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Laguna XS.2

ECI
N/A
Poolside
Apr. 28, 2026
Open weights

Laguna XS.2 is an open-weights model from Poolside, released April 28, 2026.

Laguna XS.2 vs select alternatives

DomainBenchmark
Laguna XS.2
Poolside
Apr. 28, 2026
Open weights
GPT-5.5 Pro
OpenAI
Apr. 23, 2026
Closed weights
Claude Opus 4.7
Anthropic
Apr. 16, 2026
Closed weights
Gemini 3.1 Pro
Google DeepMind
Feb. 19, 2026
Closed weights
Mathematics
ProofBenchBest score 100%
0%
n/a
54%
26%
Software engineering
Text Arena (Coding)Best score 1820
1302—15671447

Model metadata

General
OrganizationPoolside
Release dateApr. 28, 2026
Model accessibilityOpen weights
CountryUnited States of America
Knowledge cutoffUnknown
Provider notesUnknown
Pricing
Input price—
Output price—
Training
Parameters3.3e10
Training computeUnknown
Training hardwareUnknown
Training timeUnknown
Training dataset sizeUnknown