Model comparison

Grok 4.20 vs Laguna XS.2

Data verified July 27, 2026

Head-to-head evidence from 3 shared benchmark results across 2 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.

Grok 4.20

xAI

53.88/100

No comparison

Laguna XS.2

Poolside

N/A

2 category wins0 category wins

Public leaderboard positions: Grok 4.20 #93 (Estimated); Laguna XS.2 unranked (Not scored). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.

Evidence parity. Grok 4.20 and Laguna XS.2 share 3 comparable benchmark results. 2 of 8 categories are comparable. 16 results are unique to Grok 4.20; 2 to Laguna XS.2.

Updated July 27, 2026

Shared results: 3
Grok 4.20 only: 16
Laguna XS.2 only: 2
Comparable categories: 2 / 8

Treat this as a split decision. Grok 4.20 makes more sense if agentic is the priority or you need the larger 2M context window; 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 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

Grok 4.20 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.

Grok 4.20 is also the more expensive model on tokens at $2.00 input / $6.00 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. Grok 4.20 gives you the larger context window at 2M, 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 Grok 4.20 and Laguna XS.2
Category	Grok 4.20	Δ	Laguna XS.2
Agentic	Grok 4.2047.1	Margin← 11.4	Laguna XS.235.7
Coding	Grok 4.2067.1	Margin← 6.3	Laguna XS.260.8
Reasoning	Grok 4.2053.3	MarginNo overlap	Laguna XS.2Not measured
Multimodal	Grok 4.2070.1	MarginNo overlap	Laguna XS.2Not measured

Decisive benchmark drivers

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

A · Grok 4.20B · Laguna XS.2

Terminal-Bench 2.0
Agentic
Source ↗
A 47.1%B 35.7%
Winner: Grok 4.20Δ 11.4
Terminal-Bench 2.0: Grok 4.20 scored 47.1%; Laguna XS.2 scored 35.7%. Grok 4.20 wins this benchmark.
SWE-bench Verified
Coding
Source ↗
A 76.7%B 69.9%
Winner: Grok 4.20Δ 6.8
SWE-bench Verified: Grok 4.20 scored 76.7%; Laguna XS.2 scored 69.9%. Grok 4.20 wins this benchmark.
SWE-bench Pro
Coding
Source ↗
A 51.8%B 46.3%
Winner: Grok 4.20Δ 5.5
SWE-bench Pro: Grok 4.20 scored 51.8%; Laguna XS.2 scored 46.3%. Grok 4.20 wins this benchmark.

Operational comparison

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

Metric	Grok 4.20	Laguna XS.2	Comparison
Input / output priceUSD per 1M tokens	Grok 4.20$2 input / $6 output	Laguna XS.2$0 input / $0 output	Laguna XS.2 has the lower combined listed price.
Generation speedtokens per second	Grok 4.20233 tok/s	Laguna XS.2Not available	A complete speed comparison is not available.
First-answer latencyseconds to first token	Grok 4.2010.33 s	Laguna XS.2Not available	A complete latency comparison is not available.
Context windowmaximum listed tokens	Grok 4.202M	Laguna XS.2256K	Grok 4.20 lists the larger context window.

Benchmark Deep Dive

AgenticGrok 4.20 wins

3 benchmarks

Benchmark	Grok 4.20	Laguna XS.2	Result
Terminal-Bench 2.0Source	47.1%	35.7%	Grok 4.20 leads
DeepSearchQASource	62.8%	—	Not comparable
Gert LabsSource	38.36%	—	Not comparable

CodingGrok 4.20 wins

6 benchmarks

Benchmark	Grok 4.20	Laguna XS.2	Result
LiveCodeBench ProSource	74.2%	—	Not comparable
SWE-bench VerifiedSource	76.7%	69.9%	Grok 4.20 leads
SWE-bench ProSource	51.8%	46.3%	Grok 4.20 leads
Vibe Code BenchSource	4.06%	—	Not comparable
SWE MultilingualSource	—	57.7%	Not comparable
Terminal-Bench 2.0Source	—	35.7%	Not comparable

Reasoning

2 benchmarks

Benchmark	Grok 4.20	Laguna XS.2	Result
ARC-AGI-2Source	53.3%	—	Not comparable
ARC-AGI-3Source	0.1%	—	Not comparable

Knowledge

4 benchmarks

Benchmark	Grok 4.20	Laguna XS.2	Result
GPQA-DSource	88.5%	—	Not comparable
HLE w/o toolsSource	31.6%	—	Not comparable
HealthBench HardSource	20.3%	—	Not comparable
MedXpertQA (Text)Source	50.2%	—	Not comparable

Multimodal

6 benchmarks

Benchmark	Grok 4.20	Laguna XS.2	Result
MMMU-ProSource	75.2%	—	Not comparable
CharXivSource	60.9%	—	Not comparable
ERQASource	54.1%	—	Not comparable
SimpleVQASource	57.4%	—	Not comparable
MedXpertQA (MM)Source	65.8%	—	Not comparable
Design Arena WebsiteSource	1252	—	Not comparable

Frequently Asked Questions (3)

Which is better, Grok 4.20 or Laguna XS.2?

Grok 4.20 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, Grok 4.20 or Laguna XS.2?

Grok 4.20 has the edge for coding in this comparison, averaging 67.1 versus 60.8. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, Grok 4.20 or Laguna XS.2?

Grok 4.20 has the edge for agentic tasks in this comparison, averaging 47.1 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 27, 2026

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