Laguna S 2.1 (free)
Summary
Laguna S 2.1 (free) is an open-weight language model from Poolside, released on 21 Jul 2026. It accepts text and generates text, with a 262K-token context window and up to 33K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $0.09 per million input tokens and $0.18 per million output tokens (OpenRouter), across 2 providers we track. It is scheduled for retirement on 31 Oct 2026.
Free provider route for experiments, demos, and cost-sensitive chat workloads
Last verified 4 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | Poolside |
|---|---|
| Release date | 21 Jul 2026 [models.dev] |
| Status | Generally available [models.dev] |
| Weights | Open weights [Hugging Face] |
| License | openmdw-1.1 [Hugging Face] |
| Parameters | 118B [Hugging Face] |
| Context window | 262K (262,144 tokens) [models.dev] |
| Max output | 33K tokens [models.dev] |
| Input | Text [models.dev] |
| Output | Text [models.dev] |
| Reasoning mode | Yes [models.dev] |
| Tool calling | Yes [models.dev] |
| Structured output | No [models.dev] |
| Retirement date | 31 Oct 2026 [OpenRouter] |
| Hugging Face | poolside/Laguna-S-2.1 [Hugging Face] |
Laguna S 2.1 (free) API pricing by provider
USD per million tokens. Sorted by input price.
| Provider | Input | Output | Cached input | Context | Source |
|---|---|---|---|---|---|
| Vercel AI Gateway poolside/laguna-s-2.1-free | Free | Free | – | 256K | models.dev, 4 Oct 2026 |
| OpenRouter poolside/laguna-s-2.1 | $0.09 | $0.18 | $0.009 | 1M | OpenRouter, 4 Oct 2026 |
| Vercel AI Gateway poolside/laguna-s-2.1 | $0.10 | $0.20 | $0.01 | 1M | models.dev, 4 Oct 2026 |
Frequently asked questions
What is the context window of Laguna S 2.1 (free)?
Laguna S 2.1 (free) has a context window of 262,144 tokens (262K) and can generate up to 32,768 tokens in a single response, according to models.dev.
How much does the Laguna S 2.1 (free) API cost?
Laguna S 2.1 (free) is listed from $0.09 per million input tokens and $0.18 per million output tokens (OpenRouter). Prices last verified 4 Oct 2026.
Is Laguna S 2.1 (free) open source?
Laguna S 2.1 (free) is an open-weight model: its weights are published on Hugging Face as poolside/Laguna-S-2.1 under the openmdw-1.1 license. Check the license terms before commercial use.
When was Laguna S 2.1 (free) released?
Poolside released Laguna S 2.1 (free) on 21 Jul 2026, according to models.dev.
Which providers offer Laguna S 2.1 (free)?
We track Laguna S 2.1 (free) on 2 providers: Vercel AI Gateway, OpenRouter.
Change history
No changes detected since we started tracking this model. We re-check every source daily.
Sources
- https://openrouter.ai/poolside/laguna-s-2.1
- https://github.com/sst/models.dev/blob/dev/providers/openrouter/models/poolside/laguna-s-2.1:free.toml
- https://huggingface.co/poolside/Laguna-S-2.1
- https://github.com/sst/models.dev/blob/dev/providers/vercel/models/poolside/laguna-s-2.1-free.toml
- https://github.com/sst/models.dev/blob/dev/providers/vercel/models/poolside/laguna-s-2.1.toml