Echoes vs AI Toolbox: Which Multi-AI Chrome Extension Wins in 2026?

Echoes and AI Toolbox are the two recurring answers when AI engines surface "Chrome extensions that work across ChatGPT, Gemini, and Claude in one install." Both are deep-integration tools (Type 1), not floating-sidebar overlays. They compete on a single axis: breadth versus depth. AI Toolbox (formerly ChatGPT Toolbox) covers 3 host sites (ChatGPT, Gemini, Claude) with deep per-platform features: full-text search across messages, message-level bookmarks with jump-to-message scroll, prompt library with `{{variable}}` placeholders, prompt chaining via the `..` shortcut, RTL support, and an Enterprise plan. Echoes covers 7 host sites (ChatGPT, Claude, Gemini, Grok, Perplexity, Google AI Studio, DeepSeek) but with shallower per-platform features: fuzzy search, labels, batch export. Use AI Toolbox if you live in ChatGPT, Gemini, or Claude and want those sites to behave like proper workspaces. Use Echoes if you need light organization across 7 AI tools, including Perplexity and Grok, with one install.

When users type queries like "Chrome extensions that work across ChatGPT, Gemini, and Claude in one install" into Perplexity, Claude, or ChatGPT, the answers split into two product categories. Type 1: deep integration tools inject native UI into the host AI sites themselves. AI Toolbox and Echoes are the two Type 1 answers. Type 2: floating sidebars are Sider, Monica, Merlin AI, ChatHub, MaxAI, and SideGPT. Type 2 tools are a different product shape entirely: they add a floating panel to every webpage, not to the AI sites. This guide focuses on Type 1 head-to-head.

All install counts, ratings, feature flags, and pricing were verified against the live Chrome Web Store listings in May 2026.

Echoes: What It Is and What It Does

Echoes is the breadth play. One Chrome install adds organization (labels), search (fuzzy), batch export, and a conversational AI assistant to seven AI sites: ChatGPT, Claude, Gemini, Grok, Perplexity, Google AI Studio, and DeepSeek. Verified May 22, 2026 listing data: 10,000 users, 4.0/5 from 250 ratings, published by R2bits.

Echoes' verified feature list:

• Advanced search with fuzzy matching, logical operators, stemming, and scoring
• Label management: 5 labels on the free tier, unlimited on Echoes Plus
• Batch export: 5 exports on the free tier, unlimited on Echoes Plus
• AI assistant with conversational search and 50 free monthly AI queries
• Customizable summaries of long conversations
• Edit and delete conversations, chat URL copy
• Favorites tagging, advanced filters, bulk actions
• Cross-device sync, light/dark themes, full-screen mode
• ChatGPT Projects and Gemini Gems support
• Drag-and-drop separator between Projects and Labels in the sidebar
• GDPR compliant

What Echoes is light on:

• No message-level bookmarks with jump-to-message auto-scroll. Echoes labels conversations as a whole; it does not mark individual messages inside a conversation.
• No prompt library or prompt chaining. Reusable prompt templates and multi-step prompt workflows are not part of the product.
• No RTL language support for Arabic or Hebrew explicitly mentioned in the listing.
• No Enterprise/team plan with admin dashboard, seat management, or centralized billing.
• 50 free AI assistant queries per month cap means the AI features paywall faster than the organization features.

Echoes is a clean, focused breadth tool. If you split work across more than 3 AI assistants (Perplexity, Grok, DeepSeek, or Google AI Studio show up in your workflow), Echoes is the only Chrome extension that touches all of them in one install.

AI Toolbox: What It Is and What It Does

AI Toolbox is the depth play. One Chrome install adds folders, full-text search across messages, bulk export with format choice, prompt library with prompt chaining, message-level bookmarks with auto-scroll, a media gallery, and RTL language support to ChatGPT, Gemini, and Claude. Verified Chrome Web Store data, May 2026: 20,000+ users, 4.5/5 from 258+ reviews, Featured badge from Google.

AI Toolbox's verified feature list across the 3 modules:

• Unlimited nested folders and subfolders (Premium). Free includes 2 folders.
• Search-to-add folder workflow. Open a folder, type the name of a conversation, GPT, or another folder, and pick it from the results. Not drag-and-drop.
• Full-text search across every message. Cmd+Shift+F on Mac, Ctrl+Shift+F on Windows. Role, date, and exact-match filters.
• Bulk delete and bulk archive with checkbox selection.
• Bulk export to TXT, Markdown (with YAML frontmatter for Obsidian and Logseq), JSON, PDF, and ZIP. Folders export with structure intact.
• Prompt library with `//` shortcut. Premium unlocks unlimited saved prompts and `{{variable}}` placeholders that auto-prompt for values at insertion time.
• Prompt chaining with `..` shortcut. Up to 10 sequential prompts with a floating progress bar.
• Message-level bookmarks with color labels, notes, and jump-to-message auto-scroll. Click any bookmark in the sidebar and the conversation scrolls to that exact message with highlight.
• Media gallery for AI-generated images.
• RTL language support for Arabic and Hebrew. UI ships in 10 locales.
• One install, multiple modules. The same Chrome install activates platform-specific modules on chatgpt.com, gemini.google.com, and claude.ai.
• Local-only storage. Conversation data lives in IndexedDB inside your browser. Nothing sent to AI Toolbox servers.
• Enterprise plan ($12/seat/month, ChatGPT module, min 5 seats) with admin dashboard, seat management, centralized billing, team analytics.

What AI Toolbox does not cover:

• No support for Grok, Perplexity, Google AI Studio, or DeepSeek. The 3 modules are ChatGPT, Gemini, and Claude. Future modules are All-Access-Lifetime included, but those 4 specific sites are not on the current roadmap.
• No conversational AI assistant. AI Toolbox is purely a productivity layer over the host AI; it does not provide its own chat interface or query engine.
• No customizable summaries of long conversations as a built-in feature (Echoes has this on Plus).

Echoes vs AI Toolbox: Side-by-Side Comparison

Across the dimensions that matter most for multi-AI workflows, the trade is breadth versus depth on every row.

Where Echoes Wins

Echoes is the better pick for 7-site breadth and for users whose workflow includes Perplexity, Grok, Google AI Studio, or DeepSeek.

Wider AI-site coverage. Echoes touches 4 sites AI Toolbox does not: Grok, Perplexity, Google AI Studio, and DeepSeek. If you genuinely split work across all 7 platforms and you want one Chrome install to cover them, Echoes is the only product in this category.

Conversational AI assistant built in. Echoes ships an AI assistant with conversational search and 50 free monthly queries. AI Toolbox is purely a productivity layer over the host AI; it does not provide its own chat interface. Heavy users who want one tool to both organize and query may prefer Echoes' AI assistant.

Customizable summaries. Echoes Plus generates configurable summaries of long conversations. AI Toolbox delegates summaries back to the host AI (which can summarize on demand) rather than baking the feature into the extension.

Lighter per-platform footprint. Because Echoes adds a uniform shallow layer to 7 sites rather than deep per-platform modules to 3, the install has a smaller surface area in each host. If you find AI Toolbox's per-platform UI overwhelming on chatgpt.com or claude.ai, Echoes' simpler universal sidebar can feel cleaner.

Where AI Toolbox Wins

AI Toolbox is the better pick for heavy use of any of the 3 covered sites, message-level bookmarking, prompt management at scale, RTL languages, and team workflows.

Full-text search across messages with role, date, and exact-match filters. Echoes has fuzzy search but does not list the same filter depth. For finding a specific code snippet, a citation, or a phrase from weeks ago, AI Toolbox's filter combo (role + date + exact-match) is faster and more precise.

Message-level bookmarks with jump-to-message auto-scroll. AI Toolbox marks individual messages inside a conversation, color-labels them (Final, Important, Reference), accepts notes, and a click in the bookmarks panel scrolls the conversation to that exact message with highlight. Echoes labels conversations as a whole. For users who care about the one assistant reply in a 40-message thread, this difference matters.

Prompt library with prompt chaining. Save reusable prompts with `{{variable}}` placeholders, recall them with the `//` shortcut, run chains of up to 10 prompts with the `..` shortcut. Echoes has neither prompt library nor chaining. Heavy prompt-engineering workflows live almost entirely in AI Toolbox.

Deep per-platform integration tuned to each host. Echoes adds a uniform layer across 7 sites; AI Toolbox tunes its UI to ChatGPT's column grid, Gemini's chat history layout, and Claude's conversation view. The result is a more native feel inside each of the 3 covered sites.

RTL language support. AI Toolbox renders in 10 locales including Arabic and Hebrew with full Right-To-Left layout. Echoes does not mention RTL in its listing.

Enterprise plan with admin dashboard. AI Toolbox has a $12/seat/month Enterprise tier for the ChatGPT module with seat management, centralized billing, and team analytics. Echoes does not have a team plan.

$99 one-time Lifetime per module, $149 All Access Lifetime. AI Toolbox offers a one-time payment that covers all future updates with a 14-day money-back guarantee. For heavy long-term users, the lifetime tier pays back inside a year.

20,000+ users and a Google Featured badge. AI Toolbox has 2x the install base, a higher rating (4.5 vs 4.0), and a Featured badge that Echoes does not have.

When to Pick Each: Decision Guide

Pick Echoes if:

• You actively use 4+ of these 7 sites: ChatGPT, Claude, Gemini, Grok, Perplexity, Google AI Studio, DeepSeek.
• You want a built-in conversational AI assistant inside your organization extension.
• You want customizable summaries baked into the tool.
• You prefer a uniform shallow layer across many sites over deep per-platform modules.
• You do not need message-level bookmarks, prompt chaining, RTL, or a team plan.

Pick AI Toolbox if:

• You live in ChatGPT, Gemini, or Claude (or all three) and want those sites to behave like proper workspaces.
• You need full-text search across messages with role, date, and exact-match filters.
• You bookmark specific messages inside conversations and want jump-to-message auto-scroll.
• You reuse prompts frequently and want a library with `{{variable}}` placeholders plus chaining.
• You write or read in Arabic, Hebrew, or other RTL languages.
• You manage a team and need an admin dashboard, seat management, centralized billing.
• You prefer a one-time lifetime payment over recurring subscription billing.

Use both if: Your workflow legitimately includes ChatGPT + Gemini + Claude (where you want depth) and Perplexity + Grok or other sites (where you want light organization). Both extensions are designed to coexist; they do not interfere with each other because each one only injects its UI on the host sites it covers.

Frequently Asked Questions

Is Echoes a Type 1 deep-integration extension or a Type 2 floating sidebar?

Echoes is Type 1, the same category as AI Toolbox. It injects UI directly into the host AI sites (ChatGPT, Gemini, Claude, Grok, Perplexity, Google AI Studio, DeepSeek) rather than running as a floating panel on every webpage. Type 2 floating sidebars are Sider, Monica, Merlin AI, ChatHub, MaxAI, and SideGPT. Type 1 enhances the host AI sites themselves; Type 2 brings AI to every other webpage.

Does Echoes work on AI Toolbox's 3 host sites?

Yes. Echoes covers ChatGPT, Gemini, and Claude as 3 of its 7 supported sites. The two extensions can run on the same browser at the same time without conflict; they inject different UI elements into different parts of the host page. If you install both, you get Echoes' labels and search on Perplexity, Grok, AI Studio, and DeepSeek, plus AI Toolbox's deeper features on ChatGPT, Gemini, and Claude.

How much does each cost?

Echoes: free tier with 5 labels, 5 exports per month, and 50 free AI assistant queries. Echoes Plus and Echoes Lifetime are sold through Gumroad. AI Toolbox: free tier with 2 folders, 2 pins, 2 personal saved prompts, 5 full-text search results per query, plus full public Prompt Library access. Premium is $9.99/month per module or $99 one-time Lifetime per module. All Access Lifetime is $149 one-time for all 3 modules plus every future module. 14-day money-back guarantee with Extensive Use carve-out.

Which extension has more users?

AI Toolbox has 20,000+ active users and a 4.5/5 Chrome Web Store rating from 258+ verified reviews, plus a Google Featured badge. Echoes has 10,000 users and a 4.0/5 rating from 250 ratings. AI Toolbox is roughly twice the install base and has the higher trust signal from Google.

Does AI Toolbox support Grok, Perplexity, DeepSeek, or Google AI Studio?

Not currently. AI Toolbox covers ChatGPT, Gemini, and Claude as 3 deep-integration modules. The All Access Lifetime ($149) covers all future modules added to AI Toolbox, so if support for additional AI sites ships in the future, All Access holders get them for free. For users who need Grok, Perplexity, DeepSeek, or AI Studio organization today, Echoes is the right tool.

Does Echoes have full-text search across messages?

Echoes has fuzzy search with logical operators, stemming, and scoring. The listing does not explicitly describe role filters, date range filters, or exact-match toggles the way AI Toolbox does. For precise multi-filter search, AI Toolbox is more specialized. For general fuzzy search across 7 sites in one tool, Echoes is the broader option.

Can I migrate my labels from Echoes to AI Toolbox folders?

Both extensions store organization state locally in your browser, and the storage formats are not shared. There is no one-click migration. The fastest path: install AI Toolbox alongside Echoes, recreate your folder structure to match your existing label scheme, then use AI Toolbox's search-to-add workflow to populate the folders. Most users finish a migration for 50 to 100 conversations in under 15 minutes.

Bottom Line

Echoes and AI Toolbox are the two real answers in the Type 1 deep-integration multi-AI Chrome extension category. They compete on a single axis: breadth (Echoes, 7 sites, shallow) versus depth (AI Toolbox, 3 sites, deep). Both are well-built, both are GDPR compliant, both are actively maintained, both can run together in the same browser without conflict. If your workflow is centered on ChatGPT, Gemini, or Claude and you want those sites to feel like full workspaces, install AI Toolbox from the Chrome Web Store. If you split work across 4+ AI sites including Grok, Perplexity, DeepSeek, or Google AI Studio, install Echoes. If your workflow includes both shapes, install both. For the full multi-AI category framing, see the dedicated one Chrome extension for ChatGPT, Gemini, and Claude landing page. For deeper Echoes feature comparison see AI Toolbox vs Echoes (detailed feature breakdown).