Laguna XS 2.1 (Reasoning)
by Poolside
Laguna XS 2.1 (Reasoning) is a reasoning model from Poolside, released on July 2, 2026. It has a 262K-token context window. API pricing is $0.1 per 1M input tokens and $0.2 per 1M output tokens. It ranks #105 of 220 models by Intelligence Score with a score of 24.3.
Laguna XS 2.1 is Poolside's open-weight Mixture-of-Experts coding model with 33B total parameters and 3B activated per token (256 experts + 1 shared; 40 layers). It targets agentic coding and long-horizon local work, with interleaved thinking, a 262,144-token context window, and text-to-text only modalities. Available as open weights on Hugging Face and via Poolside's API and OpenRouter (poolside/laguna-xs-2.1).
Key specs
| Provider | Poolside |
|---|---|
| Release date | 2026-07-02 |
| License | open weights |
| Context window | 262K tokens |
| Input price | $0.1 / 1M tokens |
| Output price | $0.2 / 1M tokens |
| Intelligence Score | 24.3 |
| Coding index | 14.5 |
Quick answers
What is the context window of Laguna XS 2.1 (Reasoning)?
Laguna XS 2.1 (Reasoning) has a context window of 262K tokens.
How much does Laguna XS 2.1 (Reasoning) cost?
Laguna XS 2.1 (Reasoning) costs $0.1 per 1M input tokens and $0.2 per 1M output tokens through the API.
Is Laguna XS 2.1 (Reasoning) open source?
Yes. Laguna XS 2.1 (Reasoning) is an open model released under the open weights license.
When was Laguna XS 2.1 (Reasoning) released?
Poolside released Laguna XS 2.1 (Reasoning) on July 2, 2026.
How does Laguna XS 2.1 (Reasoning) compare to Claude Opus 5.5 (Reasoning)?
Laguna XS 2.1 (Reasoning) scores 24.3 on the Intelligence Score versus 60.5 for Claude Opus 5.5 (Reasoning), the current #1. Input pricing is $0.1 vs $4 per 1M tokens.
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