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Model comparison

Claude 3.5 Sonnet vs Laguna XS.2

Data verified

Head-to-head evidence from 1 shared benchmark result across 1 category. Overall scores shown here use the public BenchAlign v5 ranking lane.

46.9/100
No comparison
Laguna XS.2
Poolside
N/A
0 category wins1 category wins

Public leaderboard positions: Claude 3.5 Sonnet #139 (Estimated); Laguna XS.2 unranked (Not scored). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.

Evidence parity. Claude 3.5 Sonnet and Laguna XS.2 share 1 comparable benchmark result. 1 of 8 categories are comparable. 3 results are unique to Claude 3.5 Sonnet; 4 to Laguna XS.2.

Updated July 27, 2026
Shared results
1
Claude 3.5 Sonnet only
3
Laguna XS.2 only
4
Comparable categories
1 / 8

Treat this as a split decision. Claude 3.5 Sonnet makes more sense if you would rather avoid the extra latency and token burn of a reasoning model; Laguna XS.2 is the better fit if coding is the priority or you want the cheaper token bill.

Confidence note. This is a partial-evidence comparison with 1 shared benchmark result across 1 evidence category; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.

Why this result

Claude 3.5 Sonnet 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 3.5 Sonnet is also the more expensive model on tokens at $3.00 input / $15.00 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. Laguna XS.2 is the reasoning model in the pair, while Claude 3.5 Sonnet is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. Laguna XS.2 gives you the larger context window at 256K, compared with 200K for Claude 3.5 Sonnet.

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 scores and score margins for Claude 3.5 Sonnet and Laguna XS.2
CategoryClaude 3.5 SonnetΔLaguna XS.2
CodingClaude 3.5 Sonnet49.0Margin→ 11.8Laguna XS.260.8
AgenticClaude 3.5 SonnetNot measuredMarginNo overlapLaguna XS.235.7
KnowledgeClaude 3.5 Sonnet59.4MarginNo overlapLaguna XS.2Not measured
MathClaude 3.5 Sonnet1.6MarginNo overlapLaguna XS.2Not measured

Decisive benchmark drivers

The largest measured benchmark gaps in this matchup, with exact reported values.

More
A · Claude 3.5 SonnetB · Laguna XS.2

  1. SWE-bench Verified

    Coding
    Source ↗
    A 49%B 69.9%
    Winner: Laguna XS.2Δ 20.9
    SWE-bench Verified: Claude 3.5 Sonnet scored 49%; Laguna XS.2 scored 69.9%. Laguna XS.2 wins this benchmark.

Operational comparison

Runtime and commercial metrics are compared only when both models have a complete sourced value.

MetricClaude 3.5 SonnetLaguna XS.2Comparison
Input / output priceUSD per 1M tokensClaude 3.5 Sonnet$3 input / $15 outputLaguna XS.2$0 input / $0 outputLaguna XS.2 has the lower combined listed price.
Generation speedtokens per secondClaude 3.5 SonnetNot availableLaguna XS.2Not availableA complete speed comparison is not available.
First-answer latencyseconds to first tokenClaude 3.5 SonnetNot availableLaguna XS.2Not availableA complete latency comparison is not available.
Context windowmaximum listed tokensClaude 3.5 Sonnet200KLaguna XS.2256KLaguna XS.2 lists the larger context window.

Benchmark Deep Dive

Agentic
BenchmarkClaude 3.5 SonnetLaguna XS.2Result
Terminal-Bench 2.0Source —35.7%Not comparable
CodingLaguna XS.2 wins
BenchmarkClaude 3.5 SonnetLaguna XS.2Result
SWE-bench VerifiedSource 49%69.9%Laguna XS.2 leads
SWE MultilingualSource —57.7%Not comparable
SWE-bench ProSource —46.3%Not comparable
Terminal-Bench 2.0Source —35.7%Not comparable
Knowledge
BenchmarkClaude 3.5 SonnetLaguna XS.2Result
GPQASource 59.4%—Not comparable
Math
BenchmarkClaude 3.5 SonnetLaguna XS.2Result
FrontierMath v2 (Tiers 1-3)Source 2.069%—Not comparable
FrontierMath v2 (Tier 4)Source 0.000%—Not comparable
Frequently Asked Questions (2)

Which is better, Claude 3.5 Sonnet or Laguna XS.2?

Claude 3.5 Sonnet 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 3.5 Sonnet or Laguna XS.2?

Laguna XS.2 has the edge for coding in this comparison, averaging 60.8 versus 49. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.

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