Laguna S 2.1
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...
Updated 5 h ago · first seen 11 Sept 2026
model_01M294WVT2TADYBJSZM7Z486SH
Overview
Identity
Identity block not returned by the API for this entity.
Openness
Openness not classified yet — no sourced evidence to place this model in the ontology.
Key facts
- Release date
Source:OpenRouter public model & pricing listingT2observed 12 h agomedium
- Openrouter id
Source:OpenRouter public model & pricing listingT2observed 12 h agomedium
Architecture
- Hugging Face repo
Source:OpenRouter public model & pricing listingT2observed 12 h agomedium
Capabilities
Modalities
- Modalities
- text
- Input
- text
- Output
- text
Capabilities
Tool calling
Yes
OpenRouter public model & pricing listing · T2
Structured output
No
OpenRouter public model & pricing listing · T2
Reasoning
Yes
OpenRouter public model & pricing listing · T2
Vision
Unavailable
Audio
Unavailable
Fine-tuning available
Unavailable
- Context window
Source:OpenRouter public model & pricing listingT2observed 12 h agomedium
- Max output
Source:OpenRouter public model & pricing listingT2observed 12 h agomedium
Providers & Pricing2
All offers in the price terminal →USD per 1M tokens as published by each provider (USD). Rows are append-only: every change is kept in the history below.
Price history
Output price · USD / 1M tokens 1 provider
- OpenRouter
- OpenRouter$0.18 → $011 Sept 2026
- OpenRouterfirst observed $0.1811 Sept 2026
Input price · USD / 1M tokens 1 provider
- OpenRouter
- OpenRouter$0.09 → $011 Sept 2026
- OpenRouterfirst observed $0.0911 Sept 2026
Timeline3
Full timeline →OpenRouter lists Laguna S 2.1 at $0 in / $0 out per 1M tokens
openrouterOpenRouter lists Laguna S 2.1 at $0.09 in / $0.18 out per 1M tokens
openrouter
Change history13
Viewing AI Atlas as of 12 Sept 2026 — attributes exactly as the atlas knew them on that day; later corrections are not shown.
Back to today →Attributes as of 12 Sept 2026 16 claims in force
- Release date
- 21 Jul 2026
- Openness
- open-weights
- Context window
- 1.05M tokens
- Max output
- 131.1K tokens
- Modalities
- text
- Input modalities
- text
- Output modalities
- text
- Hugging Face repo
- poolside/Laguna-S-2.1
- Openrouter id
- poolside/laguna-s-2.1
- Openrouter listed at
- 21 Jul 2026
- Reasoning
- Yes
- Structured output
- No
- Supported parameters
- include_reasoning, max_tokens, reasoning, temperature, tool_choice, tools
- Tool calling
- Yes
- Weights available
- Yes
Release daterelease_date1
Context windowcontext_length1
Max outputmax_output_tokens1
Modalitiesmodalities1
Input modalitiesmodalities_input1
Output modalitiesmodalities_output1
Hugging Face repohf_repo1
Descriptiondescription1
Openrouter idopenrouter_id1
Reasoningreasoning1
Structured outputstructured_output1
Supported parameterssupported_parameters1
Tool callingtool_calling1
Claims are temporal and append-only: a new observation closes the previous claim (valid_to) instead of overwriting it. Conflicting claims from different sources are kept side by side and flagged — never averaged. Methodology →
Provenance
Attributed facts
14
Source tiers
T214
Freshest observation
5 h ago
Conflicts
None
Source documents 1
Tier 1 = official/primary, 2 = quality secondary, 3 = community, 4 = unverified. Every snapshot is archived; see all sources and the methodology.
Data quality (50/100) measures how well AI Atlas knows this entity — completeness, primary-source ratio, freshness, conflicts — never how good the model is. Methodology →