Ernie Bot vs Perplexity Comet

A side-by-side look at pricing, capabilities, pros, cons, and our editorial scores.

	Ernie Bot Agents	Perplexity Comet Agents
Tagline	Baidu's Mandarin-first ChatGPT rival, powered by the ERNIE model family	An agentic AI browser from Perplexity that reads, reasons over, and acts on the pages you're viewing.
Category	Agents	Agents
Pricing	Freemium· Free tier for Ernie 3.5 access; Ernie 4.0 and premium features require a paid subscription (approximately CNY 59.9/month for individual plans); enterprise API pricing via Baidu AI Cloud Qianfan platform is metered per 1K tokens.	Freemium· Free (as of Oct 2025) / Perplexity Pro $20 per month unlocks higher-tier models and advanced agent features / Perplexity Max and Enterprise tiers available
Model	Baidu ERNIE 4.0 / ERNIE X1 / ERNIE Turbo (in-house)	Routes to Perplexity Sonar plus frontier models (OpenAI GPT, Anthropic Claude, Google Gemini) depending on task and subscription tier
Editorial score	8.7 / 10	—
Use cases	Mandarin content writing and marketing copyChinese-language document Q&A and summarisationBaidu-search-grounded research briefsCustom agents built on the Qianfan platformRetrieval-augmented chat over internal Chinese corporaCode generation and explanation in ChineseImage generation from Chinese promptsCustomer-service chatbots for mainland usersFine-tuning ERNIE models on domain data	Multi-tab research synthesis with citationsAgentic email triage and drafting in GmailAutomated form filling and account signupsCross-site product comparison tablesMeeting scheduling from inbox contextLong-document and PDF summarisationStructured data extraction from web tablesGuided shopping and price comparisonNewsletter and subscription cleanupIn-context follow-up questions about the current page
Pros	Best-in-class Mandarin fluency and Chinese cultural/idiomatic understanding among major LLMs Deep integration with Baidu Search, Wenku, Netdisk and Maps for grounded Chinese-language answers Full agent/plugin platform (Qianfan) with function calling, RAG, and fine-tuning for enterprise developers Multiple model tiers (Ernie 4.0, X1 reasoning, Turbo) covering quality-vs-cost trade-offs Native image generation and document/PDF understanding built into the chat UI Compliant, in-country hosting that satisfies Chinese data-residency and regulatory requirements Very large free tier makes it accessible for individual and small-team experimentation	Agent can actually act on live sites — send email, book, buy, fill forms — not just answer questions about them. Assistant has direct access to the current page and other open tabs, so answers stay grounded in what you're looking at. Chromium-based, so existing extensions, logins, bookmarks and Chrome workflows transfer without friction. Free tier is generous since October 2025; you don't need a Pro sub to try the core agentic browsing experience. Answers are cited back to source URLs, inheriting Perplexity's citation-first UX. Cross-platform: macOS, Windows, Android and iOS all supported.
Cons	Subject to Chinese government censorship; refuses politically sensitive topics and self-censors on sovereignty issues Web app and most documentation are Chinese-only, with a steep onboarding curve for non-Mandarin teams Requires a mainland Chinese phone number for sign-up, which blocks most international users English-language performance and reasoning lag Western frontier models (GPT-4o, Claude, Gemini) Data submitted may be processed under PRC data laws, which is a non-starter for many Western enterprises Ecosystem lock-in to Baidu AI Cloud for serious production use	Security researchers have demonstrated prompt-injection style attacks ('CometJacking') that can exfiltrate data from connected accounts — a real risk when granting the agent Gmail or calendar access. Agent runs on complex sites (checkout flows, dashboards) are still brittle and often need supervision or correction. Best models and longest agent sessions are gated behind Pro ($20/mo) or Max — the free tier throttles the most useful capabilities. Installing a whole new browser is a bigger commitment than a Chrome extension for users who just want an AI sidebar. No public API for the Comet agent itself; automation has to happen inside the browser UI, not via a callable endpoint. Privacy footprint is significant — the assistant sees page contents, tabs and, if authorised, mailbox and calendar data.
Website	yiyan.baidu.com	comet.perplexity.ai

Pick Ernie Bot if

✅ Best-in-class Mandarin fluency and Chinese cultural/idiomatic understanding among major LLMs
✅ Deep integration with Baidu Search, Wenku, Netdisk and Maps for grounded Chinese-language answers
✅ Full agent/plugin platform (Qianfan) with function calling, RAG, and fine-tuning for enterprise developers
✅ Multiple model tiers (Ernie 4.0, X1 reasoning, Turbo) covering quality-vs-cost trade-offs

Pick Perplexity Comet if

✅ Agent can actually act on live sites — send email, book, buy, fill forms — not just answer questions about them.
✅ Assistant has direct access to the current page and other open tabs, so answers stay grounded in what you're looking at.
✅ Chromium-based, so existing extensions, logins, bookmarks and Chrome workflows transfer without friction.
✅ Free tier is generous since October 2025; you don't need a Pro sub to try the core agentic browsing experience.

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