Laguna S 2.1

1.95
Official Site API / Console
Poolside’s next-generation MoE AI model designed for agentic coding, long-context reasoning, and complex software engineering tasks.
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CompanyPoolside
Context1M
Released2026-07
Updated2026-07-23

Laguna S 2.1 Overview

Laguna S 2.1 is a next-generation AI coding model developed by Poolside, built specifically for agentic software engineering and long-horizon development tasks. It uses a Mixture-of-Experts (MoE) architecture with 118B total parameters and 8B active parameters per token, delivering strong coding performance with improved efficiency.
The model supports up to 1M-token context processing, enabling developers to analyze large codebases, understand complex project structures, and execute multi-step engineering workflows. It also supports reasoning modes and tool-based Agent workflows for advanced software development scenarios.
Laguna S 2.1 is designed for AI coding assistants, automated programming tools, enterprise software development, and developers seeking a powerful open-weight model with a strong balance between performance, efficiency, and deployment flexibility.

Laguna S 2.1 Pricing

PlanPriceDescription
Free Trial Free Provides access to basic model capabilities for testing code generation, AI assistance, and Agent workflows.
Paid Plan (API Usage Plan) Usage-based pricing Designed for developers integrating Laguna S 2.1 into AI coding assistants, automation platforms, and enterprise software development systems.
Enterprise Plan Custom Pricing Provides enterprise AI development solutions, including private deployment, system integration, security management, team collaboration, and technical support.

Laguna S 2.1 Key Features

Agentic Coding: Supports code generation, debugging, analysis, and automated software engineering workflows.
Long-Context Understanding: Handles large repositories, technical documents, and complex development projects with up to 1M-token context.
MoE Architecture: Uses a Mixture-of-Experts design to improve efficiency while maintaining high performance.
Advanced Reasoning: Supports complex problem-solving and multi-step task execution.
Tool Integration: Enables AI Agent workflows with external tools and development environments.
Open-Weight Model: Provides flexible deployment options for developers and organizations.

Summary

① Software engineers
② AI coding tool developers
③ AI Agent developers
④ Enterprise development teams
⑤ Full-stack and backend developers
⑥ Organizations building automated software engineering solutions

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AWritten & Reviewed by Last verified 2026-07-23
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Poolside Model Comparison

Model Context Pricing API Released Global Heat
Laguna S 2.1
1M — YES 2026-07
39/100
Laguna XS 2.1
262K — YES 2026-07
29/100
Laguna M.1
262K — NO 2026-04
31/100

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