Laguna S 2.1 (Poolside)
Use it free in free-pi
free preview, rate-limited · free, then ~0.6x usage
npx free-pi-cli
/model laguna-s-2.1About Laguna S 2.1
Laguna S 2.1 is the latest coding agent model from Poolside. It has 118B total parameters with 8B active, and Poolside reports that it scores 70.2% on Terminal-Bench 2.1. It became available in July 2026.
The model takes text in and produces text. The stats above show its current context window and maximum output. It supports reasoning and tool calling. With tool calling, the free-pi agent can read and edit files, run commands, and use free-pi's built-in web search and documentation lookup tools.
In free-pi it is currently a free preview and is rate-limited, so you may hit limits when you use it heavily. It is free to use with no API key and no card, and it costs nothing against your allowance during the preview. After the preview it is expected to count as about 0.6x usage.
When to pick it
To try a model built specifically as a coding agent while it is free, pick Laguna S 2.1. It takes text only, so for tasks with images pick another model such as GLM-5.3 Flash.
If you get blocked by the preview's rate limit mid-task, pick the default DeepSeek V4 Flash to keep going.