Laguna S 2.1
Laguna S 2.1 is a language model from Poolside. It is currently free at 4 providers with up to 1M tokens of context. The model supports step-by-step reasoning, is suited to coding.
- Developer
- Poolside
- Context
- 1M tokens
- Type
- Text
Where to use Laguna S 2.1 for free
Each row is a separate free endpoint with its own limits.
| Provider | Context | Limit | Card | |
|---|---|---|---|---|
OpenRouter poolside/laguna-s-2.1:free |
262K | Free tier | No | Open |
Vercel AI Gateway poolside/laguna-s-2.1-free |
256K | A valid payment card must be on file even for zero-price models. Free promotions may change; availability is refreshed from the Models API. | Yes | Open |
Nous Portal poolside/laguna-s-2.1:free |
262K | The $0 Portal plan includes free models with standard rate limits. Model availability can change. | No | Open |
UnoRouter laguna-s-2.1:free |
1M | No-card free models use shared capacity and per-model limits; availability can change. | No | Open |
Quick start
curl https://openrouter.ai/api/v1/chat/completions \
-H "Authorization: Bearer $OPENROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "poolside/laguna-s-2.1:free",
"messages": [{"role": "user", "content": "Hello!"}]
}'from openai import OpenAI
client = OpenAI(
base_url="https://openrouter.ai/api/v1",
api_key="YOUR_OPENROUTER_API_KEY",
)
reply = client.chat.completions.create(
model="poolside/laguna-s-2.1:free",
messages=[{"role": "user", "content": "Hello!"}],
)
print(reply.choices[0].message.content)import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://openrouter.ai/api/v1",
apiKey: process.env.OPENROUTER_API_KEY,
});
const reply = await client.chat.completions.create({
model: "poolside/laguna-s-2.1:free",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(reply.choices[0].message.content);Example for OpenRouter. Any OpenAI-compatible client works: Cursor, Cline, OpenCode, Open WebUI.
Benchmarks
This model is not on the Artificial Analysis leaderboard yet. We do not publish our own estimates.
Similar free models
FAQ
Is Laguna S 2.1 free?
Yes. As of September 26, 2026, Laguna S 2.1 is free at OpenRouter, Vercel AI Gateway, Nous Portal, UnoRouter. Each provider has its own limits — see the table above.
What is the context window of Laguna S 2.1?
The largest context among free routes is 1,048,576 tokens. Some providers cap it lower.
How do I call Laguna S 2.1 via API?
Use any OpenAI-compatible client with base URL https://openrouter.ai/api/v1, model ID poolside/laguna-s-2.1:free, and a OpenRouter key.