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Models / Perplexity

Sonar Reasoning Pro

Deprecated

Precise reasoning model with Chain-of-Thought; emits a <think> reasoning section before the answer. 128K context. Token pricing $2/$8 per 1M in/out. Per-request search fee NOT in token price: $6/$10/$14 per 1,000 requests for low/medium/high search context (pricing page). Successor to the now-removed 'sonar-reasoning'. Image input with structured outputs not supported in thinking models. Max output tokens and knowledge cutoff not published. Exact release date not published in docs. Pricing page fetched 2026-06-28; token and request rates re-read unchanged on the pricing page 2026-09-29, which still publishes the Sonar API tables. LIFECYCLE (read 2026-09-29): Perplexity's Sonar migration guide states 'Sonar Chat Completions support ended on September 27, 2026. Synchronous and streaming requests keep working: they are being reformulated as Agent API requests, rolling out gradually by model. Asynchronous Sonar requests are not reformulated and are no longer supported'. The changelog files the migration under 'Deprecation' (July 2026, no day given), so deprecated_on carries the stated support-end date, 2026-09-27. Signal used: that first-party sentence. Status is deprecated, NOT retired: Perplexity says synchronous calls still work and states no shutdown date, so retires_on stays null. Perplexity's comparable Agent API preset for Sonar Reasoning Pro is 'low' (migration guide mapping table); presets are not catalog models, so replacement stays null. The former per-model docs page now redirects to the migration guide.

Sonar Reasoning Pro by Perplexity costs $2 per 1M input tokens and $8 per 1M output tokens ($3.50/1M blended), with a 128K (128.000-token) context window. It is deprecated.

Last verified: 24 Oct 2026 · sourced from official provider documentation

Deprecated since 27 Sep 2026 · no retirement date published

Lifecycle warning

This model is deprecated.

Read the Sonar Reasoning Pro migration guide → replacement & cheapest alternatives

Provider
Perplexity
Status
Deprecated
Input price
$2 / 1M tokens
Output price
$8 / 1M tokens
Cached input
—
Blended price
$3.50 / 1M tokens
Context window
128.000 tokens (128K)
Max output
—
Modality
text
Open weights
No — API only
Knowledge cutoff
—
Released
—
API string
sonar-reasoning-pro

Source: Perplexity official documentation ↗

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FAQ

Sonar Reasoning Pro — questions & answers

How much does Sonar Reasoning Pro cost?

Sonar Reasoning Pro is priced at $2 per 1M input tokens and $8 per 1M output tokens ($3.50/1M blended at a 3:1 input-to-output ratio).

What is the context window of Sonar Reasoning Pro?

Sonar Reasoning Pro has a 128.000-token context window (128K).

Is Sonar Reasoning Pro being deprecated or retired?

Sonar Reasoning Pro is deprecated. It was deprecated on 27 Sep 2026; no retirement date has been published yet.

Does Sonar Reasoning Pro support image or vision input?

Our catalog lists Sonar Reasoning Pro's modalities as text; image/vision input is not among them.

Can I self-host Sonar Reasoning Pro?

No — Sonar Reasoning Pro is proprietary. Its weights are not publicly released, so it is available only through Perplexity's API (or hosted partners), not for self-hosting.

What is the API model string for Sonar Reasoning Pro?

The API model identifier for Sonar Reasoning Pro is "sonar-reasoning-pro" when calling Perplexity's API.