Poolside

Laguna S 2.1

poolside/laguna-s-2.1
Model weightsReleased Jul 21, 2026Open Weights
ThinkingToolsopen weights

Laguna S 2.1 is the latest coding agent model from [Poolside](<https://poolside.ai/>). Laguna S 2.1 is a 118B total parameter model with 8B active parameters, scoring 70.2% on Terminal-Bench 2.1 and...

Cost / 1M tokens

Very low usage

$0.09

input

$0.009

cached input

$0.18

output

Context Window

1M

Up to 131K max output

Modalities

text → text

Other tokenizer

Quickstart & API

poolside/laguna-s-2.1
Open the model picker in ChatOSS Desktop (Code, Kanban, or Chat) and select or paste this model ID.

Best for & Strengths

Key Strengths

Open weightsExtended reasoningTool & agent calling1M+ token context

Recommended Workloads in ChatOSS

  • Coding agents
  • Complex reasoning & debugging
  • Open-source AI workflows
Available in ChatOSS Code, Kanban Orchestrate, and Chat modes via Plus, Max, or BYOK.

Active Provider Endpoints (1)

Upstream inference providers serving Laguna S 2.1, with per-provider pricing, context limits, quantization, and 24-hour uptime.

ProviderInput / 1MOutput / 1MCache Read / 1MContextMax OutputQuantizationUptime (24h)
Poolsidecache
poolside/fp4
$0.09$0.18$0.0091M131Kfp4100.0%

Supported API Parameters

Parameters accepted by this model when called through ChatOSS or OpenRouter.

include_reasoningmax_tokensreasoningtemperaturetool_choicetools

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