# Laguna S 2.1 is now available on AI Gateway

> Source: <https://vercel.com/changelog/laguna-s-2-1-is-now-available-on-ai-gateway>
> Published: 2026-07-21 00:00:00+00:00

[Laguna S 2.1 from Poolside](https://vercel.com/ai-gateway/models/laguna-s-2.1) is now available on AI Gateway. There are 2 versions of the model available:

Free version: `poolside/laguna-s-2.1-free`

Paid version for higher throughput and higher rate limits: `poolside/laguna-s-2.1`

Laguna S 2.1 is an open-weight Mixture-of-Experts model that supports a context window of up to 1M tokens and runs in thinking and no-thinking modes.

The model specializes in agentic coding and long-running tasks, including writing and debugging code, running tests, building browser-based tooling, and working on MLOps pipelines and AI research. In thinking mode, Poolside reports 70.2% on Terminal-Bench 2.1, 78.5% on SWE-bench Multilingual, and 59.4% on SWE-Bench Pro.

To use Laguna S 2.1, set `model`

to `poolside/laguna-s-2.1-free`

or `poolside/laguna-s-2.1`

in the [AI SDK](https://ai-sdk.dev/):

AI Gateway provides a unified API for calling models, tracking usage and cost, and configuring retries, failover, and performance optimizations for higher-than-provider uptime. It includes built-in [custom reporting](https://vercel.com/changelog/custom-reporting-ai-gateway), [Zero Data Retention support](https://vercel.com/blog/zdr-on-ai-gateway), [budgets for API keys](https://vercel.com/docs/ai-gateway/authentication-and-byok/api-keys), [routing rules](https://vercel.com/docs/ai-gateway/models-and-providers/routing-rules), and more.

AI Gateway reflects provider pricing with no markup and does not charge a platform fee on inference, including on [Bring Your Own Key](https://vercel.com/docs/ai-gateway/authentication-and-byok/byok) (BYOK) requests.

Try Laguna S 2.1 in the [model playground](https://vercel.com/ai-gateway/models/laguna-s-2.1-free).