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Head-to-head comparison

Sonar vs Laguna S 2.1

Sonar (Perplexity) and Laguna S 2.1 (Poolside) compared on the ModelCap Index, API price, context window, provider availability, weight access and every public benchmark board they share. Figures are the same ones shown on the live rankings; nothing here is a hidden score.

Snapshot as of 18 August 2026

As of 18 August 2026, Laguna S 2.1 holds the stronger ModelCap Index position (#155 vs #196); Laguna S 2.1 is 5.6× cheaper per output token ($0.18/1M vs $1.00/1M); and Laguna S 2.1 offers the longer context window (1M vs 127K tokens).

Which should you choose?

Choose Sonar if…

  • ModelCap publishes no field on which Sonar leads Laguna S 2.1 for this pair.

Choose Laguna S 2.1 if…

  • you want the stronger overall ModelCap Index position — #155 against #196 (21.4 vs 9.6 points).
  • API cost matters — $0.18/1M output tokens against $1.00/1M, about 5.6× cheaper.
  • your workload is prompt-heavy — input tokens cost $0.09/1M against $1.00/1M.
  • you need the longer context window — 1M tokens against 127K.
  • you want the more recently listed model — Laguna S 2.1 was listed 21 July 2026, Sonar 27 January 2025.

Sonar vs Laguna S 2.1: specs, pricing and context

Specification comparison of Sonar and Laguna S 2.1
FieldSonarPerplexityLaguna S 2.1Poolside
ModelCap Index position#196#155
Index score9.621.4
EvidenceMeasuredEstimated
Input price / 1M tokens$1.00$0.09
Output price / 1M tokens$1.00$0.18
Context window127K tokens1M tokens
Max output tokens—131K
API providers listed11
Weight accessAPI onlyRestricted license
Input modalitiesText, ImageText
First listed27 January 202521 July 2026
PublisherPerplexityPoolside

Evidence: 1 public benchmark observation across 1 board · global corpus prior · leave-one-anchor-out calibrated. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: Sonar vs Laguna S 2.1

Public benchmark boards where Sonar or Laguna S 2.1 has a published result
BoardSonarLaguna S 2.1Leads
Artificial Analysis Intelligence IndexArtificial Analysis9.4intelligence-index—Only one result

Scores are the sources' own published figures for each model's best evaluated configuration; ModelCap never re-runs a benchmark.

Want a different pairing? Open the interactive comparison tool to swap either model for any current ranked language model.

Sonar vs Laguna S 2.1: common questions

Is Sonar better than Laguna S 2.1?

Laguna S 2.1 ranks higher on the ModelCap Index as of 18 August 2026: #155 against #196. That is a capability ranking built from public benchmark evidence with published uncertainty; whether it is "better" for you also depends on price, context and where you can run it.

Is Sonar cheaper than Laguna S 2.1?

Laguna S 2.1 is cheaper on output tokens: $0.18/1M against $1.00/1M. Input tokens are $1.00/1M for Sonar and $0.09/1M for Laguna S 2.1. Prices are the lowest listed API offer ModelCap observed, in USD per million tokens.

Which has the bigger context window, Sonar or Laguna S 2.1?

Laguna S 2.1 has the larger context window: 1M tokens against 127K.

Which is better for coding, Sonar or Laguna S 2.1?

The two models do not share a coding benchmark board on ModelCap yet, so no head-to-head coding score is published; the ModelCap Index position is the closest overall signal.

Are Sonar and Laguna S 2.1 open-weight models?

Sonar: API only. Laguna S 2.1: Restricted license. Open weights mean the checkpoint can be downloaded and self-hosted under its licence; API-only models are available solely through hosted endpoints.

Where can I run Sonar and Laguna S 2.1?

ModelCap currently lists 1 API provider for Sonar and 1 for Laguna S 2.1, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this Sonar vs Laguna S 2.1 comparison?

Every figure comes from the sealed ModelCap dataset published 18 August 2026; the page re-renders within a minute of each data refresh, and the ModelCap Index positions are the same ones shown on the live rankings.

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