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Comet vs Together AI

A feature-by-feature comparison of Comet and Together AI across 7 capability categories.

First tool

Try Comet (opens in a new tab)

Second tool

Try Together AI (opens in a new tab)

Modalities — Comet Wins

Modalities: Comet compared with Together AI
Feature	Comet	Together AI
Text Input	Yes, requires free plan. The sidecar assistant takes natural-language prompts for search, summaries, and page tasks.	Yes, requires free plan. Serverless inference and playground take chat/completions text.
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.	Unknown. Vision on hosted models was not confirmed on the marketing homepage.
Image Generation	Unknown. Image models exist on Perplexity web for some plans; not documented as a Comet browser feature.	Unknown. Together is inference/GPU cloud. Image model hosting was not on the homepage snippet.
Voice Mode	Unknown. Launch copy mentioned voice on mobile; the current Comet product page does not document a voice loop.	No. Not a conversational voice product.
Video Understanding	Unknown. Perplexity can transcribe attached video on the web app; Comet-specific video understanding is not documented.	No. Not a video-analysis product.
Video Generation	No. Not a video generation product.	No. Not a video generation product.
File Upload (PDF, DOCX)	Unknown. File attach is documented for Perplexity search, not as a Comet browser control.	No. Chat/completions, not a PDF uploader.
Code Execution	Unknown. The marketing site shows the assistant building a webpage in the browser; that is not a documented code sandbox.	Yes, requires plus plan. Code sandboxes are listed on the product page.
Audio Input	Unknown. Audio-file input is not described in Comet setup or privacy help.	Unknown. Speech endpoints were not on the homepage snippet.
Canvas / Artifact Editor	Yes, requires free plan. The assistant sits in a sidecar beside the page you are browsing.	No. Playground, not a canvas.
Screen Sharing / Computer Use	Yes, requires free plan. The assistant is documented acting on the live page (forms, shopping, posting) rather than only summarizing.	No. No computer-use product.

Memory & Context — Together AI Wins

Memory & Context: Comet compared with Together AI
Feature	Comet	Together AI
Persistent Memory	Unknown. Max “Brain” memory is documented for Perplexity Computer, not as a Comet default.	No. Stateless inference. You keep history.
Large Context Window	Unknown. No token window is published for the Comet assistant.	Unknown. Depends on the open model you host. No single Together window on the homepage.
Custom Instructions	Unknown. A global assistant-instruction setting was not found in Comet help.	Yes, requires free plan. System prompts in the API.
Conversation History	Partial. Comet is a full browser with history (cleared in Incognito). Assistant thread history across devices is not documented.	Partial. Playground/console history. The API is stateless.

Integrations — Comet Wins

Integrations: Comet compared with Together AI
Feature	Comet	Together AI
Web Search / Browsing	Yes, requires free plan. Comet is built around Perplexity’s answer engine in the address bar and assistant.	No. Not a search product.
Plugins / Extensions	Yes, requires free plan. Chromium extensions are supported; Incognito disables them unless you turn them back on.	Partial. Endpoints, batch, dedicated clusters. Not a GPT plugin store.
API Access	No. Comet is a browser. Programmatic access is the separate Perplexity API, not a Comet REST product.	Yes, requires free plan. Inference API, fine-tuning, GPU cloud. Usage billing, not a seat.
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.	No. No GPT store.
Real-time Collaboration	Unknown. Shared multiplayer browsing sessions are not documented.	No. No multiplayer chat.
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.	No. Not a cited-search product.

Developer — Together AI Wins

Developer: Comet compared with Together AI
Feature	Comet	Together AI
Function Calling	Yes, requires free plan. The assistant is documented taking multi-step actions (shop, email, fill forms) rather than only answering.	Unknown. Tool use on hosted models was not confirmed on the homepage.
Streaming Responses	Unknown. Token streaming in the sidecar is not called out in Comet help.	Yes, requires plus plan. Serverless inference streams tokens. Research kernels (FlashAttention) are the latency pitch.
Fine-Tuning	No. Comet runs hosted Perplexity/partner models; there is no custom-weight training product.	Yes, requires plus plan. Fine-tuning is a listed product next to inference and GPU cloud.
Embeddings API	No. Not an embeddings API product.	Unknown. An embeddings endpoint was not confirmed on the homepage.
Structured Output (JSON)	Unknown. JSON-schema guarantees are not documented for the Comet assistant.	Unknown. JSON mode was not confirmed on the homepage.
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.	Unknown. You can host reasoning open models. No Together Deep Think toggle.
Local Execution	No. The browser runs locally; model inference stays on Perplexity’s cloud.	No. Cloud GPUs / serverless. Not on your laptop.
Open Weights	No. Comet is not an open-weights model release.	Partial. Inference cloud for open models. Together’s serving stack is not a weight release.
Multi-Agent Orchestration	Partial. Background Assistants (Max) run tasks asynchronously; that is not a general multi-agent SDK.	No. You orchestrate in your app.

Platforms — Comet Wins

Platforms: Comet compared with Together AI
Feature	Comet	Together AI
Web App	No. You download Comet. The marketing site is not a browser-in-the-browser web app.	Yes, requires free plan. together.ai console.
iOS App	Yes, requires free plan. Perplexity launched a Comet iOS app; the product page lists iOS.	No. No iOS app.
Android App	Yes, requires free plan. The product page lists Android alongside desktop.	No. No Android app.
Desktop App	Yes, requires free plan. Standalone Mac and Windows browser; setup help covers install and default-browser.	No. No desktop app.
Chrome Extension	No. Comet is not distributed as a Chrome Web Store extension.	No. No Chrome extension.

Privacy — Tie

Privacy: Comet compared with Together AI
Feature	Comet	Together AI
GDPR Compliant	Unknown. Needs a read of Perplexity’s current DPA before we assert GDPR for Comet.	Unknown. Needs a current DPA read.
Opt Out of Data Training	Unknown. Training opt-out is not documented on the Comet privacy-and-safety article we checked.	Unknown. Training use of prompts was not checked.
Enterprise Privacy Mode	Partial. Comet supports Chrome-like MDM policies (extensions, cookies, data clearing). That is not a published ZDR/SSO suite.	Unknown. Dedicated endpoints exist; enterprise contract terms were not on the homepage.

Workspaces — Tie

Workspaces: Comet compared with Together AI
Feature	Comet	Together AI
Projects / Folders	Unknown. Browser profiles exist; Perplexity Spaces inside Comet were not confirmed.	No. No consumer project product.