Poolside: Laguna S 2.1
Laguna S 2.1 is a reasoning model from Poolside released on Jul 21, 2026. It reads text and writes text, with a 1.05M token context window and up to 33K tokens per reply.
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It costs $0.10 per million input tokens and $0.20 per million output tokens. Cached input bills at $0.01, 90% less than fresh input.
It supports tool calling and prompt caching, and its weights are open, so you can host it yourself.
6 providers serve it, including Vercel AI Gateway, Vultr and NanoGPT. The lowest input price is $0.09 per million tokens at Vultr.
- Modalities
- In / out price
- $0.10 / $0.20 per 1M
- Context
- 1.05M
- Max output
- 33K
- Released
- Jul 21, 2026
- Knowledge cutoff
- n/a
- Tool calling
- Structured output
- Reasoning
- Prompt caching
- Open weights
- Free to use
Laguna S 2.1 pricing
USD, as listed on Oct 15, 2026. Most bills are input heavy, so the cached input rate matters as much as the headline price.
| Input | $0.10 / 1M tokens | |
|---|---|---|
| Output | $0.20 / 1M tokens | |
| Cached input (read) | $0.01 / 1M tokens | 90% off input |
Laguna S 2.1 providers
6 providers serve it, including Vercel AI Gateway, Vultr and NanoGPT. The lowest input price is $0.09 per million tokens at Vultr. Each host sets its own price and limits, so the cheapest one is not always the one with the longest context.
| Provider | Input /M | Output /M | Cache read /M | Context | Max output |
|---|---|---|---|---|---|
| Poolside First party | $0 | $0 | $0 | 1.05M | 33K |
| Vercel AI Gateway | n/a | n/a | – | 256K | 33K |
| Vultr | $0.09 | $0.18 | – | 1.05M | 33K |
| NanoGPT | $0.10 | $0.20 | $0.01 | 1.05M | 131K |
| Pioneer | $0.10 | $0.20 | $0.01 | 1M | 131K |
| Kilo Gateway | n/a | n/a | – | 262K | 33K |
What Laguna S 2.1 costs per month
Pick a workload close to yours or type your own volumes.
Supported request parameters
What you can set when you call Laguna S 2.1 through an OpenAI compatible API.
- Tools
tools - Reasoning
reasoning - Temperature
temperature
Alternatives to Laguna S 2.1
Models that take the same inputs and call tools, closest in price, cheaper ones first.
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Laguna S 2.1 questions
How much does the Laguna S 2.1 API cost?
$0.10 per million input tokens and $0.20 per million output tokens, with cached input at $0.01. The estimator on this page turns that into a monthly bill for your own workload.
What is the context window of Laguna S 2.1?
1,048,576 tokens of input, and it can write up to 32,768 tokens in one reply. As a rough guide, a million tokens is around 750,000 English words.
Which providers serve Laguna S 2.1?
6 providers serve it, including Vercel AI Gateway, Vultr and NanoGPT. The lowest input price is $0.09 per million tokens at Vultr. Prices differ by host, so the Providers table on this page lists each one with its input and output price.
Does Laguna S 2.1 support tool calling?
Yes. It accepts tool definitions, which is what an agent needs to call your APIs.
Is Laguna S 2.1 open source?
Its weights are published, so you can run it on your own hardware or a cloud of your choice. Read the license before commercial use.
When was Laguna S 2.1 released?
Jul 21, 2026.
Catalog data from models.dev (MIT licensed), refreshed daily, last on Oct 15, 2026. The summary is written from these facts.
Building on Laguna S 2.1?
I test your real tasks on it and the two closest alternatives, then ship the agent on whichever wins on cost and accuracy.
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