Perplexity AI upgrades Pro lineup from Claude Sonnet 5 to Claude Sonnet 5.5
What happened
Between the Sep 28, 2026 and Sep 29, 2026 captures of Perplexity AI's pricing page, Pulse recorded one change: Pro model lineup: Claude Sonnet 5 upgraded to Claude Sonnet 5.5 (Anthropic's fast model). Pulse files it as a product change (feature change) with a neutral direction. Pulse's latest capture (Oct 9, 2026) lists Pro at $17 and Max at $167.
It lands 6 days after Perplexity AI's previous change, "Perplexity AI swaps GPT-5.6 Terra for GPT-6 Sol in multi-model answers" (Sep 23, 2026). Before that Pulse recorded "Perplexity AI bumps Gemini model to 3.8 Flash in AI lineup" (Sep 5, 2026), "Perplexity AI refreshes AI roster: GLM jumps to 5.3, Kimi K3 tagged US-based" (Aug 30, 2026) and "Perplexity AI swaps Gemini 3.1 Pro for Gemini 3.7 Flash in AI model lineup" (Aug 17, 2026). Perplexity AI has been tracked since 2026-06-27.
In the same window fal, Voxel51, Upstage, Together AI and Strawberry also changed their AI & Machine Learning pricing pages. Those moves are listed further down, and the Pulse Agent can compare them side by side.
- Pro · FeatureFeature change
Pro model lineup: Claude Sonnet 5 upgraded to Claude Sonnet 5.5 (Anthropic's fast model)
| Plan | Field | Before | After | Change |
|---|---|---|---|---|
| Pro | Feature | Pro model lineup: Claude Sonnet 5 upgraded to Claude Sonnet 5.5 (Anthropic's fast model) | Feature change | |
Values as written on Perplexity AI's public pricing page in the two captures Pulse compared; where the page states no number, the cells give the wording before and after.
Evidence
The two captures Pulse comparedFull-page captures of Perplexity AI's pricing page (www.perplexity.ai) from Sep 28, 2026 and Sep 29, 2026; the change is marked around the middle of the page.
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Perplexity AI, the last 90 days
Full history- Oct 9, 2026improvedPerplexity AI adds xAI's Grok 4.7 to Pro lineup, drops Anthropic's Claude Haiku 5.5
- Oct 8, 2026improvedPerplexity AI swaps Grok 4.7 for Claude Haiku 5.5 in model lineup
- Sep 30, 2026improvedPerplexity AI swaps GPT-6 Sol for GPT-6.1 Sol in Computer and Pro model lineup
- Sep 29, 2026improvedPerplexity AI upgrades Pro lineup from Claude Sonnet 5 to Claude Sonnet 5.5 · this change
- Sep 23, 2026improvedPerplexity AI swaps GPT-5.6 Terra for GPT-6 Sol in multi-model answers
- Sep 5, 2026improvedPerplexity AI bumps Gemini model to 3.8 Flash in AI lineup
- Aug 30, 2026improvedPerplexity AI refreshes AI roster: GLM jumps to 5.3, Kimi K3 tagged US-based
- Aug 17, 2026improvedPerplexity AI swaps Gemini 3.1 Pro for Gemini 3.7 Flash in AI model lineup
- Aug 11, 2026packagingPerplexity AI: Pro/Max plan copy genericized, memory now called out
- Jul 13, 2026improvedPerplexity AI refreshes AI lineup: Claude Sonnet 5 and GPT-5.6 Terra join Pro plan
Across AI & Machine Learning in the same window
All AI & Machine Learning changes- falOct 19fal doubles Flux 3 Image edit price to $0.048 per megapixel
- Voxel51Oct 19Voxel51 slashes Custom-tier compute hours 71% as it adds free plan
- UpstageOct 19Upstage API deepens Solar Pro 4 promo to 70% off through Oct 19
- Together AIOct 19Together AI lists Muse Spark Open, Reflection Beam, Nemotron 3.5 Super VL
- StrawberryOct 19Strawberry splits pricing into tabs, adds pooled-credit Enterprise plan
Questions about this change
Did Perplexity AI raise prices in September 2026?
No list-price increase was recorded between Sep 28, 2026 and Sep 29, 2026. The change Pulse detected was a product change: feature change.
What changed on Perplexity AI's pricing page between Sep 28, 2026 and Sep 29, 2026?
Pro model lineup: Claude Sonnet 5 upgraded to Claude Sonnet 5.5 (Anthropic's fast model). Pulse compared the captures it took on Sep 28, 2026 and Sep 29, 2026; the before/after table above lists each item as written on the page.
How often does Perplexity AI change its pricing?
Pulse recorded 6 other pricing-page changes for Perplexity AI in the 90 days before this one; the previous change was "Perplexity AI swaps GPT-5.6 Terra for GPT-6 Sol in multi-model answers" on Sep 23, 2026; Perplexity AI has been tracked since 2026-06-27.