSWorld 2.0Source | 70.6% | — | Not comparable |
| MCP AtlasSource | 85.8% | — | Not comparable |
| MCP-Atlas claim coverageSource | 89.1% | — | Not comparable |
| LAB all-pass (Anthropic harness)Source | 23.58% | — | Not comparable |
| LAB criterion-pass (Anthropic harness)Source | 93.74% | — | Not comparable |
| LAB all-pass (Harvey held-out)Source | 11.7% | — | Not comparable |
| LAB criterion-pass (Harvey held-out)Source | 94.1% | — | Not comparable |
| GDPval-AASource | 1861 | — | Not comparable |
| Toolathlon-VerifiedSource | 80.6% | — | Not comparable |
| Toolathlon Verified Pass@3Source | 87.0% | — | Not comparable |
| Toolathlon Verified Pass³Source | 73.1% | — | Not comparable |
| Toolathlon Verified avg. turnsSource | 23.5 turns | — | Not comparable |
| AutomationBenchSource | 26.0% | — | Not comparable |
| AA Agentic IndexSource | 55.3% | — | Not comparable |
| GDPval-AASource | 68.0% | — | Not comparable |
| AA Tau3 BankingSource | 30.3% | — | Not comparable |
| AA BriefcaseSource | 1720 | — | Not comparable |
| aaTerminalBench21Source | 89.1% | — | Not comparable |
| Terminal-Bench 2.0Source | — | 35.7% | Not comparable |
CodingClaude Opus 5 wins13 benchmarks
| Benchmark | Claude Opus 5 | Laguna XS.2 | Result |
|---|---|---|---|
| SWE-bench VerifiedSource | 96% | 69.9% | Claude Opus 5 leads |
| SWE-bench ProSource | 79.2% | 46.3% | Claude Opus 5 leads |
| SWE MultilingualSource | 89.5% | 57.7% | Claude Opus 5 leads |
| SWE MultimodalSource | 59.4% | — | Not comparable |
| deepSweSource | 68.8% | — | Not comparable |
| FrontierCode 1.1 MainSource | 53.4% | — | Not comparable |
| FrontierCode 1.1 ExtendedSource | 63.6% | — | Not comparable |
| ProgramBench (episode 1)Source | 83.0% | — | Not comparable |
| ProgramBenchSource | 93.0% | — | Not comparable |
| cursorBench32Source | 70.0% | — | Not comparable |
| AA Coding IndexSource | 78.0% | — | Not comparable |
| AA-SciCodeSource | 55.7% | — | Not comparable |
| Terminal-Bench 2.0Source | — | 35.7% | Not comparable |
Reasoning5 benchmarks
Knowledge21 benchmarks
| Benchmark | Claude Opus 5 | Laguna XS.2 | Result |
|---|---|---|---|
| HLESource | 64.7% | — | Not comparable |
| HLE w/o toolsSource | 56.3% | — | Not comparable |
| HealthBench (raw)Source | 67.1% | — | Not comparable |
| HealthBench (length-adjusted)Source | 57.8% | — | Not comparable |
| HealthBench ProfessionalSource | 59.8% | — | Not comparable |
| HealthBench Professional (raw)Source | 73.4% | — | Not comparable |
| BioMysteryBench (human-solvable)Source | 90.1% | — | Not comparable |
| BioMysteryBench (human-difficult)Source | 49.4% | — | Not comparable |
| SpatialBench VerifiedSource | 72.5% | — | Not comparable |
| SingleCellBenchSource | 60.6% | — | Not comparable |
| ProteinGym HardSource | 47.7% | — | Not comparable |
| Protein DesignSource | 42.5% | — | Not comparable |
| Organic chemistry V2Source | 61.6% | — | Not comparable |
| Protocols (troubleshooting)Source | 61.1% | — | Not comparable |
| Protocols (understanding)Source | 78.4% | — | Not comparable |
| Artificial Analysis Intelligence IndexSource | 60.7% | — | Not comparable |
| AA-GPQA DiamondSource | 93.2% | — | Not comparable |
| AA-HLESource | 52.6% | — | Not comparable |
| AA-Omniscience IndexSource | 31.3% | — | Not comparable |
| AA-Omniscience AccuracySource | 54.2% | — | Not comparable |
| AA-Omniscience Hallucination RateSource | 50.1% | — | Not comparable |
Math5 benchmarks
Multilingual3 benchmarks
Multimodal9 benchmarks
| Benchmark | Claude Opus 5 | Laguna XS.2 | Result |
|---|---|---|---|
| Chartography (no tools)Source | 29.6% | — | Not comparable |
| Chartography (tools)Source | 83.0% | — | Not comparable |
| BenchCAD Vision2Code (no tools)Source | 0.366 | — | Not comparable |
| BenchCAD Vision2Code (tools)Source | 0.821 | — | Not comparable |
| GDP.pdf (no tools)Source | 83.4% | — | Not comparable |
| GDP.pdf (tools)Source | 85.5% | — | Not comparable |
| OfficeQASource | 78.1% | — | Not comparable |
| OfficeQA ProSource | 66.9% | — | Not comparable |
| AA-MMMU-ProSource | 84.7% | — | Not comparable |
Frequently Asked Questions (3)
Which is better, Claude Opus 5 or Laguna XS.2?
Claude Opus 5 and Laguna XS.2 are tied on the BenchAlign overall score, so the right pick depends on which category matters most for your use case.
Which is better for coding, Claude Opus 5 or Laguna XS.2?
Claude Opus 5 has the edge for coding in this comparison, averaging 89.5 versus 60.8. Inside this category, SWE-bench Pro is the benchmark that creates the most daylight between them.
Which is better for agentic tasks, Claude Opus 5 or Laguna XS.2?
Claude Opus 5 has the edge for agentic tasks in this comparison, averaging 90.8 versus 35.7. Laguna XS.2 stays close enough that the answer can still flip depending on your workload.