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IDES & CODING TOOLS • CURATED • UPDATED SEP 1, 2026

Laguna S 2.1

118B MoE model beats rivals 10x its size on coding benchmarks

Laguna S 2.1 is a 118 billion parameter Mixture-of-Experts model from Poolside AI, released August 2026. Activates only 8 billion parameters per token, supports context windows up to 1 million tokens, runs under permissive OpenMDW-1.1 license. Benchmarks: 70.2% on Terminal-Bench 2.1 (beating DeepSeek-V4-Pro-Max, Nvidia Nemotron 3 Ultra), 78.5% on SWE-Bench Multilingual. Trained in under 9 weeks on 4,096 Nvidia H200 GPUs.

Pricing Free
Platforms local
API No
Open Source Yes
Modalities IDEs & Coding Tools, LLMs
Best For Best for Coding Performance
Date Added 2026-09-01

Benchmark contender: claims to beat models many times its size on two critical coding benchmarks. Open weights under permissive license. Rapid training timeline (9 weeks) suggests efficient engineering. Strong SWE-Bench showing makes it worth evaluating for coding agent workloads.

Download weights from Hugging Face. Use vLLM or llama.cpp with MoE support. Quantize to 4-bit for consumer GPUs using bitsandbytes.

Hugging Face GitHub
Google Antigravity 2.0 Claude Fable 5 NotebookLM Claude Opus 5 GPT-5.6 Sol
Free Completely free
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Compare Laguna S 2.1 with 5+ similar ides & coding tools AI tools.

Q

Is Laguna S 2.1 free?

A

Yes, Laguna S 2.1 is completely free to use.

Q

Does Laguna S 2.1 have an API?

A

No, Laguna S 2.1 does not appear to offer a public API.

Q

What is Laguna S 2.1 best for?

A

Laguna S 2.1 is best for Coding Performance. Laguna S 2. Benchmark contender: claims to beat models many times its size on two critical coding benchmarks. Open weights under permissive license. Rapid training timeline (9 weeks) suggests efficient engineering. Strong SWE-Bench showing makes it worth evaluating for coding agent workloads.

Q

What platforms does Laguna S 2.1 support?

A

Laguna S 2.1 supports local.

Q

Is Laguna S 2.1 open source?

A

Yes, Laguna S 2.1 is open source. You can access the source code on GitHub at https://github.com/poolside-ai/laguna.

Q

How do I get started with Laguna S 2.1?

A

Download weights from Hugging Face. Use vLLM or llama.cpp with MoE support. Quantize to 4-bit for consumer GPUs using bitsandbytes.

Q

How do I use Laguna S 2.1?

A

Laguna S 2.1 is a large language model for text generation, analysis, and conversation. Use through available interfaces. Enter prompts or questions to get responses. It excels at 70.2% on terminal-bench 2.1 (beats larger closed models).

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