# Laguna S 2.1 (free): AI model fact sheet

- **Provider:** poolside
- **Released:** 2026-07-21
- **Context window:** 262,144 tokens
- **API pricing:** $0.000 / 1M input, $0.000 / 1M output
- **OpenRouter ID:** poolside/laguna-s-2.1:free
- **Capabilities:** conversation, reasoning, code-generation, tool-use

Poolside open-weight coding model with 118B total and 8B active parameters, designed for software engineering and agent workflows. This free OpenRouter endpoint exposes a 262K context window.

Source: real side-by-side outputs, pricing and specs at https://rival.tips/models/laguna-s-2.1-free