Sonar Reasoning Pro: Specifications & Sources

Specifications and access

Specification	Value and source
Weights	ProprietarySource
Access	APISource
Context window	128,000 tokensSource
Notes	Perplexity additionally charges $6 (low), $10 (medium) or $14 (high context) per 1,000 requests; the Sonar Chat Completions API is replaced by the Agent API on September 27, 2026.Source
Release	2025-02 (Month-only precision; source did not expose an exact day.)Source
API model ID	sonar-reasoning-proSource
Reasoning mode	YesSource

Measurements without matching peer values

These measurements have no matching peer values under the same test conditions. Their original values and sources remain available here.

Search Arena (Show measurement, test conditions, and source)

Source value: 1136
Score: 1136
Metric: rating
Unit: rating
Category: search-preference
Direction: Higher is better
Source type: vendor-reported
Evaluator: Perplexity official API resource
Status: active
Retrieved at: 2026-09-08
Methodology: Vendor-reported result. Sonar-Reasoning-Pro-High; Search Arena; high search mode; human preference; more than 10,000 votes; 2025-03-18 to 2025-04-13
Context: The evaluated label is vendor-published Sonar-Reasoning-Pro-High, not an unqualified bare default snapshot; the current API docs identify sonar-reasoning-pro but do not publish a version mapping.

Source Perplexity official API resource

Our tests

Each test shows the latest attempt, with no subsequent fixes to the generated code. Earlier runs remain available in the test details. These results do not contribute to an overall score.

Pelican on a bicycle

A community classic for free-form SVG drawing.

Sonar Reasoning Pro

Reasoning (requested): high

Current attempt

Run date: 1 Oct 2026
API provider: openrouter
Requested API model: perplexity/sonar-reasoning-pro
API model reported in response: perplexity/sonar-reasoning-pro
Reasoning setting: high
Pinned endpoint: Perplexity | perplexity/sonar-reasoning-pro
Temperature: Provider default
Token limit including reasoning: 8,192 tokens
Test protocol: community-visual-tests-v1
Technical checks: Passed, not a quality rating
Response time: 22.7 s

Visually reviewed. This individual test does not establish overall model quality.

Prompt and test conditions

Generate an SVG of a pelican riding a bicycle

Token limit including reasoning: 8,192 tokens

Task origin (Simon Willison)

Popularity

12.8 / 100

Published prices

API input: $2 per 1M tokensSource
API output: $8 per 1M tokensSource

Sources and data date

Type	Evidence and data date
Price	Base API prices without caching or batch discounts. Higher context tiers and other rates are listed under Costs. Source: Pricing · API pricing
Research status	Research date September 8, 2026. 4 source URLs checked. This documents the inspected sources, not an exhaustive inventory of every publication.
Not found in the inspected sources	parameters-billions Original wording No exact value located in the checked primary model card/API documentation.
Not found in the inspected sources	active-parameters-billions Original wording No exact value located in the checked primary model card/API documentation.
Not found in the inspected sources	knowledge-cutoff Original wording No exact value located in the checked primary model card/API documentation.
Not found in the inspected sources	profile-benchmarks-additional Original wording No additional exact sonar-reasoning-pro benchmark rows were published in the checked current API model page.
Unresolved	AA benchmark rows Original wording No exact Artificial Analysis model page located in the checked public sitemap.
Additional source	Model metadata (retrieved September 8, 2026) · Perplexity Sonar Reasoning Pro documentation · Editorial description reviewed October 2, 2026
Additional source	Perplexity official API resource (retrieved September 8, 2026)
Additional source	Perplexity migration from Sonar to Agent API · Editorial description reviewed October 2, 2026
Additional source	OpenRouter: Popularity index (derived), CC BY 4.0
Additional source	Vercel AI Gateway: Popularity index (derived), CC BY 4.0
Additional source	Creative Commons Attribution 4.0