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Model comparison

Laguna S 2.1 vs Laguna XS.2

Data verified

Head-to-head evidence from 4 shared benchmark results across 2 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.

Sibling matchup inside the Laguna family.

Laguna S 2.1
Poolside
N/A
No comparison
Laguna XS.2
Poolside
N/A
1 category wins1 category wins

Evidence parity. Laguna S 2.1 and Laguna XS.2 share 4 comparable benchmark results. 2 of 8 categories are comparable. 2 results are unique to Laguna S 2.1; 1 to Laguna XS.2.

Updated July 21, 2026
Shared results
4
Laguna S 2.1 only
2
Laguna XS.2 only
1
Comparable categories
2 / 8

Laguna S 2.1 makes more sense if agentic is the priority or you need the larger 1M context window, while Laguna XS.2 is the cleaner fit if coding is the priority or you want the cheaper token bill.

Confidence note. This is a partial-evidence comparison with 4 shared benchmark results across 2 evidence categories; 2 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.

Why this result

Laguna S 2.1 and Laguna XS.2 sit in the same Laguna family. This page is less about two unrelated model lineages and more about how the siblings trade off on benchmark shape, token costs, and practical limits like context window.

Laguna S 2.1 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.

Laguna S 2.1 is also the more expensive model on tokens at $0.10 input / $0.20 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 S 2.1 gives you the larger context window at 1M, compared with 256K for Laguna XS.2.

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 Laguna S 2.1 and Laguna XS.2
CategoryLaguna S 2.1ΔLaguna XS.2
AgenticLaguna S 2.170.2Margin← 34.5Laguna XS.235.7
CodingLaguna S 2.159.4Margin→ 1.4Laguna XS.260.8

Decisive benchmark drivers

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

More
A · Laguna S 2.1B · Laguna XS.2

  1. Terminal-Bench 2.0

    Agentic
    Source ↗
    A 70.2%B 35.7%
    Winner: Laguna S 2.1Δ 34.5
    Terminal-Bench 2.0: Laguna S 2.1 scored 70.2%; Laguna XS.2 scored 35.7%. Laguna S 2.1 wins this benchmark.

  2. SWE-bench Pro

    Coding
    Source ↗
    A 59.4%B 46.3%
    Winner: Laguna S 2.1Δ 13.1
    SWE-bench Pro: Laguna S 2.1 scored 59.4%; Laguna XS.2 scored 46.3%. Laguna S 2.1 wins this benchmark.

Operational comparison

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

MetricLaguna S 2.1Laguna XS.2Comparison
Input / output priceUSD per 1M tokensLaguna S 2.1$0.1 input / $0.2 outputLaguna XS.2$0 input / $0 outputLaguna XS.2 has the lower combined listed price.
Generation speedtokens per secondLaguna S 2.1Not availableLaguna XS.2Not availableA complete speed comparison is not available.
First-answer latencyseconds to first tokenLaguna S 2.1Not availableLaguna XS.2Not availableA complete latency comparison is not available.
Context windowmaximum listed tokensLaguna S 2.11MLaguna XS.2256KLaguna S 2.1 lists the larger context window.

Benchmark Deep Dive

AgenticLaguna S 2.1 wins
BenchmarkLaguna S 2.1Laguna XS.2Result
Terminal-Bench 2.0Source 70.2%35.7%Laguna S 2.1 leads
Toolathlon-VerifiedSource 49.7%—Not comparable
CodingLaguna XS.2 wins
BenchmarkLaguna S 2.1Laguna XS.2Result
Terminal-Bench 2.0Source 70.2%35.7%Laguna S 2.1 leads
SWE MultilingualSource 78.5%57.7%Laguna S 2.1 leads
SWE-bench ProSource 59.4%46.3%Laguna S 2.1 leads
deepSweSource 40.4%—Not comparable
SWE-bench VerifiedSource —69.9%Not comparable
Frequently Asked Questions (3)

Which is better, Laguna S 2.1 or Laguna XS.2?

Laguna S 2.1 and Laguna XS.2 are sibling variants in the Laguna family, so the right pick depends on whether you value the better benchmark line, cheaper tokens, or the larger context window. They are tied on the BenchAlign leaderboard on the current data.

Which is better for coding, Laguna S 2.1 or Laguna XS.2?

Laguna XS.2 has the edge for coding in this comparison, averaging 60.8 versus 59.4. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, Laguna S 2.1 or Laguna XS.2?

Laguna S 2.1 has the edge for agentic tasks in this comparison, averaging 70.2 versus 35.7. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.

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Last updated: July 21, 2026

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