Overview
Laguna XS 2.1 is the latest coding agent model in the 33B-A3B category from [Poolside](https://poolside.ai/) and a step forward from their Laguna XS.2 model (released in April 2026). It combines...
How Poolside: Laguna XS 2.1 (free) stacks up
Among the 342 chatbots & llms tools in our directory, it ranks #142 of 337 on quality (7.8/10), right around the category average, and it's one of the free-to-use options in the category.
Poolside: Laguna XS 2.1 (free) in depth
Poolside: Laguna XS 2.1 (free), built by Poolside, sits in the chatbots & llms space and is completely free to use. Our editors rate it 7.8 out of 10 based on capability, ecosystem and value. It handles a context window of 262,144 tokens.
On the feature side, Poolside: Laguna XS 2.1 (free) brings 262,144-token context window, reasoning / chain-of-thought and tool / function calling. These are the capabilities that most shape day-to-day use and separate it from thinner alternatives.
Its biggest strength is completely free to use via the openrouter api, while the main trade-off to weigh is that text-only: does not accept image input. Keep both in mind when deciding whether it fits your workflow.
Poolside: Laguna XS 2.1 (free) is most often chosen for research and writing. If that matches your goals, it's a strong candidate to shortlist.
Key features
- ✓262,144-token context window
- ✓Reasoning / chain-of-thought
- ✓Tool / function calling
Pricing
Pros
- +Completely free to use via the OpenRouter API
- +Built-in reasoning (chain-of-thought) mode for harder problems
- +Supports tool / function calling for agent-style workflows
Cons
- −Text-only: does not accept image input
Who should use Poolside: Laguna XS 2.1 (free)
- →Anyone looking for a chatbots & llms tool from Poolside.
- →Teams and individuals focused on research and writing.
- →Users who want to try before they buy — there's a free tier.
- →People who value completely free to use via the openrouter api.
Who should look elsewhere
- →Those for whom text-only: does not accept image input is a dealbreaker.
Best for
10 Best Poolside: Laguna XS 2.1 (free) Alternatives in 2026
Poolside: Laguna XS 2.1 (free) is a strong chatbots & llms tool, but it is not the only option. Whether you are after a lower price, different features or a better fit for your workflow, here are the 10 best alternatives to Poolside: Laguna XS 2.1 (free), ranked and compared.
Anthropic
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OpenAI
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Google DeepMind
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Anthropic
Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and…
Sakana AI
Fugu Ultra is the higher-performance model in Sakana AI's Fugu family. Rather than a single monolithic model, Fugu is a…
~anthropic
This model always redirects to the latest model in the Claude Fable family.
Anthropic
Claude Fable 5 is a Mythos-class model from Anthropic, built for autonomous knowledge work and coding.
Qwen
Qwen3.7-Plus is a cost-effective model in Alibaba's Qwen3.7 series. It supports text and image input with text output…
MiniMax
MiniMax-M3 is a multimodal foundation model from MiniMax. It supports text, image, and video inputs with text output, a…
Anthropic
Fast-mode variant of [Opus 4.8](/anthropic/claude-opus-4.8) - identical capabilities with higher output speed at 2x…
Poolside: Laguna XS 2.1 (free) vs top alternatives
A side-by-side look at how Poolside: Laguna XS 2.1 (free) stacks up against its closest rivals.
| Feature | Poolside: Laguna XS 2.1 (free)Poolside | ClaudeAnthropic | ChatGPTOpenAI | GeminiGoogle DeepMind |
|---|---|---|---|---|
| Quality score | 7.8 / 10 | 9.6 / 10 | 9.5 / 10 | 9.2 / 10 |
| Starting price | Free | $20/mo | $20/mo | $20/mo |
| Free tier | Yes — Free tier available | Yes — Free tier available | Yes — Free tier available | Yes — Free tier available |
| API input price | $0 / 1M tokens | $2 / 1M tokens | $30 / 1M tokens | $1.5 / 1M tokens |
| API output price | $0 / 1M tokens | $10 / 1M tokens | $180 / 1M tokens | $9 / 1M tokens |
| Speed | — | Fast | Fast | Fast |
| Context window | 262,144 tokens | 200K tokens | 128K tokens | 1M-2M tokens |
| Categories | Chatbots & LLMs | Chatbots & LLMs, Coding, Writing | Chatbots & LLMs, Coding, Writing | Chatbots & LLMs, Coding, Writing |
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Frequently asked questions
Q. Is Poolside: Laguna XS 2.1 (free) free?
Yes — Poolside: Laguna XS 2.1 (free) offers a free tier. Paid plans start at Free.
Q. How much does Poolside: Laguna XS 2.1 (free) cost?
Poolside: Laguna XS 2.1 (free) starts at Free. API usage is around $0 per 1M input tokens and $0 per 1M output tokens.
Q. What is Poolside: Laguna XS 2.1 (free) best for?
Poolside: Laguna XS 2.1 (free) is best suited to research and writing, within the chatbots & llms category.
Q. What are the best Poolside: Laguna XS 2.1 (free) alternatives?
Popular alternatives to Poolside: Laguna XS 2.1 (free) include Claude, ChatGPT, Gemini and Anthropic: Claude Sonnet 5. Each trades off price, quality and ecosystem differently.
Q. Is there a free alternative to Poolside: Laguna XS 2.1 (free)?
Yes. Claude, ChatGPT, Gemini offer a free tier, making them good starting points if you want to avoid an upfront subscription.
Q. Why switch from Poolside: Laguna XS 2.1 (free)?
Common reasons include pricing, specific feature gaps (Text-only: does not accept image input), data-privacy requirements, or simply wanting a tool that fits your stack better.
How we rate AI tools
Our quality score weighs capability on real tasks, breadth of features and integrations, pricing and value, and how actively the tool is maintained. Scores are editorial guidance, not benchmarks — always trial a tool on your own workflow before committing. Pricing and features change frequently, so verify current details on the official site.
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