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Comet vs Azure OpenAI Service

A feature-by-feature comparison of Comet and Azure OpenAI Service across 7 capability categories.

First tool

Try Comet (opens in a new tab)

Second tool

Try Azure OpenAI Service (opens in a new tab)

Modalities — Azure OpenAI Service Wins

Modalities: Comet compared with Azure OpenAI Service
Feature	Comet	Azure OpenAI Service
Text Input	Yes, requires free plan. The sidecar assistant takes natural-language prompts for search, summaries, and page tasks.	Yes, requires plus plan. Chat Completions and Responses APIs on deployed OpenAI models.
Image Upload / Vision	Unknown. Vision on the current page is plausible for an in-browser agent, but Comet help does not spell out image attach.	Yes, requires plus plan. GPT-4o and later chat models on Azure accept text and images.
Image Generation	Unknown. Image models exist on Perplexity web for some plans; not documented as a Comet browser feature.	Yes, requires plus plan. Azure OpenAI lists image generation models in the Foundry catalog.
Voice Mode	Unknown. Launch copy mentioned voice on mobile; the current Comet product page does not document a voice loop.	Partial. GPT-4o audio models support speech-in/speech-out; that is an API capability, not a consumer voice app.
Video Understanding	Unknown. Perplexity can transcribe attached video on the web app; Comet-specific video understanding is not documented.	Unknown. Video understanding vs Sora video generation was not separated in the catalog page we read.
Video Generation	No. Not a video generation product.	Yes, requires plus plan. Azure OpenAI catalog includes Sora and a video generation model.
File Upload (PDF, DOCX)	Unknown. File attach is documented for Perplexity search, not as a Comet browser control.	Yes, requires plus plan. Files API and Assistants/vector store accept uploaded customer data.
Code Execution	Unknown. The marketing site shows the assistant building a webpage in the browser; that is not a documented code sandbox.	Unknown. Code interpreter on Azure OpenAI was not verified on the catalog page.
Audio Input	Unknown. Audio-file input is not described in Comet setup or privacy help.	Yes, requires plus plan. Audio models cover speech-to-text and GPT-4o audio input.
Canvas / Artifact Editor	Yes, requires free plan. The assistant sits in a sidecar beside the page you are browsing.	No. Not a ChatGPT Canvas product. Playgrounds are for testing API calls.
Screen Sharing / Computer Use	Yes, requires free plan. The assistant is documented acting on the live page (forms, shopping, posting) rather than only summarizing.	Partial. computer-use-preview is listed for the Responses API computer-use tool. That is not a consumer screen-share chat.

Memory & Context — Azure OpenAI Service Wins

Memory & Context: Comet compared with Azure OpenAI Service
Feature	Comet	Azure OpenAI Service
Persistent Memory	Unknown. Max “Brain” memory is documented for Perplexity Computer, not as a Comet default.	Partial. Responses API and Assistants threads persist message history when you enable those features; models are otherwise stateless.
Large Context Window	Unknown. No token window is published for the Comet assistant.	Yes, requires plus plan. Depends on the deployed model; gpt-chat-latest lists a 400k context window.
Custom Instructions	Unknown. A global assistant-instruction setting was not found in Comet help.	Partial. System prompts are API parameters, not a ChatGPT-style global custom-instructions UI.
Conversation History	Partial. Comet is a full browser with history (cleared in Incognito). Assistant thread history across devices is not documented.	Partial. Optional Responses API / Assistants threads store history in your resource; chat completions are otherwise stateless.

Integrations — Comet Wins

Integrations: Comet compared with Azure OpenAI Service
Feature	Comet	Azure OpenAI Service
Web Search / Browsing	Yes, requires free plan. Comet is built around Perplexity’s answer engine in the address bar and assistant.	Unknown. Grounding/search on Azure OpenAI was not checked. Distinct from Copilot.
Plugins / Extensions	Yes, requires free plan. Chromium extensions are supported; Incognito disables them unless you turn them back on.	Partial. Functions and tools are documented; there is no ChatGPT plugin store.
API Access	No. Comet is a browser. Programmatic access is the separate Perplexity API, not a Comet REST product.	Yes, requires plus plan. REST API for deployed models in your Azure resource. Usage billing.
Zapier Integration	Unknown. No first-party Comet Zapier app was checked.	Unknown. No first-party Zapier listing was checked.
Custom GPTs / Bots	Partial. Email Assistant and Background Assistants are Max-tier agents, not a public custom-GPT store.	Partial. Assistants / Agents APIs let you build assistants; there is no public Custom GPT store.
Real-time Collaboration	Unknown. Shared multiplayer browsing sessions are not documented.	Unknown. Team sharing in Azure AI was not checked.
Live Social Data Integration	No. Not a live social-firehose product; it can browse social sites like any browser.	No. No live social firehose.
Live Citation Mapping	Partial. Comet uses Perplexity’s answer engine, which cites sources on perplexity.ai; Comet help does not separately document citation UI in the sidecar.	Unknown. Grounding citations on Azure were not checked.

Developer — Azure OpenAI Service Wins

Developer: Comet compared with Azure OpenAI Service
Feature	Comet	Azure OpenAI Service
Function Calling	Yes, requires free plan. The assistant is documented taking multi-step actions (shop, email, fill forms) rather than only answering.	Yes, requires plus plan. Functions, tools, and parallel tool calling are listed on Azure OpenAI chat models.
Streaming Responses	Unknown. Token streaming in the sidecar is not called out in Comet help.	Yes, requires plus plan. Chat Completions and Responses APIs stream tokens; the service is documented as processing prompts via those APIs.
Fine-Tuning	No. Comet runs hosted Perplexity/partner models; there is no custom-weight training product.	Yes, requires plus plan. Customers can upload training data to create a fine-tuned model exclusive to their resource.
Embeddings API	No. Not an embeddings API product.	Yes, requires plus plan. Embedding models convert text to vectors in the Azure OpenAI catalog.
Structured Output (JSON)	Unknown. JSON-schema guarantees are not documented for the Comet assistant.	Yes, requires plus plan. Structured outputs are listed on gpt-chat-latest and other Azure OpenAI chat models.
Reasoning / Thinking Mode	Partial. Max Assistant on Comet is documented as a slower, routed reasoning mode for Max subscribers, not a free Deep Think toggle.	Yes, requires plus plan. o-series and later chat models list reasoning; some models expose a configurable reasoning effort.
Local Execution	No. The browser runs locally; model inference stays on Perplexity’s cloud.	No. Cloud-hosted in your Azure region.
Open Weights	No. Comet is not an open-weights model release.	No. Hosts OpenAI proprietary models, not open-weight releases.
Multi-Agent Orchestration	Partial. Background Assistants (Max) run tasks asynchronously; that is not a general multi-agent SDK.	Partial. GPT-5.6 series lists multi-agent orchestration as preview on Azure.

Platforms — Comet Wins

Platforms: Comet compared with Azure OpenAI Service
Feature	Comet	Azure OpenAI Service
Web App	No. You download Comet. The marketing site is not a browser-in-the-browser web app.	Yes, requires plus plan. Azure AI Foundry / portal for deploying and testing models.
iOS App	Yes, requires free plan. Perplexity launched a Comet iOS app; the product page lists iOS.	No. No consumer iOS app. Distinct from Copilot mobile.
Android App	Yes, requires free plan. The product page lists Android alongside desktop.	No. No consumer Android app.
Desktop App	Yes, requires free plan. Standalone Mac and Windows browser; setup help covers install and default-browser.	No. Portal and API. No branded consumer chat desktop app.
Chrome Extension	No. Comet is not distributed as a Chrome Web Store extension.	No. Not a browser extension. Do not conflate with Copilot.

Privacy — Azure OpenAI Service Wins

Privacy: Comet compared with Azure OpenAI Service
Feature	Comet	Azure OpenAI Service
GDPR Compliant	Unknown. Needs a read of Perplexity’s current DPA before we assert GDPR for Comet.	Yes, requires plus plan. Azure OpenAI is an Azure service under the Microsoft Products and Services DPA; Trust Center documents GDPR for Azure.
Opt Out of Data Training	Unknown. Training opt-out is not documented on the Comet privacy-and-safety article we checked.	Yes, requires plus plan. Prompts, completions, embeddings, and training data are not used to train foundation models without customer permission.
Enterprise Privacy Mode	Partial. Comet supports Chrome-like MDM policies (extensions, cookies, data clearing). That is not a published ZDR/SSO suite.	Yes, requires enterprise plan. Private VNet, customer-managed keys, and Microsoft enterprise agreements.

Workspaces — Azure OpenAI Service Wins

Workspaces: Comet compared with Azure OpenAI Service
Feature	Comet	Azure OpenAI Service
Projects / Folders	Unknown. Browser profiles exist; Perplexity Spaces inside Comet were not confirmed.	Yes, requires plus plan. Microsoft Foundry organizes work into projects and resources in the Azure tenant.